Accessories

The DT-5.2 is engineered and built to accurately face front or rear disc brake mounts so they are precisely aligned to the rotor. - Faces any IS Mount, Post Mount, or new Shimano Flat Mount, including low clearance, chainstay mounts - Telescoping axle adaptors allow use with any configuration of open or thru-axle dropouts and dropout widths (including Boost 110, Boost 148 and all fat bike axles) - Includes two facing cutters: IS Mounts Post and Flat Mounts - Includes storage case

Park Tool's Deluxe Home Mechanic Repair Stand is a heavy-duty folding stand with your choice of shop quality clamps. Perfect for heavier duty home use or portable shop use, the PCS-4 features a rock-solid, four-point leg system that folds together for storage, steel powder-coated tubing, and a composite horizontal tube. • PCS-4-1 uses the 100-5C Adjustable Linkage Clamp. • Clamp rotates 360º and is adjustable in height up to 67” (170cm) • Adjusts quickly from 55" to 72" • Approximate weight 26 lbs (11.8 kg) NOTE: The maximum weight holding capacity of the PCS-4 is 45 kg (100 lb.). However, this assumes the weight is centered over the legs.

1/4" Ratcheting Reversible Click-Type Micrometer Torque Wrench with Bit Set and Custom Tool Roll Pedro's Demi Torque Wrench II is designed for left-hand or right-hand thread 3-15Nm torque settings required for critical components such as handlebars, stems, and controls. The new design features an integrated bit holder for storage of 8 bits on the wrench for convenience and versatility and the small overall size and low-profile head are perfect for tight spaces and easy handling. The Demi Torque Wrench II is quickly set using a micrometer-style dial and a simple locking mechanism. Accurate to within +/- 4 percent. Backed by Pedro's two-year warranty. - Integrated bit holder for storage of 8 bits on the wrench - Square 1/4" reversible ratcheting drive designed for left-hand or right-hand thread 3-15Nm torque settings - Small overall size and low-profile head perfect for tight spaces and easy handling. - Includes custom tool roll for wrench and bit storage. Included bits and adapters: - Hex: 2.5, 3, 4, 5, 6, (25mm), 4 & 5mm (50mm) - Torx: T10, T15, T20, T25, & T30 (25mm), T25 (50mm) - Crowfoot: 7 & 8mm Flare - WrenchDrive Adapter: 1/4" square to 1/4" hex

Your tires are the only thing connecting you to the road or trail, and having optimal tire pressure can have more impact on ride comfort than both frame and wheel choice combined. But finding the right tire pressure requires trial and error. TyreWiz for Moto is the first-of-its-kind tire pressure sensor for Zipp 3Zero Moto wheels and takes the guesswork out of finding that optimal tire pressure. Lightweight and durable, TyreWiz adds only 10 grams to your tires. With an IPX7 waterproof and dustproof rating, you can confidently ride on any type of trail and know that your tire pressure sensor will keep going strong. TyreWiz reports data with +/-2% accuracy at a resolution of .1 PSI; vastly more accurate than any tire pump on the market. TyreWiz monitors the air pressure in real-time and relays the data to a cycling computer or a smartphone. That information is relayed to the SRAM AXS app and delivers personalized recommendations and pressure alerts. TyreWiz gives riders access to highly accurate, real-time tire pressure data to make decisions that can affect rolling resistance, traction, tire wear, and rider comfort. Features - Data reported with +/- 2% accuracy at .1 PSI resolution. - Only compatible with Zipp 3ZERO Moto wheels. - Inexpensive, user-replaceable CR1632 battery lasts for 300 hours. - IPX7 dustproof/waterproof rating.

