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    Deals - Drivetrain

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    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 $839.30
    Save 34%
    SRAM GX Eagle Transmission Chainring - Thunder Mountain Bikes
    SRAM GX Eagle Transmission Chainring - Thunder Mountain Bikes
    GX Eagle Transmission Chainring
    SRAM
    $45.00 from $29.87
    Save 16%
    SRAM GX Eagle Trigger Shifter - Thunder Mountain Bikes
    GX Eagle Trigger Shifter
    SRAM
    $55.00 $46.20
    Save 18%
    SRAM GX Eagle mountain bike groupset with rear derailleur, shifter, cassette, and chain
    SRAM GX Eagle mountain bike groupset with derailleur, shifter, cassette, and chain for trail riding performance
    GX Eagle Upgrade Kit
    SRAM
    $505.00 $414.10
    Save 16%
    SRAM GX Eagle XG-1275 Cassette - Thunder Mountain Bikes
    SRAM GX Eagle XG-1275 Cassette - Thunder Mountain Bikes
    GX Eagle XG-1275 Cassette
    SRAM
    $255.00 $214.20
    Sold Out
    Black mountain bike rear derailleur with purple accent, featuring dual pulleys and gear mechanism
    GX T-Type AXS Replacement Cage
    SRAM
    $140.00 $117.60
    Save 10%
    GX Transmission AXS Rear Derailleur Cover Skid Kit
    GX Transmission AXS Rear Derailleur Cover Skid Kit
    SRAM
    $25.00 $22.50
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    Mountain bike headset parts: red spacer, black stem adapter, and silver bearing race
    GX Transmission AXS Rear Derailleur Full Mount Bolt Kit
    SRAM
    $20.00 $16.80
    Save 16%
    SRAM GX Transmission AXS Rear Derailleur Inner Cage - Thunder Mountain Bikes
    GX Transmission AXS Rear Derailleur Inner Cage
    SRAM
    $40.00 $33.60
    Save 18%
    SRAM GX Eagle AXS wireless mountain bike derailleur kit with battery, charger, and shifter
    GX Transmission Eagle AXS Upgrade Kit
    SRAM
    $605.00 $497.87
    Save 12%
    SRAM NX Eagle Chain - Thunder Mountain Bikes
    SRAM NX Eagle Chain - Thunder Mountain Bikes
    NX Eagle Chain
    SRAM
    $33.00 $29.04
    Save 44%
    SRAM NX Eagle DUB Crankset - Thunder Mountain Bikes
    SRAM NX Eagle DUB Crankset - Thunder Mountain Bikes
    NX Eagle DUB Crankset
    SRAM
    $125.00 from $69.97
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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 12%
    SRAM NX Eagle PG-1230 Cassette - Thunder Mountain Bikes
    SRAM NX Eagle PG-1230 Cassette - Thunder Mountain Bikes
    NX Eagle PG-1230 Cassette
    SRAM
    $120.00 $105.60
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    SRAM NX Eagle Rear Derailleur - Thunder Mountain Bikes
    NX Eagle Rear Derailleur
    SRAM
    $125.00 $105.00
    Save 16%
    SRAM NX Eagle Trigger Shifter - Thunder Mountain Bikes
    SRAM NX Eagle Trigger Shifter - Thunder Mountain Bikes
    NX Eagle Trigger Shifter
    SRAM
    $50.00 $42.00
    Save 18%
    SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes
    SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes
    NX/GX Eagle Groupset
    SRAM
    $530.00 from $434.60
    Save 18%
    SRAM NX/GX Eagle Upgrade Kit - Thunder Mountain Bikes
    SRAM NX/GX Eagle Upgrade Kit - Thunder Mountain Bikes
    NX/GX Eagle Upgrade Kit
    SRAM
    $370.00 $303.40
    Save 16%
    Shimano Optislick Derailleur Cable - Thunder Mountain Bikes
    Optislick Derailleur Cable
    Shimano
    $13.00 $10.92
    Save 16%
    Shimano Optislick Shift Cable & Housing Set - Thunder Mountain Bikes
    Shimano Optislick Shift Cable & Housing Set - Thunder Mountain Bikes
    Optislick Shift Cable & Housing Set
    Shimano
    $29.00 from $24.36
    Save 16%
    SRAM POD Ultimate Battery Door Kit - Coin Slot Version - Thunder Mountain Bikes
    POD Ultimate Battery Door Kit - Coin Slot Version
    SRAM
    $15.00 $12.60
    Save 16%
    Shimano Polymer Coated Shift Cable - Thunder Mountain Bikes
    Shimano Polymer Coated Shift Cable - Thunder Mountain Bikes
    Polymer Coated Shift Cable
    Shimano
    $25.00 from $21.00
    Save 20%
    Shimano Polymer Coated Shift Cable & Housing Set - Thunder Mountain Bikes
    Shimano Polymer Coated Shift Cable & Housing Set - Thunder Mountain Bikes
    Polymer Coated Shift Cable & Housing Set
    Shimano
    $37.00 from $29.71
    Save 16%
    SRAM PressFit 30 DUB Bottom Bracket - Thunder Mountain Bikes
    SRAM PressFit 30 DUB Bottom Bracket - Thunder Mountain Bikes
    PressFit 30 DUB Bottom Bracket
    SRAM
    $50.00 from $42.00

    Let customers speak for us

    from 3995 reviews
    Everything needed to complete the bleed

    Everything needed to complete the bleed. Quality components.

    Steve H.
    Pro Mineral Oil Bleed Kit - V3
    Solid grip, no noise

    Solid grip, no noise. Highly recommend.

    Steve H.
    Gold Label HD Brake Pads - SRAM Maven
    Smooth lever, love the adjustability

    Smooth lever, love the adjustability.

    Steve H.
    Maven Silver B1 Lever
    Perfect part and I love how the product page

    Perfect part and I love how the product page reminded me to get the end cap.

    Robert P.
    Rapid Drive 108 Freehub Body
    Awesome product and price

    Awesome product and price. Super fast delivery. I already have them installed and they are rolling super fast. Thanks Thunder Mountain!

    Johnboy
    Hydra Classic 6-Bolt Rear Hub
    Better than my last one from 2 years ago

    Better than my last one from 2 years ago. It’s freaking great, thanks!

    Johnboy
    Reverb AXS B1 Dropper Seatpost
    New pod is good

    New pod is good. Wasn’t sure if I’d like it or not but it’s pretty rad

    Johnboy
    AXS Pod Rocker Controller D1
    More comfort for the old rider

    Rock solid great handlebars 30 mm rise is perfect

    Kevin H.
    Fatbar Lite V3 Handlebar

    Unbelievable customer service. Great prices and fast shipping. You CAN have all three

    Bobby L.D.
    Thunder Mountain Bikes
    Bronze for the win

    Great Deity stem. Absolutely love the bronze on black!

    Thomas W.
    Copperhead Stem

    Epic service and I got the exact part faster than Amazon

    Bradley
    SLX BL-M7100 Brake Lever Blade
    Great

    Great service!

    Tony F.
    Float NA2 Air Spring Rebuild Kit

    Ordered a bleed kit and it arrived after 3 days! Thanks.

    William F.
    Thunder Mountain Bikes
    Love the crisp shifts on my

    Love the crisp shifts on my emtb!

    Peter L.
    XX Eagle Transmission AXS E-Bike Groupset

    Good packaging

    Juan
    BlackLabel 31.8mm Alloy Handlebar
    2716
    78