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    Groupsets

    Save 16%
    SRAM GX Eagle AXS Upgrade Kit - Thunder Mountain Bikes
    GX Eagle POD AXS Upgrade Kit
    SRAM
    $625.00 $525.00
    Save 15%
    X01 Eagle AXS Upgrade Kit
    X01 Eagle AXS Upgrade Kit
    SRAM
    $875.00 $743.75
    Save 20%
    SRAM XX1 Eagle AXS Upgrade Kit - Thunder Mountain Bikes
    XX1 Eagle AXS Upgrade Kit
    SRAM
    $1,170.00 $939.87
    Save 12%
    Shimano Deore XT LinkGlide M8130 Upgrade Kit - Thunder Mountain Bikes
    Deore XT LinkGlide M8130 Upgrade Kit
    Shimano
    $436.00 $383.68
    Save 15%
    XTR DI2 M9250 Upgrade Kit
    XTR DI2 M9250 Upgrade Kit
    Shimano
    $985.00 $837.25
    Save 20%
    SRAM GX Eagle Transmission AXS E-Bike Groupset - Thunder Mountain Bikes
    SRAM GX Eagle Transmission AXS E-Bike Groupset - Thunder Mountain Bikes
    GX Eagle Transmission AXS E-Bike Groupset
    SRAM
    $1,049.00 from $839.20
    Save 15%
    Deore XT DI2 M8250 Upgrade Kit
    Deore XT DI2 M8250 Upgrade Kit
    Shimano
    $860.00 from $731.00
    Save 25%
    SRAM GX Eagle Transmission AXS Groupset - Thunder Mountain Bikes
    SRAM GX Eagle Transmission AXS Groupset - Thunder Mountain Bikes
    GX Eagle Transmission AXS Groupset
    SRAM
    $1,199.00 $899.25
    Save 16%
    SRAM X0 Eagle Transmission AXS E-Bike Groupset - Thunder Mountain Bikes
    SRAM X0 Eagle Transmission AXS E-Bike Groupset - Thunder Mountain Bikes
    X0 Eagle Transmission AXS E-Bike Groupset
    SRAM
    $1,429.00 from $1,199.25
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    SRAM NX Eagle Groupset - Thunder Mountain Bikes
    SRAM NX Eagle Groupset - Thunder Mountain Bikes
    NX Eagle Groupset
    SRAM
    $445.00 $349.99
    Save 25%
    SRAM XX Eagle Transmission AXS Groupset - Thunder Mountain Bikes
    SRAM XX Eagle Transmission AXS Groupset - Thunder Mountain Bikes
    XX Eagle Transmission AXS Groupset
    SRAM
    $2,299.00 $1,724.25
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    SRAM XX SL Eagle Transmission AXS Groupset - Thunder Mountain Bikes
    SRAM XX SL Eagle Transmission AXS Groupset - Thunder Mountain Bikes
    XX SL Eagle Transmission AXS Groupset
    SRAM
    $2,399.00
    Deore DI2 M6250 Upgrade Kit
    Deore DI2 M6250 Upgrade Kit
    Shimano
    $675.00
    S500 Eagle AXS Upgrade Kit
    S500 Eagle AXS Upgrade Kit
    SRAM
    $599.00
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    SRAM XX SL Eagle Transmission AXS Power Meter Groupset - Thunder Mountain Bikes
    SRAM XX SL Eagle Transmission AXS Power Meter Groupset - Thunder Mountain Bikes
    XX SL Eagle Transmission AXS Power Meter Groupset
    SRAM
    $2,999.00
    Eagle 90 Transmission E-Bike Groupset
    Eagle 90 Transmission E-Bike Groupset
    SRAM
    from $650.00
    Save 25%
    SRAM XX Eagle Transmission AXS E-Bike Groupset - Thunder Mountain Bikes
    SRAM XX Eagle Transmission AXS E-Bike Groupset - Thunder Mountain Bikes
    XX Eagle Transmission AXS E-Bike Groupset
    SRAM
    $1,759.00 from $1,319.25
    Eagle 90 Transmission Groupset
    Eagle 90 Transmission Groupset
    SRAM
    from $695.00
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    Shimano Deore LinkGlide M5130 Upgrade Kit - Thunder Mountain Bikes
    Deore LinkGlide M5130 Upgrade Kit
    Shimano
    $198.96 $157.18
    Save 15%
    S200 Eagle Groupset
    S200 Eagle Groupset
    SRAM
    $535.00 $454.75

    Let customers speak for us

    from 3789 reviews
    It is working very

    It is working very well!

    Terry T.
    Hydraulics Reservoir
    Oval Chainring

    Awesome parts, the oval chainring helps with climbing effort and cadence.
    Thunder mountain delivered super fast, great bike shop. Thanks!

    Andrew K.
    SRAM 3-Bolt Oval Chainring
    love the color

    love the color AND the grip

    Anonymous
    Aluminum Flat Pedal
    Great price and shipping

    Great price and shipping. Better than Amazon. Loving the improved ground clearance on the enduro bike

    Zac P.
    GX Eagle DUB Crankset
    Game changer

    Game changer !!!

    Brian S.
    Fatbar V3 Handlebar

    Only crank boots that work and last on Shimano cranks. Never ride without them!

    R.A.W.
    Shimano Crank Arm Protector Boots

    A better version of the stock UDH, appreciate the accent color to match my bike

    R.A.W.
    Universal Derailleur Hanger (UDH)

    Vast improvement in feel, stopping power & longevity compared to stock. Nothing but MTX on my XT's!

    R.A.W.
    Red Label Race Brake Pads - Shimano/TRP 4-Piston

    Awesome grips, nothing comes close in comfort, size and durability

    R.A.W.
    Megattack Grips

    Chrome makes you faster!

    R.A.W.
    Handlebar Decal Kit

    The new V2 bars are noticeably improved which i thought could not be possible!

    R.A.W.
    Carbon V2 35mm Handlebar
    No issues with fit or alignment

    No issues with fit or alignment. Runs smooth.

    Anonymous
    SRAM Direct Mount Chainring
    Great chainring and outstanding quality

    Great chainring and outstanding quality.

    Jose R.
    SLX M7100 (SM-CRM75) Chainring
    Lever's great, but TM Bikes is even better.

    Brake lever is perfect and simple to install. But more importantly, Thunder Mountain Bikes delivered quickly with reliable tracking. Would shop here again.

    Eric B.
    Deore XT BL-M8100 Brake Lever Blade
    Mullet gravel

    Replaced my 11-42 cassette to complete my mullet gravel drivetrain conversion on my Salsa Cutthroat.

    TERRANCE Z.
    Deore CS-M5100 Cassette
    2551
    78