ShockWiz is a suspension tuning system for air-sprung mountain bikes that combines high-tech hardware with an intuitive smartphone app. It's lightweight, durable and powered by a long-lasting coin cell battery, ShockWiz automatically records and evaluates suspension performance every time you ride. The ShockWiz app displays straightforward adjustments that unite bike, terrain and riding style. ShockWiz works for all mountain bike riders, regardless of their experience or bike's intended use. It works on hardtail and dual suspension bikes, and for all levels of skill, speed, and terrain. With ShockWiz, you know exactly how your suspension is performing – and how to make it better. Features & Benefits: - Automated tuning recommendations - Shock tuning score - a snapshot of how well your suspension is set up for you - Works on hardtail and dual suspension bikes. Works for Cross-Country, Trail, All Mountain and Downhill. - Inexpensive, replaceable CR2032 battery lasts for months - Waterproof and dustproof - IP67 rating - Two alternative hoses (included) offer a range of fitting options - Smartphone app is compatible with Apple and Android phones Essential Details: - ShockWiz is designed for all mountain bike riders, regardless of your experience or bike's intended use. - You can tune for every riding style: Efficient (pedaling), Balanced, Playful or Aggressive. - Advice for air pressure, spring rate, compression and rebound is displayed in the intuitive smartphone app. - In the box: ShockWiz hardware, two hoses, rubber mounting boot and zip ties.

Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The DFour DUB was designed specifically for Dura-Ace R9100 chainrings. Train using a Quarq power meter without changing your drivetrain. You are working hard, pushing yourself to new heights in some of the toughest conditions. Ride with confidence knowing that your power meter will not quit when you need it the most. Enjoy up to 200 hours of ride time in any weather condition with its IPX7 waterproof rating and 10k temperature compensation; if harsh climates do not hold you back, then you need a product capable of rising to the occasion. That is exactly what the DFour DUB power meter is made for. Train harder, ride faster, and unlock your ultimate potential. The DFour DUB power meter brings simplicity and ease-of-use to your training. With MagicZero automatic calibration, there is no need to worry about calibrating before you ride; just jump on your bike and go. DFour DUB features Bluetooth low-energy and ANT+ wireless data transfer, delivering power output information directly to your cycling computer. Features - Bluetooth low-energy technology and ANT+ wireless data transfer - MagicZero - automatically checks and recalibrates your power meter as you ride – no need to manually calibrate - AxCad - no cadence magnet required - 10K Temperature Compensation - Battery - CR2032, 200-hour battery life, change without tools - OmniCal - swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy - within 1.5%, measuring both legs

Reach new goals and explore new roads with a power meter that delivers on accuracy, durability, and reliability. The DFour DUB was designed specifically for Dura-Ace R9100 chainrings. Train using a Quarq power meter without changing your drivetrain. You are working hard, pushing yourself to new heights in some of the toughest conditions. Ride with confidence knowing that your power meter will not quit when you need it the most. Enjoy up to 200 hours of ride time in any weather condition with its IPX7 waterproof rating and 10k temperature compensation; if harsh climates do not hold you back, then you need a product capable of rising to the occasion. That is exactly what the DFour DUB power meter is made for. Train harder, ride faster, and unlock your ultimate potential. The DFour DUB power meter brings simplicity and ease-of-use to your training. With MagicZero automatic calibration, there is no need to worry about calibrating before you ride; just jump on your bike and go. DFour DUB features Bluetooth low energy and ANT+ wireless data transfer, delivering power output information directly to your cycling computer. Features - Bluetooth low-energy technology and ANT+ wireless data transfer - MagicZero - automatically checks and recalibrates your power meter as you ride – no need to manually calibrate - AxCad - no cadence magnet required - 10K Temperature Compensation - Battery - CR2032, 200-hour battery life, change without tools - OmniCal - swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy - within 1.5%, measuring both legs

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It's invisible technology that adds minimal weight and will help you get to the finish line faster, and it can be used to upgrade any eTap AXS bike. - An elegant, integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Simple and affordable power meter upgrade option - Right Arm/BB/Spider/Chainrings NOT INCLUDED

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It's invisible technology that adds minimal weight and will help you get to the finish line faster, and it can be used to upgrade any eTap AXS bike. - An elegant, integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Simple and affordable power meter upgrade option - Right Arm/BB/Spider/Chainrings NOT INCLUDED

