Parts & Accessories

Know what's coming. Ride with extra confidence with Trek CarBack Radar Rear Light. CarBack's radar helps detect rear-approaching vehicles from up to 240m and provides audio and visual alerts through paired GPS head units for increased on-bike awareness. Built with integrated best-in-class Daytime Running Lights that are visible from up to 2km away, CarBack is a must-have for every cyclist riding on shared roads. - CarBack can detect and alert riders of rear-approaching vehicles from up to 240m away - Compatible with most cycling GPS computers - Pair CarBack with the Trek Accessory app to see a vehicle's rear-approaching and passing distance on your smartphone - Designed with focus, flash, and range to be Daytime-visible from up to 2km away - Four light flash modes: Day Flash 90LM, Day Steady 25LM, Night Steady 5LM, and Night Flash 5 LM - Visible fuel gauge LEDs make it easy to see CarBack's 7+ hour battery status - IPX7 waterproof rating to confidently ride through wet conditions - Includes Quick Connect Plus rear mount and USB-C charging cable

The new DN300 Built-In type battery features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12-speed road derailleurs (and shifters if a fully wired option is selected). - Compatible with thinner next-generation electric wire SD300 and systems after R9250/R8150 series - Li-Ion type - Capacity: 500 mAH |3.7Wh (± 2000km autonomy) - Rated voltage: 7.4V - Charges through RD-R9250 |RD-R8150 rear derailleur using EW-EC300 Di2 Charging Cable (sold separately) - Fixing small parts included - Weight: 52g

The Shimano EW-EC300 Charging Cable is compatible with new Shimano 12-speed road Di2 systems. This cable will also recharge the Dura-Ace R9200 and Ultegra R8100 power meter cranksets. 1700mm cable length

SRAM eTap batteries are literally a snap to remove and charge. Just flip the tool-free battery latch up and slide the battery up and out of the derailleur. Then snap the battery into the USB powered charger and connect the charger to any USB power source or A/C USB adaptor. A full charge takes just 45 minutes to complete. - Finish: Black - Compatibility: SRAM RED eTap

SRAM eTap Battery is the power source for the eTap system. The same power unit is interchangeable between front and rear derailleurs. - Up to 1000 kilometers of riding per charge - Weight: 24g - Finish: Black - Compatibility: SRAM RED eTap

The Quad Lock® Bike Mount is the lightest, strongest and most secure smartphone bike mount on the market. SECURE MOUNTING Featuring a patented dual-stage lock, you can ride with confidence over bumps and jumps knowing that your smartphone isn’t going anywhere your bike isn’t. QUICK TO ATTACH / DETACH Simply twist and lock to view apps such as Strava®, MapmyRide or Apple® maps as you ride. Detach just as easily so you don’t miss a photo opportunity or important phone call. SLEEK DESIGN At just 23mm tall and 35mm wide, the Quad Lock® Bike Mount fits seamlessly onto the stem or handlebar of your bike.

Position your smartphone at the perfect point for easy viewing and aerodynamics while riding with the help of the Quad Lock Out Front Mount. Featuring a strong dual-stage lock you can ride with confidence over bumps and jumps knowing that your phone isn't going anywhere your bike isn't. - Handlebar mount only, no phone case included - Compatible with handlebars 31.8mm, 25.4mm, and 22.2mm diameter - Can also be rotated for over stem mounting - Anodized aluminum mounting arm - Compatible with all Quad Lock cases and universal adapters

Choose between the Quad Lock® Out Front Mount or the Quad Lock® Out Front Mount PRO. SECURE MOUNTING Both mounts come with our patented dual-stage lock, which allows you to ride with confidence knowing that your smartphone will stay secure on your bike, no matter the terrain. QUICK TO ATTACH / DETACH Simply twist and lock to view apps as you ride such as Strava®, MapMyRide or Apple® maps. Detach just as easily so you don’t miss a photo opportunity or important call. Remember, it’s all in the technique, not the force. UNRIVALLED DESIGN Both mounts are designed for aerodynamics. The Out Front Mount PRO features a lower profile and super rigid anodised aluminium mounting arm. The standard Out Front Mount can be reversed to go over the stem of your bike's handlebars. Add a coloured lever to style your Quad Lock® Mount to your bike.

