Skip to main content

FREE Shipping Now Available on Orders $50+ (excluding oversized items)

Why shop at Mad Dog Cycles? Learn more about our promise here!

Filter By:

  • Show More Brands

  • Show Fewer Brands
  • Show More Sizes
  • Show Fewer Sizes

Your Search: "Trek checkpoint"

$9.50
Trek proprietary suspension hardware. - Refer to Service Manual for assembly instructions and service - Sold individually
$9.50
Our 2437 open bore adapter is used to press 24x37 sealed bearings into bottom bracket cups, and direct fit frames like trek BB90. The adapter is machined with one step at 24mm ID, which fits into the center of the sealed bearing. - Installs: 24x37 bearing - Inner step outer diameter: 23. 8mm - Outer diameter: 36. 8mm - Thru hole diameter: 0. 387" (9. 8mm) - Inner hole sized to fit 1/2" threaded rod - Compatible with BP0006, BP0007 - Machined, red anodized aluminum - Sold individually (2 drifts required for some installations)
$9.50
Our GXP-LEFT open bore adapter is used to press 22x37 sealed bearings into SRAM GXP bottom bracket cups and direct fit frames like trek BB90. The adapter is machined with one step at 22mm OD, which fits into the center of the sealed bearing. - Installs: 22x37 (GXP) bearing - Inner step outer diameter: 21. 9mm - Outer diameter: 36. 8mm - Thickness: 7mm - Thru hole diameter: 0. 387" (9. 8mm) - Inner hole sized to fit 1/2" ACME threaded rod - Compatible with BP0006, BP0007 - Machined, red anodized aluminum - Sold individually
$9.95
Wolf Tooth Headset Spacers for Trek Knock Block are machined in the USA out of aircraft grade aluminum. - Compatible with Trek Knock Block system - These spacers have unique raised features that key to Knock Block compatible stems (made by Bontrager) - 1 1/8" top (straight 1 1/8" or 1 1/8" to 1 1/2" taper) steerer tubes only
$10.99
Suspension Part Trek Bolt M10X1.5X20 Alloy
$10.99
- Skewer Trek QR-18 100mm Bolt-On Front Black - Skewer Trek QR-18 135mm Bolt-On Rear Black
$12.99
Keep your investment protected with durable armor designed specifically for your ride. - Protection engineered to keep your ride looking as good as new for years to come. - Trek protective armor - Model-specific custom fit
$14.99
Keep your investment protected with durable armor designed specifically for your ride. - Protection engineered to keep your ride looking as good as new for years to come. - Trek protective armor - Model-specific custom fit
$16.98
Key features: - Original equipment replacement saddle ears for use with Bontrager saddles with carbon rails - Compatible with Bontrager and Trek rotary head seatpost and seat mast systems - Consult with manufacturer on compatibility with other saddle brands
$17.98
Der Part Trek Hanger Atb/Tandem
$17.98
Use With :Current Trek Road Frames Color : Black
$19.99
An adjustable, rear integrated kickstand that supports kids bikes, from 20" to 26" wheels. A leg to stand on for most kid's bikes Intended for kid's bikes with an integrated mount at the rear dropout, this ultra-stable kickstand with an adjustable length will keep your little riders' bikes upright. Installation is quick and easy and the adjustable length works for bikes with wheels from 20" wheels all the way to 26" wheels. Product details - Adjustable length fits bikes with 20-26" wheels - Compatible with Trek bikes equipped with integrated direct mount chainstays - Doesn't interfere with pedaling - Includes both M5 and M6 mounting hardware
$19.99
Keep your investment protected with durable armor designed specifically for your ride. - Protection engineered to keep your ride looking as good as new for years to come. - Trek protective armor - Model-specific custom fit
$19.99
Allows use of two Blendr mounts on a Trek Madone SLR. Genuine replacement parts Mount light, computer, GPS and/or cameras to your top-of-the-line aero road bike. Product details - Blendr works with this simple formula: Stem + Base + Mount. Add accessory - Bases for use with the Trek Madone SLR Aero Integrated handlebar - Add any accessory mount (sold separately) for an elegant, integrated look - Includes mounting hardware
$20.99
Keep your investment protected with durable armor designed specifically for your ride. - Protection engineered to keep your ride looking as good as new for years to come. - Trek protective armor - Model-specific custom fit
$22.00