The X0 Eagle T-Type AXS™ Wide left crankarm with Power Meter spindle provides riders with accurate, live power data delivery housed in our most advanced aluminum crankset. The power meter technology is integrated through what SRAM calls “DUB-PWR” – a unique design that elegantly houses Quarq’s reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left-side power to calculate total watts, it’s subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS™ enabled components. No-compromise, no-fuss data delivery with robustness in mind. - Innovative "DUB-PWR" design allows for lightweight, subtle Quarq power integration - Compatible with RockShox Flight Attendant - Unique, groundbreaking design integrated with one of the lightest aluminum cranksets on the market - +/-3% accuracy means you'll always know your true watts output - Long battery life provides 400+ hours of usage - Waterproof (IPX7 waterproof to 1 meter for 30 minutes - Right arm, Bottom bracket, Chainring and Spider NOT included

Power measurement is a crucial part of training, so we’ve made it as easy as possible to upgrade your Force AXS ride with Quarq technology. DUB-PWR takes the legendary reliability and accuracy of Quarq technology and inserts it into the crank spindle for clean integration that fits more bikes than ever. It’s invisible technology that adds minimal weight and will help you get to the finish line faster. FEATURES - DUB-PWR spindle-based unit measures left side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User replaceable AAA lithium battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset)

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. - An elegant, integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Wide chainline crankset for bikes with the widest gravel tires

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. - An elegant,integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - BB not included

Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. - An elegant,integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Wide chainline crankset for bikes with up to 700x45c or 27.5x2.1" tire widths (43/30T chainrings only) - BB not included

- AXS enabled for easy monitoring and firmware upgrades - Bluetooth Low Energy and ANT+ compatible - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - Uses a common CR2032 battery that last for 200 riding hours and changes without tools - Power-upgrade compatible with the following RED and Force eTap AXS cranksets: RED 1x: 36T-46T, Force 1x: 36T-46T, Force 2x: 33/46, 35/48 - Bolt Circle Diameter (BCD): 107 BCD - Power Meter Type: ANT USB

Stick to your fitness plan year round with the help of the Saris Mag+ trainer. It is the perfect way to keep your legs warm when it's cold, dry when it's wet, and safe when it's too dark to ride outside. With this turbo trainer, it's easy to turn your bike into your go-to calorie burner — no matter the season. Simply attach the handlebar-mounted shifter to change resistance during your workout without having to leave your bike. Want to train with Zwift or Rouvy? All you need is a speed sensor. Visit our setup guide to learn how to get started. - Magnetic resistance unit provides a quiet and frictionless ride. - Linear resistance boosts workout intensity to match each pedal stroke and gear click. - Mag+ comes with convenient, adjustable handlebar-mounted shifter. - Compatible with Zwift and other indoor cycling apps

Better health. Faster splits. More me-time. Whatever your goals may be, the Fluid2 helps you get the most out of each indoor training ride. The large, precision-balanced flywheel (with patented fan design) lets you easily customize each ride simply by shifting gears, just as you would outside. This design also helps keep your Fluid2 working better – longer. And, thanks to our built-to-last manufacturing process, the Fluid2 can help you conquer one goal after the next. - Fluid resistance unit provides a quiet and consistent ride. - Progressive resistance offers the widest resistance range and road-like feel. - Best-selling trainer in the USA - Compatible with Zwift and other indoor cycling apps

