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    Components

    Bontrager Rapid Drive 108 Freehub Pawls - Thunder Mountain Bikes
    Rapid Drive 108 Freehub Pawls
    Bontrager
    $19.99
    Save 32%
    Shimano Deore XT BR-M8120 Disc Brake Set - 4 Piston - Thunder Mountain Bikes
    Shimano Deore XT BR-M8120 Disc Brake Set - 4 Piston - Thunder Mountain Bikes
    Deore XT BR-M8120 Disc Brake - 4 Piston
    Shimano
    $265.00 from $179.99
    Save 20%
    Gold Label HD Brake Pads - Shimano/TRP 4-Piston
    Gold Label HD Brake Pads - Shimano/TRP 4-Piston
    MTX Braking
    $35.99 $28.79
    Save 25%
    Industry Nine A35 Stem - Thunder Mountain Bikes
    Industry Nine A35 Stem - Thunder Mountain Bikes
    A35 Stem
    Industry Nine
    $155.00 from $116.25
    Save 7%
    Albert Radial Tire
    Albert Radial Tire
    Schwalbe
    $101.00 from $93.93
    Save 9%
    Maxxis Forekaster Tire - Thunder Mountain Bikes
    Maxxis Forekaster Tire - Thunder Mountain Bikes
    Forekaster Tire
    Maxxis
    $85.00 from $77.00
    Bontrager Rapid Drive 12mm End Cap - Thunder Mountain Bikes
    Bontrager Rapid Drive 12mm End Cap - Thunder Mountain Bikes
    Rapid Drive 12mm End Cap
    Bontrager
    from $17.99
    Save 21%
    Shimano Deore XT SM-CRM85 Chainring - 12-Speed - Thunder Mountain Bikes
    Shimano Deore XT SM-CRM85 Chainring - 12-Speed - Thunder Mountain Bikes
    Deore XT SM-CRM85 Chainring - 12-Speed
    Shimano
    $80.00 from $63.20
    Sold Out
    Shimano L05A-RF Disc Brake Pads - Resin/Aluminum - Thunder Mountain Bikes
    L05A-RF Disc Brake Pads - Resin/Aluminum
    Shimano
    $37.00 $31.08
    Save 21%
    SRAM GX Eagle Trigger Shifter - Thunder Mountain Bikes
    GX Eagle Trigger Shifter
    SRAM
    $55.00 $43.45
    Bontrager Rapid Drive 108 Freehub Body - Thunder Mountain Bikes
    Bontrager Rapid Drive 108 Freehub Body - Thunder Mountain Bikes
    Rapid Drive 108 Freehub Body
    Bontrager
    from $109.99
    Bontrager Rapid Drive 5mm End Cap(s) - Thunder Mountain Bikes
    Bontrager Rapid Drive 5mm End Cap(s) - Thunder Mountain Bikes
    Rapid Drive 5mm End Cap(s)
    Bontrager
    from $17.99
    Save 21%
    SRAM X01 Eagle Trigger Shifter - Thunder Mountain Bikes
    SRAM X01 Eagle Trigger Shifter - Thunder Mountain Bikes
    X01 Eagle Trigger Shifter
    SRAM
    $105.00 $82.95
    Save 57%
    Bontrager XR4 Team Issue MTB Tire - Thunder Mountain Bikes
    Bontrager XR4 Team Issue MTB Tire - Thunder Mountain Bikes
    XR4 Team Issue MTB Tire
    Bontrager
    $69.99 from $29.99
    Orange Seal Regular Tire Sealant Refill - Thunder Mountain Bikes
    Orange Seal Regular Tire Sealant Refill - Thunder Mountain Bikes
    Regular Tire Sealant Refill
    Orange Seal
    from $8.79
    Save 21%
    Shimano Deore XT CS-M8100 Cassette - Thunder Mountain Bikes
    Shimano Deore XT CS-M8100 Cassette - Thunder Mountain Bikes
    Deore XT CS-M8100 Cassette
    Shimano
    $195.00 $154.05
    Save 25%
    Maxxis Assegai Tire - Thunder Mountain Bikes
    Maxxis Assegai Tire - Thunder Mountain Bikes
    Assegai Tire
    Maxxis
    $85.00 from $64.00
    Save 20%
    MTX Braking Red Label Race Brake Pads - Shimano/TRP 4-Piston - Thunder Mountain Bikes
    Red Label Race Brake Pads - Shimano/TRP 4-Piston
    MTX Braking
    $35.99 $28.79
    Save 46%
    Industry Nine Hydra Classic 32h 6-Bolt Rear Hub - Thunder Mountain Bikes
    Industry Nine Hydra Classic 32h 6-Bolt Rear Hub - Thunder Mountain Bikes
    Hydra Classic 6-Bolt Rear Hub
    Industry Nine
    $460.00 from $249.99
    Bontrager Presta Valve Bicycle Tube - Thunder Mountain Bikes
    Presta Valve Bicycle Tube
    Bontrager
    $10.49

    Let customers speak for us

    from 2404 reviews
    xt di2 8250

    This upgrade is amazing. Everything you need to go wireless. Easy set up and precise shifting, smooth and quick. Doubt if i'll ever go back to cable/housing.

    Jay F.
    Deore XT DI2 M8250 Upgrade Kit
    Great price and fast shipping

    Thunder Mountain Bikes is my go place for on-line purchases. They always have what I need at great prices and extremely fast shipping. If Thunder Mountain and “Shop X” have the same price, I always choose Thunder Mountain for their fast shipping plus everyone that works there are great people

    Chris B.~.C.C.
    GX Eagle DUB Crankset
    Great wheel

    Smooth hub and great wheel for trail riding!!

    John S.
    Trail S Hydra Front Wheel

    These are the best crank boots, use them on all my Shimano cranks.

    Richard
    Shimano Crank Arm Protector Boots

    Shimano quality as usual, 5 stars.

    Richard
    Deore XT CN-M8100 (M8200) Chain

    Love how this adapter cleaned up the cockpit with my Shimano I-Spec EV brakes.

    Richard
    Triggy Handlebar Adaptor

    Love the grips

    Jerrod
    Megattack Grips

    Love the grips

    Jerrod
    Megattack Grips

    Love the grips

    Jerrod
    Megattack Grips
    Good product, great service

    The stem was exactly what I expected. The service was great and I would gladly do business with Thunder Mountain the next time I need more bike stuff!

    Bob W.
    Elite 35 Stem
    Works Great

    This replacement charging port cap works great! Unfortunately, replacing it on an Ari Nebo peak required me to take it to a bike shop to get it replaced.

    Ricardo D.
    Ride 60 Charge Port Cap
    Boing boing

    Awrsome service as always

    Rob L.
    Steel Coil Spring
    Fit My XO Alloy Cranks

    Fit, seem pretty robust.
    Turbo Levo4 Pro.

    Jerry
    Crank Arm Boots
    Quality Cable

    Only disappointment is that they sold out.
    Heavy duty, right angle works with any USB C device.

    Jerry
    USB C to A Cable
    Perfect!!!!!!

    Takes pressure of the weaker part of your pedal stroke. Great for long rides to save your knees!

    Robert H.
    SRAM T-Type Oval Chainring
    2356
    78