Replacement headset bearings from FSA. - Compatible with most Trek MTB integrated headset systems - Sealed bearing for long life - Compatible with Knock Block Headsets
$25.99
Upgrade or refresh your bike. GENUINE REPLACEMENT PARTS When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement 20" wheels for Trek Kids bikes - Bolt-on axles for safety - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$26.99
Upgrade or refresh your Bontrager wheels. Genuine replacement parts Whether you're looking to upgrade to the newest and freshest drivetrain or simply hoping to refresh your trusty wheelset, Trek Genuine Replacement Parts have you covered. - Replacement freehub body - Compatible with SSR and Select wheels - Includes 11mm Allen key adapter for installation
$27.99
Upgrade or refresh your bike. When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement kids wheels - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$29.99 $51.99 42% Off
#GoByBike Encourage others to get out and help make the world a better place by using the power of the bicycle to get from A to B. The Trek Go By Bike Hoodie is built with an ultra-soft polyester, cotton, and rayon blend fleece that will have you feeling good while you're daydreaming about your next ride. A hoodie so comfortable that it's nearly impossible to take off. - Super-soft polyester, cotton, and rayon blend fleece for all-day comfort - Front kangaroo pocket for all off-bike essentials - Pullover hood for added warmth and style - Unisex style everyone will enjoy - Semi-fitted for a just-right look that's not too baggy and not too tight
$29.99 $51.99 42% Off
Warm and fuzzy A good hoodie is a wardrobe must-have—and our Trek Vintage Logo Hoodie doesn't disappoint. It's made from incredibly soft tri-blend fleece and features a large front pocket and cozy hood so you can carry what you need while staying warm during cool nights around the fire. A soft and cozy hoodie perfect for cool days or nights spent around a fire. - Super-soft polyester, cotton, and rayon blend fleece for all-day comfort - Front kangaroo pocket for all off-bike essentials - Pullover hood for added warmth and style - Unisex style everyone will enjoy - Semi-fitted for a just-right look that's not too baggy or tight
$31.99
Genuine replacement parts Genuine Trek replacement part to unload the battery. Original Equipment specifications. Compatible with Bosch Powertube RIB batteries. - The handle comes with the spring and RIB handle Spring loaded plunger - Hardware should be ordered separately
$36.99
A compact multi-tool that is designed for integrated storage in compatible Trek road frames. Compact and easily stowed The BITS Integrated Multi-Tool is a compact multi-tool that is designed for clean, integrated storage into compatible Trek road bike frames. The small but smart design features hex tools from 2-8mm along with a T25 Torx, and flathead screwdriver. The ergonomic design makes the tool as easy to use as it is to carry. Product details - Designed for secure integrated storage in the new Domane with storage door - CNC-machined keys for lightweight durability - 2, 2.5, 3, 4, 5, 6, and 8mm hex along with T25 and flat-head screwdriver - Slim profile makes it easy to pack on any ride - Ultralight aluminum alloy design
$41.99
Trek proprietary headset spacers compatible with Trek Knock Block model bikes. - 3 pack of 10mm spacers specific to the Knock Block system - Not to be used on a standard headset system
$42.00
Genuine replacement parts Revive your ride with a fresh set of bearings for your BB90/95 equipped carbon bike. Proprietary replacement bottom bracket for the Trek family of bikes. - Only compatible with 24mm cranks - Not compatible with BB30 cranks
$45.00
Genuine replacement parts Praxis bottom brackets feature precise tolerances and quality materials to ensure smooth, quiet spinning for many miles. No more creaking. Smooth operation. Fast bearing replacement. - For use with Trek T47 frames with 85.5mm bottom bracket shells - Compatible with Shimano 24mm cranks
$45.99
Upgrade or refresh your bike. GENUINE REPLACEMENT PARTS When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement 24" rim brake wheels for Trek Kids bikes - Does not include skewer, reflector, rim strip, valve, or owner's manual
$47.99
Authentic replacement Trek parts. Genuine replacement parts Get your bike back in action with a quality replacement headset. - 1-1/2in. Lower bearing - Angular contact bearings
$47.99