A Killer Training Combo What happens when you pair a speed sensor with the #1 selling bike trainer in the USA? You get a combo that’s ready for any virtual—or non-virtual—training ride. It’s the ideal setup for budget-conscious athletes looking to join fun, virtual communities, like Rouvy and Zwift, without a traditional smart trainer. Simply install the magnetless speed sensor on the rear wheel of your bike, mount your bike to the solid Fluid2 trainer with our innovative club knob, connect to your virtual training app of choice via Bluetooth or ANT+, and voilà! - you’re ready to sweat. Product Features - Fluid resistance unit provides a quiet and consistent ride. - Progressive resistance offers the widest resistance range and road-like feel. - Included speed sensor connects you with Rouvy, Zwift and other indoor cycling apps. - ANT+ USB and BlueGiga USB sold separately. - Includes one month subscription to Rouvy virtual training app In the box: - Fluid² Smart Equipped Bike Trainer - Dual-band magnetless speed sensor - Fluid² is the best-selling trainer in the USA. - Fluid resistance unit creates optimal road-like feel. - Fluid resistance unit provides a quiet and consistent ride. - Noise level at 20 mph is super quiet 64-68 decibels. - Large, individually precision-balanced flywheel allows for improved road-like feel. - Self-cooling mechanisms including a patented fan design keeps the unit performing better, longer. - Eccentric leveling feet allow for easy adjustment on uneven surfaces. - Comes on the foldable Classic frame with spring loaded, bolt-action lever. - Precision-machined alloy roller reduces tire wear and slippage. - Features clutch knob for perfect roller-to-tire tension each ride. - 2" resistance unit roller allows for 650b, 700c, 26", 27" and 29" wheel sizes – up to a 2.0 tire. - This trainer is designed to fit common road and mountain bike frames with included steel quick release skewer and has three settings for rear dropout spacing: 120mm, 130mm and 135mm. - Trainer tire recommended. - Compatible with indoor cycling apps. - Trainer is tested to the combined weight (rider and bike) of 300 lbs. - Optional thru-axle adapter available for 142x12mm and 148x12mm bikes. - ANT+ USB and BlueGiga USB sold separately. - Formerly branded as CycleOps Fluid² Smart Equipped

Trainer Mission Control Every training room needs a control center, and the TD1 is more than equipped for the job. Featuring built-in power strip with 2 AC and 2 USB outlets, this indoor trainer desk was designed to keep everything you need charged, organized and close at hand. Its roomy 12" x 20" table top is made from laminated birch for easy clean up, and is supported by stainless, corrosion-resistant steel sourced from America’s heartland. And as part of the Saris trainer eco-system, the TD1 is a perfect complement to the MP1 trainer platform. After just one ride with a dedicated trainer desk, you’ll ask yourself how you ever rode indoors without one. - Stay Charged: built-in power strip keeps training necessities nearby and powered up. - Pick Your Height: adjustable for wide range of bikes and training configurations. - Easy Cleaning: laminated birch wood top makes for easy clean-up post-ride. - Steamlined Look: built-in cable management and stainless steel hardware are both functional and eye-pleasing. - Enhanced Experience: a great addition to indoor training. Specs - Base: 13-inches wide x 36-inches Depth - Desk Top: : 12-inches Width x 20-inches Depth - Adjustable Desk Height from Floor: 40- to 55-inches - Materials: Laminated birch table top supported by a steel frame, featuring stainless steel and corrosion-resistant hardware - Cord Length: 6- foot AC cord - Built-in power strip with 2 AC and 2 USB outlets - Built-in cord retention clips for easy cable management and a clean look.