The Quad Lock Universal Adapter is designed using a strong adhesive that adheres directly to the rear of most smartphones or cases, which then allows your smartphone to securely attach to any Quad Lock mount. - Universal adapter adheres directly to phone or phone case (not included) - Dual-stage lock keeps your phone secure over bumps and jumps - Compatible with all Quad Lock mounts - Does not include mount

Save space in your bicycle's cockpit with our Quad Lock® Stem Cap Mount or Quad Lock® Stem Cap Mount Adjustable. Both securely install between your bicycle's stem and stem cap, offering compatibility with a large variety of stem angles. SECURE MOUNTING These are our lightest and strongest bike mounts. Engineered from ultra-light aircraft-grade aluminium, then rigorously tested for unmatched strength and durability. This high-performance material ensures the mounts remain tough without adding unnecessary weight, making them ideal for cyclists who demand strength and efficiency. With our patented dual-stage lock, you can ride confidently, knowing your smartphone will stay secure, even on the roughest terrain. SLEEK DESIGN Crafted from premium aircraft-grade CNC-machined aluminium, with black hardware and a compact black lever, our Stem Cap Mounts offer a minimal and lightweight aesthetic. They install seamlessly between your bike's stem and stem cap, ensuring a clean, unobtrusive look. OPTIMAL VIEWING POSITION Both mounts feature a dual-sided head design, allowing you to mount the lever head on either side, offering more flexibility in adjusting your optimal phone viewing position on a variety of stem angles. The Stem Cap Mount Adjustable features a screw-tightened hinge to hold firmly in place in your preferred viewing angle. QUICK TO ATTACH / DETACH Simply twist and lock to view apps as you ride such as Ride with GPS®, Strava® or maps. Detach just as easily so you don’t miss a photo opportunity or important call.

The K-EDGE Garmin Stem Mount is a great upgrade solution for cyclists who prefer their computer above the stem. Mounting off of the steerer tube, the mount replaces a standard 5mm spacer, and is locked securely in place by the top cap compression system. The adjustable version allows for a variety of different stem angles. Can be used with positive or negative degree stems and additional spacers can be added (5mm to 10mm) above the stem. Note that some of the larger computers will not always work with a steep angled stem. Designed with mountain biking in mind, the K-EDGE Stem mount is also ideal for much more including: cyclocross; triathlon; bike touring; or if you simply prefer this position for your computer.

The K-EDGE Garmin TT Mount is the most advanced Time Trial and Triathlon computer mount available. Featuring a twist-lock mechanism to lock your Garmin with confidence. The K-EDGE Garmin TT Mount’s aluminum design and its unique locking feature is by far the most advanced mount on the market. With traditional TT mounts for the Garmin computer, you have to either have enough room between the extensions to perform the ¼ turn “twist” or the computer has to be mounted above the extensions. - CNC Machined 6061-T6 Aluminum Platform, Injection Molded Copolymer Interface - Compatibility – 22.2mm diameter TT Extensions - Supported Computers – Garmin Edge 20, 25, 200, 500, 510, 520*, 800, 1000, and Forerunner 310XT - Made in Boise, Idaho, USA - Lifetime Guarantee against material or manufacture defects. Damages due to abuse or crashing excluded. *Garmin 520 is not compatible at this time.