Genuine replacement parts Revive your ride with a fresh set of bearings for your BB90/95 equipped carbon bike. Proprietary replacement bottom bracket for the Trek family of bikes. - Only compatible with 24mm cranks - Not compatible with BB30 cranks
$49.99 $74.99 33% Off
Connect ANT+ and Bluetooth Smart devices to all of the data available from the DuoTrap S sensor for your on-the-bike wireless needs. • ANT+ 2.4 GHz and Bluetooth Smart wireless digital speed and cadence sensor • ANT+ and Bluetooth Smart allow simultaneous use of Trip 300 and smartphone • For use with many ANT+ and Bluetooth Smart wireless technology enabled devices • Includes Bontrager wheel magnet, crank cadence band, and CR2032 battery • Works with Trek DuoTrap compatible bikes
$53.00
- Trek Reaktiv Thru Shaft 200 hour service kit
$59.95
Wolf Tooth Precision Headsets for Trek Knock Block are machined in the USA out of aircraft grade aluminum with superior sealing for protection against the elements. Available in a variety of colors to add some style to your bike. These upper headsets are for Trek frames with molded-in internal bearing cups. - Designed to work with Trek's Knock Block system - The top cap on these headsets have unique raised features that key to Knock Block compatible stems (made by Bontrager - If spacers are needed, you will need to use special Knock Block compatible spacers with notch features - This product is the upper headset only - Lower headsets on bikes with Knock Block do not have any unique features. They are usually IS headsets which are available separately
$59.99
Upgrade or refresh your bike. When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement kids wheels - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$62.99 $69.99 10% Off
A comfortable, versatile helmet with clean aesthetics and the added protection of Mips. - Mips safety system helps provide additional protection from rotational forces in the event of certain cycling-related accidents - Refined styling with removable visor easily transitions from road to trail - Large vents and recessed channeling keep you cool on warm days - Trek Headmaster 3 fit system provides simple and secure adjustability with just one hand - Soft, comfortable helmet pads wick moisture and are easy to wash after a full day of fun
$62.99 $69.99 10% Off
A fun, comfortable kids' helmet that looks great and features the added protection of Mips. - Mips safety system - Fun, kid-friendly looks with a removable visor - Large vents and recessed channeling help kids keep a cool head - Trek Headmaster 3 fit system provides simple and secure adjustability with just one hand - Soft, comfortable helmet pads wick moisture and are easy to clean - Crash Replacement Guarantee provides free helmet replacement if involved in a crash within the first year of ownership - One Size: 48 - 52cm / 19" - 20"
$62.99 $69.99 10% Off
A fun, comfortable kids' helmet that looks great and features the added protection of Mips. - Mips safety system - Fun, kid-friendly looks with a removable visor - Large vents and recessed channeling help kids keep a cool head - Trek Headmaster 3 fit system provides simple and secure adjustability with just one hand - Soft, comfortable helmet pads wick moisture and are easy to clean - Crash Replacement Guarantee provides free helmet replacement if involved in a crash within the first year of ownership - One Size: 50 - 55cm / 20" - 22"
$63.99
Service and replacement parts specifically for Trek Knock Block technology. Genuine replacement parts Get your bike back on the trail with the headset parts you need. - Trek proprietary headset components compatible with Trek Knock Block models - 72-degree headset fits 2021 Slash 29 - Includes crown race, bearings, top cover, frame chip & fastener - Frame chip has display tabs to connect Bosch Kiox Mount sold separately - Must be paired with Knock Block stem and Knock Block spacers - Knock Block headset spacers not included
$69.98
When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. Upgrade or refresh your bike. - Original equipment replacement Bontrager Connection Disc wheels - Durable double-wall rim with 20mm internal, 26mm external width - Black rim graphics and spoke nipples - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$69.99
Upgrade or refresh your bike. When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement kids wheels - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$73.99
