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    Shimano Altus rear derailleur for mountain bikes, black component with gear pulleys
    Shimano Altus rear derailleur for mountain bikes, silver and black component
    Altus RD-M310 Rear Derailleur
    Shimano
    $31.00 from $26.04
    Save 16%
    SRAM mountain bike chain guide with mounting bolts, precision aluminum design for trail riding
    Eagle 90 T-Type Inner Cage
    SRAM
    $30.00 $25.20
    Save 16%
    DUB bottom bracket parts: black threaded cup, blue-sealed bearing, and metal washer for mountain bike repair
    Eagle 90 - Crank Bolt M18/M30
    SRAM
    $10.00 $8.40
    2026 Float X2 Factory Shock
    2026 Float X2 Factory Shock
    Fox
    from $769.00
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    SRAM T-Type mountain bike chainring for trail riding performance
    S1000 Eagle Transmission Steel DM Chainring
    SRAM
    $25.00 $21.00
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    Black bike seat post clamp bolt with spring and cap for mountain bike repair
    Eagle 90/70 Trigger Barrel Adjuster Kit
    SRAM
    $8.00 $6.72
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    Six Enduro brand bearings stacked, ideal for mountain bike maintenance and upgrades.
    Four Enduro brand bicycle bearings stacked, ideal for mountain bike maintenance and upgrades.
    Hydra Gen 2 Hub Ceramic Bearing Kit
    Industry Nine
    $200.00 from $97.87
    Shiny metal bike headset spacer for mountain bike upgrades and maintenance
    Hydra Gen 2 Front Hub Axle
    Industry Nine
    $13.25
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    Shimano CUES rear derailleur for mountain bikes, sleek black design with precision gears
    CUES RD-U4000-GS Rear Derailleur
    Shimano
    $60.00 $38.87
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    Chromag Mood DT mountain bike saddle with CR-MO rails, black perforated design for trail riding comfort
    Chromag Mood DT Saddle CrMo Rails - Black/Gray
    Chromag
    $80.00 $72.00
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    Black Race Face Next SL mountain bike frame protectors with embossed branding
    RaceFace Crank Boots - For Next SL G4 Cranks - Yellow
    Next SL G4 Crank Boots
    Race Face
    $12.99
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    Chromag mountain bike saddle with CR-MO rails, ergonomic design for trail riding comfort
    Chromag Trailmaster mountain bike saddle with blue graphic design and CR-MO rails
    Chromag Trailmaster DT Saddle
    Chromag
    $90.00 from $81.00
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    SRAM DB8 mountain bike hydraulic disc brake lever for trail riding
    DB8 Hydraulic Brake Lever
    SRAM
    $85.00 $71.40
    Industry Nine 1/1 Front End Cap Kit - Thunder Mountain Bikes
    1/1 Rear End Cap Kit - Micro Spline
    Industry Nine
    $27.50
    RimPack mountain bike rim strips for tubeless tire setup, durable protection for off-road riding
    Rimpact mountain bike rim strips for tubeless tire setup, durable protection for off-road cycling
    EDH / PRO V2 Tire Insert Set
    Rimpact
    from $124.99
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    Chromag Dune Grips - Thunder Mountain Bikes
    Chromag Dune Grips - Thunder Mountain Bikes
    Dune Grips
    Chromag
    $35.00 $31.50
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    Burgtec Penthouse MK5 Pedals - Thunder Mountain Bikes
    Burgtec Penthouse MK5 Pedals - Thunder Mountain Bikes
    Penthouse MK5 Pedals
    Burgtec
    $174.14
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    SRAM Maven Bronze Disc Brake Set - Thunder Mountain Bikes
    SRAM Maven Bronze Disc Brake Set - Thunder Mountain Bikes
    Maven Bronze A1 Disc Brake Set
    SRAM
    $185.00 $146.15
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    Wolf Tooth Shimano Steps Chainring - Thunder Mountain Bikes
    Wolf Tooth Shimano Steps Chainring - Thunder Mountain Bikes
    Shimano Steps Chainring
    Wolf Tooth
    $84.95 from $49.87
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    SRAM Code RSC mountain bike brake lever with installation hardware and tool
    Code Bronze Stealth Brake Lever
    SRAM
    $100.00 $74.99
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    SRAM Code Bronze Stealth Brake Lever Blade - Thunder Mountain Bikes
    Code Bronze Stealth Brake Lever Blade
    SRAM
    $35.00 $29.40
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    SRAM Code Bronze Stealth Disc Brake Set - Thunder Mountain Bikes
    SRAM Code Bronze Stealth Disc Brake Set - Thunder Mountain Bikes
    Code Bronze Stealth Disc Brake Set
    SRAM
    $205.00 $99.99
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    SRAM Level Bronze Stealth 4-Piston Disc Brake Set - Thunder Mountain Bikes
    SRAM Level Bronze Stealth 4-Piston Disc Brake Set - Thunder Mountain Bikes
    Level Bronze Stealth 4-Piston Disc Brake Set
    SRAM
    $180.00 from $89.99
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    Shimano Deore XT CS-M771 Cassette - Thunder Mountain Bikes
    Deore XT CS-M771 Cassette
    Shimano
    $80.00 $67.20