The Top Tube Mount places your computer front and center on the top tube of Gravel, MTB, and Adventure Bikes with preset mounting positions. - Compatible with all Garmin cycling computers - Multi-mount positions - Garmin approved insert protects the computer body tabs in the event of a crash - All hardware included - CNC machined in Boise, Idaho USA - Made in USA - Lifetime warranty

The Smart Charger can charge your 625WH EnergyPak to charge 80 percent in just 2.5 hours. Helps extend battery life by using a lower voltage after 500 cycles, while total charging time remains the same. Switching between full charge and 60% storage mode can be done with the simple press of a button. - Compatible with our newest systems, the Smart Charger is the fastest way to charge your EnergyPak - 2.5 hours to charge 80 percent with an EnergyPak Smart for 625WH EnergyPak - Helps extend battery life by using a lower voltage after 500 cycles, while total charging time remains the same - Switching between full charge and 60% storage mode can be done with the simple press of a button - Include adapter to charge your EnergyPak off the bike

Combine with Giant's Computer / GoPro Combo Mount and fit your Garmin and GoPro to any Giant round or SLR Aero handlebar.

Take your riding to the next level with the addition of speed and cadence. Features - Sensor magnet kit for RideSense speed and cadence sensors Kit includes: - RideSense speed magnet - RideSense cadence magnet

Get the most out of your ride with the addition of speed and cadence. Whether you are a weekend warrior or data junkie we’ve got you covered. Features - Sensor magnet kit for RideSense speed and cadence sensors Kit includes: - RideSense speed magnet - RideSense cadence magnet

With full system integration, the RideControl series makes sure you have exactly everything you need at your fingertips. Features - Functional and sleek unit design combines display and function buttons in one unit - Compact full color display - Provides easy to read riding data such as speed, distance, time, cadence, and battery capacity - Walk Assist mode button for tackling steep hills - Convenient USB charging port - Please contact us for questions regarding your E-Bike's compatibility

- Cleanly integrated buttons for display-free handlebar controls. - Integrated battery and support mode indicator functions. - Walk Assist mode button for tackling steep hills. - Compatible with ANT+ and RideDash Plus displays. - Waterproof rating: IP67. - RideControl App compatible.

Stay ahead of the pack with Garmin's Out-front Bike Mount that lets you to take full advantage of your Edge's capabilities without compromising your ride. The mount positions your device for easier monitoring and safety. Also compatible with the Forerunner 910XT and 310XT when used with a quick-release kit (sold separately).

Stay aware of approaching cars with Varia RTL515 rearview radar. It pairs with your Edge bike computer or compatible smartphone to alert you of vehicles approaching from behind up to 153 yards (140 meters) away. When used with your compatible smartphone, the Varia app uses bold graphics — plus tone and vibration alerts — to indicate the position and speed of approaching vehicles. MAXIMUM AWARENESS - Varia RTL515 rearview radar provides visual and audible alerts for vehicles approaching from behind up to 153 yards (140 meters) away. MULTIPLE PAIRING OPTIONS - This radar works seamlessly with your Edge bike computer or compatible smartphone as well as select Garmin wearables or the optional radar display unit. WORKS WITH THE VARIA APP - This smartphone app helps you increase your awareness by providing graphics — plus tone and vibration alerts — that indicate the position and speed of approaching cars. THIRD-PARTY APP COMPATIBLE - When used with a compatible smartphone, Varia radar integrates with your favorite apps, such as Ride with GPS to overlay your maps with rearview radar alerts. SUPERIOR VISIBILITY - Alert motorists to your presence as soon as possible with daylight visibility up to 1 mile. COMPACT DESIGN - Easily mount this sleek, compact device on the seatpost of almost any road-use bicycle. The vertical design allows for better leg clearance and a perfectly comfortable ride. PELOTON MODE - Varia RTL515 features multiple modes, including peloton mode, which provides a low-intensity flash that is kind to other cyclists’ eyes when riding in a group. BATTERY LIFE - Time spent charging is not as good as time spent riding. Get up to 16 hours of battery life in day flash mode and up to 6 hours in solid mode. Physical Specifications - Dimensions: 3.9” x 0.8” x 1.6" (98.6 x 19.7 x 39.6 mm) - Weight: 2.5 oz (71.0 g) - Modes: solid, peloton, night flash, day flash - Lumens: 20 solid, 8 peloton, 29 night flash, 65 day flash - Battery life: 6 hours solid, 8 hours peloton, 6 hours night flash, 16 hours day flash - ANT+: Yes - BLE: Yes - Water rating: IPX7 - Viewing angle: 220° In the box: - Varia RTL515 - Mounting Kit - Cables - Documentation

Mount your Varia Rearview Radar or Varia Smart Bike Light (each sold separately) to an aero or round seat post with this quarter-turn mount. Includes mount, 2 fitting shims and 4 O-rings.