Upgrade or refresh your Bontrager wheels. Genuine replacement parts Whether you're looking to upgrade to the newest and freshest drivetrain or simply hoping to refresh your trusty wheelset, Trek Genuine Replacement Parts have you covered. - Replacement freehub body - Compatible with Bontrager Entry-level hubs
$73.99
When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. Upgrade or refresh your bike. - Original equipment replacement Bontrager Connection Disc wheels - Durable double-wall rim with 20mm internal, 26mm external width - Black rim graphics and spoke nipples - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$83.99
Upgrade or refresh your bike. When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement Bontrager Connection Disc wheels - Durable double-wall rim with 20mm internal, 26mm external width - Black rim graphics and spoke nipples - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$83.99
Upgrade or refresh your bike. - Affordable alloy seat mast cap - Direct fit on all Trek road bikes with round seat masts - 2-bolt design offers independent setback and tilt adjustments - Includes 7mm round saddle clamp ears
$84.95
Wolf Tooth Direct Mount Chainrings for Trek TQ E-Bike Motors are compatible with all Boost and Super Boost bikes that use the Trek TQ Motor. This brings a lightweight chainring with patented Drop-Stop® technology to e-bike chainrings for the first time. Direct Mount Chainrings for Trek TQ E-Bike Motors are machined with 7075-T6 aluminum at Wolf Tooth in Minnesota, USA. Compatibility: - Chainring is compatible with only TQ Motor drive systems - 55 mm chainline - Available in two different tooth profiles for optimal performance based on your chain type. Use Drop-Stop ST for use with Shimano 12-speed Hyperglide+ and 12spd KMC chains. Use Drop-Stop B for all 9, 10, and 11spd chains or 12spd SRAM Eagle, SRAM Flattop Road or Transmission (T-Type), KMC, Connex or Wippermann chains. DROP-STOP B - Compatible 9, 10, 11, and 12s SRAM Eagle, 12s SRAM Transmission (T-type) Flattop, 12s Campy, 12s KMC - Not compatible with 12s Shimano HG+ chains DROP-STOP ST - Compatible with 12s Shimano Hyperglide+ chain and 12s KMC chain only - Symmetric Trapezoidal (ST) tooth shape is optimized for Shimano HG+ chain Tech Specs: - Weights: 30t/64g | 32t/69g - Material: 7075-T6 aluminum - Made in the USA
$94.49 $104.99 10% Off
A durable, easy to install frame bag with clever internal pockets so you can carry more and roam farther than ever before. Adventure awaits with this durable frame bag featuring multiple pockets for all of your gear. The Adventure Boss Frame Bag is available in six sizes to ensure the best fit for your bike, and it mounts quickly and easily with a simple strap design. You can also pair it with the all-new Checkpoint for integrated, strapless top tube mounting using thumb screws (sold separately). Product details - Available in six sizes to best fit more frames and adventures - One main pocket and smaller compartment pocket make it easy to stay organized - Hi-vis lining and internal mesh pockets make finding your gear easy - Water-resistant construction helps keep your gear dry - Durable materials and robust zippers are designed to last - Easy-to-use attachment straps feature a soft rubber coating to reduce abrasion - Optional thumb screws allow for threaded boss mounting on new Trek Checkpoint
$95.99
When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. Upgrade or refresh your bike. - Original equipment replacement Bontrager Connection Disc wheels - Durable double-wall rim with 20mm internal, 26mm external width - Black rim graphics and spoke nipples - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$99.99
Upgrade or refresh your Bontrager wheels. Genuine replacement parts Whether you're looking to upgrade to the newest and freshest drivetrain or simply hoping to refresh your trusty wheelset, Trek Genuine Replacement Parts have you covered. - Replacement freehub body - Compatible with Bontrager Rapid Drive 108 hubs - Pawls and springs sold separately - Install 3 pawls/springs for 54 tooth engagement or 6 pawls springs for 108 tooth
$99.99
Upgrade or refresh your Bontrager wheels. Genuine replacement parts Whether you're looking to upgrade to the newest and freshest drivetrain or simply hoping to refresh your trusty wheelset, Trek Genuine Replacement Parts have you covered. - Replacement freehub body - Compatible with Bontrager Rapid Drive 108 hubs - Pawls and springs sold separately - Install 3 pawls/springs for 54 tooth engagement or 6 pawls springs for 108 tooth