Whether you want to attend a group ride in Zwift, climb the Dolomites in Rouvy, or simply need a sweat session, the M2 smart trainer can get you there. All you need is your bike, the M2, your favorite virtual training software, and device of choice. This do-it-all, smart bike trainer is capable of replicating any workout thrown its way, up to 1500 watts and a 15% climbing grade. Simply connect to your virtual training application of choice via integrated dual-band ANT+ FE-C and Bluetooth, and let the M2’s electromagnetic response system do the rest. And, thanks to integrated speed, cadence, and power data, you can track and record performance data without extra external sensors. Plus, our innovative clutch knob ensures perfect tire-to roller connection for every single ride. - Noise level is a quiet 69 decibels at 20 mph. - PowerTuned using PowerTap technology for accurate power readings up to +/- 5%. - This trainer is designed to fit common road and mountain bike frames with included steel quick release skewer and has three settings for rear dropout spacing: 120mm, 130mm, and 135mm. - Optional thru-axle adapter available for 142x12mm and 148x12mm. - Integrated dual ANT+ FE-C and Bluetooth standards. - Fast response electromagnetic resistance ensures most responsive resistance and maximum power available. - Robust design is capable of handling up to 1500 watts at 20 mph and can simulate up to a 15% climbing grade. - Headless mode (powered on, not paired to any apps) lets you ride with a progressive resistance curve that matches the Fluid2. - Internally integrated speed, cadence, and power data eliminates the need for extra external sensors. - LED indicator lights communicate connectivity and more. - Internal cooling system moves air through the trainer to keep it cool while active thermal sensors ensure accurate performance data even during the hardest of workouts. - Comes on the Saris foldable Classic frame with spring loaded, bolt-action lever. - Features clutch knob for perfect roller to tire tension each ride. - 2" resistance unit roller allows for 650b, 700c, 26", 27", and 29" - up to a 2.0-inch tire. - Does not fit 650c wheel sizes, nor all 29er tires. - Precision-machined alloy roller reduces tire wear and slippage. - Eccentric leveling feet allow for easy adjustment on uneven surfaces. - Trainer tire recommended - Compatible with a wide variety of devices and virtual training applications, including Rouvy, Zwift, TrainerRoad, and many more. Contact us with questions about compatibility with other software. - Over the air (OTA) firmware updates via Bluetooth devices ensures the M2 is up to date. - Some assembly required - All of our trainers are tested to the combined weight (rider and bike) of 300 lbs. - ANT+ and BlueGiga USB dongles sold separately - Not compatible with CycleOps- or Saris-branded 20/24" wheel adapter

With specifications more akin to a suspension fork than a traditional pump, the SuperPista combines a full metal shock piston design with the classic Italian leather plunger washer and self-lubricating linear bearings to create the highest-efficiency, smoothest-running SuperPista to date. Efficient, accurate, durable are the trademarks of the SuperPista floor pump. - High-mount digital gauge accurate to 1% with backlight, adjustable pressure alarm, and adjustable pressure units (uses two CR2032 batteries) - Full-size Ash wood handle with a secure carrier strap - High-efficiency 28mm SILCA leather piston assembly - Brass air check-valve assembly - Alloy barrel with plated steel piston shaft - Long filler hose with integrated Schrader chuck - Hiro locking-lever Presta chuck with a magnetic dock - Rated to 220psi

While "good enough" gets the job done, there is beauty in going above and beyond. The SILCA SuperPista Ultimate is the pinnacle of what a floor pump can achieve. From the highly accurate analog gauge to the magnetic HIRO dock to the lathe-turned Purpleheart wood handle, this floor pump embodies the SILCA mantra of passion, precision, performance. - Full Stainless Steel, Aluminum, Wood and Brass Construction—NO PLASTICS - SILCA Lifetime PLUS Shield Warranty—the most comprehensive warranty in all of Cycling - Ergonomic Purpleheart wood and Investment Cast Stainless Steel Handle - Full IGUS Linear Bearings for Ultimate Smoothness - Thick Full Grain Leather Piston Gasket—More Efficient and Durable than Rubber! - 1% Gauge Accuracy allows for Ultimate Ride Tuning

Give your little one a comfortable seat where they can enjoy the view as you pedal them around town. A 3-point safety harness with protective chest pad keeps them secure over bumps and through turns and an adjustable headrest allows for helmet clearance. The carrier mounts on an included alloy rear rack and has a quick release feature for easy on and off. - Quick release - Mounts on included alloy rear rack - Adjustable headrest for helmet clearance - Durable hi-impact polypropylene structure - Soft, washable, shock-absorbing seat pad - 3-point safety harness with protective chest pad - Two convenient in-seat storage compartments - Adjustable footrests w/straps - Grab bar w/padded grips - 40 lb weight limit - Brake Compatibility: Disc

Hook your bike up to Sunlite's F2 Trainer and ride whenever you want, regardless of weather, daylight or schedule issues. It features a heavy-duty steel frame for a stable base when you're cranking on the pedals and a quiet magnetic resistance unit for a real-world feel.