    Let customers speak for us

    from 4126 reviews
    Solid So Far

    This insert has been solid so far. I am running one in the rear tire of my Revel Tirade hardtail to allow me to run lower pressure for traction and comfort. Tire is a Conti Magnotal 29x2.6 on an Elite Wheels Gnar Trail II carbon 30mm rim. I am 165# kitted up and am able to run 14.5 psi with zero issues. I did need an extra set of hands to get the insert over the rim and the tire installed, but it wasn't too difficult. Just a 30g penalty over the Vittoria Air Liner I had been running in the previous 2.4 Magnotal.

    Rob D.
    Original V2 Tire Inserts
    fits and feels great; good venting; very

    fits and feels great; good venting; very happy

    Jonathan S.
    2026 Speedframe PRO Helmet

    Great product

    Daniel D.
    Apex V2 Headset Spacer Kit

    Perfect!

    Michael
    Dissector II Tire
    Easy Breezy and not the trail

    This kit along with a YouTube video made it super easy to bleed the Maven brakes. All the parts/tools are top shelf.

    EDventure O.
    Pro Mineral Oil Bleed Kit - V3

    Just what I needed

    Luis
    1/1 Hub Torque End Cap - 6-Bolt

    These look amazing and fit right

    Brecken
    BlackLabel 31.8mm Alloy Handlebar
    Kudos where it's due

    The products themselves work the way they are supposed to. Its ThunderMountain that gets the 5 stars for fast and reliable service. Why I keep ordering from these folks.

    john g.
    SRAM T-Type Oval Chainring

    Great experience here. Quick fix on a simple problem. I recommend this location for any mechanical bicycle issues. Thanks again! 👍

    Steve M.
    Thunder Mountain Bikes

    outstanding product. the upgrade went smoothly. Shimano makes it super simple to install on an internally routed frame with minimal air bleed. The brakes are far superior to the older Shimano brakes I had. the silver finish looks sharp on my all black carbon fiber bike.

    Anthony
    XTR BR-M9220 Brake Upgrade Kit

    Love this bike store. I rented a mountain bike from them when I was in Sedona and it couldn’t have gone better. Very helpful with local trail knowledge and recommendations. Also it was great bike and was already set up perfectly for me when I arrived. Whenever I’m searching for parts and gear, I always check Thunder Mountain first. I’ve bought several things from them online since visiting Sedona. They always seem to have what I need in stock at a good price. Shipping is fast and flawless.

    Robert M.
    Thunder Mountain Bikes

    Thanks for shipping 2nd day! You guys rock.

    Brad
    Deore XT BL-M8100 Brake Lever Blade

    Great service, great price, fast shipping with excellent tracking

    David M.
    Thunder Mountain Bikes
    Great selection of high quality products like the I9 hydra Enduro wheelset and E13 chainring I

    Great selection of high quality products like the I9 hydra Enduro wheelset and E13 chainring I ordered. Fast shipping. Solid packing and got exactly what I needed.

    ADKFlow
    Thunder Mountain Bikes
    Worked great, quick delivery

    Worked great, quick delivery

    Michael B.
    Standard DOT Disc Brake Bleed Kit V2
    2827
    78