$105.00
Upgrade or refresh your bike. When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement Bontrager Affinity TLR 24H wheels - Alloy double-wall rim with 21mm internal, 26mm external width, 24 hole fr/r - Convert to tubeless with TLR rim strip and valve, sold separately - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$105.00
Upgrade or refresh your bike. Genuine replacement parts When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. - Original equipment replacement Bontrager Line Comp 30 Rim - Convert to tubeless with TLR rim strip and valve, sold separately - Durable alloy symmetric rim with 28.5mm internal 33mm external width
$105.00
Original equipment replacement rims. Genuine replacement parts When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. - Original replacement rims for Bontrager Line Elite 30 wheels - Tubeless Ready Design - Optimize with Bontrager TLR Sealant, TLR rim strips, valve stems, and tires - Double wall alloy rim (33mm outer, 29mm inner width)
$105.00
Upgrade or refresh your Bontrager wheels. Genuine replacement parts Whether you're looking to upgrade to the newest and freshest drivetrain or simply hoping to refresh your trusty wheelset, Trek Genuine Replacement Parts have you covered. - Replacement freehub body - Compatible with Bontrager Rapid Drive 108 hubs - Pawls and springs sold separately - Requires Micro Spline specific end cap
$105.00
Genuine replacement parts Whether you're looking to upgrade to the newest and freshest drivetrain or simply hoping to refresh your trusty wheelset, Trek Genuine Replacement Parts have you covered. Product details Replacement freehub body Compatible with select Rhythm and Line wheels
$105.99
Upgrade or refresh your bike. GENUINE REPLACEMENT PARTS When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original Equipment replacement Bontrager TLR Disc wheels - Bontrager Approved double wall, non-eyeletted rims - Convert to tubeless with TLR rim strip and valve, sold separately - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$119.99
Upgrade or refresh your Bontrager wheels. Genuine replacement parts Whether you're looking to upgrade to the newest and freshest drivetrain or simply hoping to refresh your trusty wheelset, Trek Genuine Replacement Parts have you covered. - Replacement parts for Bontrager hubs using the DT 240 platform - Compatible with all Bontrager wheels with DT 240 hub internals - For use with Shimano MICRO SPLINE cassettes - Includes 12mm thru-axle end cap
$129.99
Upgrade or refresh your bike. GENUINE REPLACEMENT PARTS When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original replacement wheels for Electra bikes - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$134.99
Upgrade or refresh your bike. When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement Bontrager Connection Disc wheels - Durable double-wall rim with 20mm internal, 26mm external width - Black rim graphics and spoke nipples - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$144.99
Get back on the bike with a genuine replacement wheel. When it's time to refresh your trusty bike, Trek genuine replacement wheels have you covered. PRODUCT DETAILS - Original Equipment replacement Bontrager TLR Disc wheels - Bontrager Approved double wall, non-eyeletted rims - Convert to tubeless with TLR rim strip and valve, sold separately - Black spoke nipples - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$159.99
Get back on the bike with a genuine replacement wheel. When it's time to refresh your trusty bike, Trek genuine replacement wheels have you covered. PRODUCT DETAILS - Original replacement wheels for Electra bikes - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
$179.99
Get back on the bike with a genuine replacement wheel. When it's time to refresh your trusty bike, Trek genuine replacement wheels have you covered. PRODUCT DETAILS - Original equipment replacement Bontrager Kovee TLR 28H Hole wheels - Convert to tubeless with TLR rim strip and valve, sold separately - Durable alloy symmetric rim with 22.5mm internal 27mm external width - Does not include skewer, reflector, rim strip, valve, or owner's manual - Wheels shipped as photographed
Page 1 of 2 Next page