- Professional quality folding repair stand - Telescoping center pole and folding base make it easy to transport and store - 360-degree clamp rotation with quick release lever - Includes: Work Tray

Hook your bike up to Sunlite's F1 Trainer w/Remote and ride whenever you want, regardless of weather, daylight or schedule issues. It features a heavy-duty steel frame for a stable base when you're cranking on the pedals and a quiet magnetic resistance unit for a real-world feel. The remote lever attaches to your handlebar for easy resistance adjustment. Plus, this trainer includes an easy-to-use steel quick-release lever.

Hitch Sunlite's Trailer Tot to your bike and take your child to the local park, the pool, and the library. For convenient storage in your car or garage, its protective steel frame folds flat. If the weather turns sour, you can drop the front of the canopy so your little one stays dry. The Trailer Tot easily connects to your bike's axle and its quick-release 16-inch wheels roll smoothly along the pavement behind you. Clear canopy windows offer great views and reflective strips ensure you'll be seen too. There's even a pair of side compartments for those all-important snacks.

- The perfect trailer for taking your favorite pet along for the ride - Steel folding frame with 16-inch quick release wheels - 600D polyester canopy with vented window - PVC slip-proof reinforcement on foot rest - Attaches to rear axle via trailer hitch mount (Not pictured) - Included dog leash keeps pets safe and in the trailer - 66lb weight limit

Hitch Sunlite's Trailer Tot to your bike and take your children to the local park, the pool, and the library. Its protective steel frame is covered with 600D polyester and comfortably fits two children. If the weather turns sour, you can drop the front of the canopy so your little ones stays dry. The trailer easily connects to your bike's axle and its quick-release 20-inch aluminum wheels roll smoothly along the pavement behind you. Clear canopy windows offer great views so your precious cargo enjoys every moment of their bike adventure.

Dubbed 'Straggle-Check' frame bags, these bags are designed to fit both 700c and 650b Straggler and 700c Cross Check frames. Size up one size on your bag if you've got a 650b Straggler frame and voila, it fits. These are handmade by Revelate Designs in the U.S., made of Dimension Polyant VX 21 polyurethane coated fabric. It's durable, rip resistant, tightly woven and laminated to make it highly water resistant but not fully waterproof…. Revelate advises using stuff sacks inside (such as the one in which our bags are packaged) if you risk riding in extended downpours or underwater. Surly's Straggle-Check frame bags (as well as their mountain bags) are now using a ladder strap system, which allows greater flexibility in how you attach the bag to your frame. The ladder straps let you customize the fit and placement of the mounting straps so if you have some weird contraption clamped to your frame tubes like a chain keeper, cable pulley, or some trinket grandma gave you, it won't interfere with the mounting straps on the frame bag. They're also including foam bumpers for the mounting straps to minimize thread abrasion to the bag and attachment points Quality YKK brand water resistant zippers – with an improved, water resistant zipper 'garage' – control compartment access and help keep the weather out. Zippers are sewn with a stretch panel to relieve stress on the zipper as well. Stress even kills zippers. The large main compartment has a flexible divider inside, and there's a hydration port to make sure your whistle stays wet. There's also a compartment suitable for smaller items you'll access relatively often, like your map, phone, hard boiled eggs, uncontained pudding, marbles for playing marbles, your dugout, that ring you found that makes you disappear when you put it on, or whathaveyou. Frame bags such as this are light and reasonably voluminous. They are stable because they center weight low between your wheels and body, and they go places where racks and panniers are often troublesome, like singletrack. Note: due to the rough texture of the mounting straps, prolonged use may lead to scratched or worn paint. If you're worried about keeping everything looking pristine you probably ought to look for some other type of bag, or figure a way to protect the paint, such as duct tape, or tatting a top tube doily - for example.