Getting the correctly sized magnets means you're worrying about where the next coffee stop is, not if your computer is recording the ride. Key features: - Universal crank magnets work with any cadence sensor - Get the perfectly sized magnet, sized right for your bike and sensor - 20mm cadence magnet improves signal for wider gaps between crank and sensor

Zipp delivers an uncomplicated computer mount for aerobar extensions that’s easy to install, lightweight, and vibration and slip free. The 22.3mm industry standard mount installs simply and securely on aero extensions. The Zipp QuickView TT Computer Mount is aerodynamically shaped for left-side installation, but also can be installed on the right bar extension. It comes with a single Torx T25 bolt, flexible mounting clamp, and a quarter-twist mount.

**Only compatible with SL Sprint Stem (4 bolt)** Zipp’s QuickView Integrated stem faceplate computer mount provides an efficient fix for an emerging challenge on modern bikes, system integration. This new mount doubles as the stem faceplate for a clean look that securely holds your cycle computer and a light or camera. No more multiple mounts bolted on here and there. The mount sits in front of your Zipp stem, positioning it for easy viewing and access. The Zipp QuickView Integrated mount will have two variants, one compatible with Service Course, Service Course SL, and SL Speed models, and another designed for use with the SL Sprint. This is an easy way to add elegant integration to your road bike. FEATURES -Computer compatibility: Garmin™, Wahoo™ -Accessory compatibility: GoPro™ -Lights: Niterider Lumina Series™ (with adapter), Light and Motion™, Bontrager™ (with adapter), Gloworm™ (with adapter), Lezyne™ (with adapter), Infini™ (with adapter), Sigma Sport™ -Lifetime warranty

Handlebar computer mount for Garmin/Wahoo for Vuka Shift AXS

- Easy to mount smartphone case holder - High resistance against impacts - 360 degrees adjustable angle - Quarter-turn type mount allows to place the phone in portrait or landscape mode - Waterproof, touch-screen compatible cover included

The Wahoo BlueSC speed and cadence sensor transforms your phone into a powerful cycling computer. Using Bluetooth Smart and ANT+ technology, it tracks cycling speed, cadence, and distance which can be paired with your favorite cycling app including Strava and Zwift, or paired to your bike computer. It's weatherproof, small with a low drag profile, and comes with a rubber band and zip tie mounts. - Both ANT+ and Bluetooth Smart capabilities allow for a wireless connection to both smartphones and GPS devices. - No tangled wires on your bike to connect the sensor to your device. - Provides accurate speed data during your ride - Provides accurate cadence data during your ride - BlueSC comes with a rubber band mount and zip tie mount. - The Blue SC sensor will fit with most bikes and frame sizes

Our patent-pending integrated mount for the ELEMNT ROAM GPS bike computer is made of durable, lightweight plastic. It also comes with an optional locking screw that is UCI-compliant for connecting your ELEMENT ROAM to your bike for weigh-ins. - Fits 31.8mm round bars - Weight: 1.55 oz (44g) - Works exclusively with ELEMNT ROAM

Our stem mount for Wahoo ELEMNT GPS bike computers is made of lightweight, durable plastic and is a great solution for cyclists who prefer to keep their computer on top of the stem. - Fits any stem - Weight: 0.2oz - Works with ELEMNT, ELEMNT ROAM, ELEMNT BOLT, and ELEMNT Mini Note: BOLT loses aerodynamic advantage with this mount)