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    • Box Four 8 Speed MTB Drivetrain Groupset

  • Box Four 8 Speed Drivetrain Groupset

    Ready for blasting across the MTB trails, this 8 speed groupset delivers smooth and reliable performance on every mountain bike ride. It is designed for riders who want less fuss and features an 8 speed shifter and an 11-42T cassette, which offers a great range of gearing to meet the demands of your off-road adventures. Designed for smooth operation, its rear mech uses a Limited Slip clutch in a compact cage. A final highlight is its custom 8 speed chain that's built for abuse. This makes it a great groupset for riders that want strong groupset without all the frills and at a wallet-friendly price.

    Box Four 8 Speed Shifter

    The Box Four shifter's main features aren't strikingly different from Box Three's. The key difference is its 8-speed platform. We've chosen to modernize the 8-speed in much the same way we did the 9-speed for Prime 9. Just like the Prime 9, the Box Four shifters take advantage of the "less is more" theme and exploit durability, simplicity, and reliability.


    • Material: Glass Fibre / Nylon Composite, Steel
    • Extruded Clamp
    • 2 Piece Pull Lever / Up to 3 Gears Per Shift
    • Resin Top Shell
    • Fast Action Release Lever
    • Not Intended for E-Bike Use
    • Weight: 128g

    Box Four 8 Speed Wide Rear Derailleur Black

    The Box Four Rear Derailleur is the base of Prime 9 Technology that offers an affordable clutch based 1 by 8-speed derailleur that is simple and light; this makes it a perfect candidate for every entry-level bike that traditionally has a 3 by drive-train that is neither durable nor user friendly.


    • Material: Aluminium, Glass Fibre / Nylon Composite, Steel
    • Limited Slip Clutch
    • Bearing Pulleys
    • Nylon Composite Knuckle
    • Direct Channel Cable Stay
    • Die-Cast Linkages
    • Stamped Inner and Outer Cage
    • Compatible with Standard Derailleur Hangers (Non Direct-Mount)
    • Weight: 328g

    Box Four 8 Speed 11-42T Cassette

    The Box Four cassette adapts our Prime 9 philosophy of durability, simplicity, and reliability at a great price point. All cogs are stamped from steel, given our durable black coating and then the larger cogs are pinned to each other with spacers for easy installation.


    • Material Cold Rolled Steel
    • Steel Stamped Cogs
    • No Spiders
    • Wide Ratio & Consistent Progression
    • ED Black Protection
    • Compatible with HG Freehub Bodies
    • Not Intended for E-Bike Use
    • Weight: 473g

    Box Four 8 Speed 116 Link Chain Natural

    The Box Four chain employs an 8-speed platform in a similar strategy to the Prime 9 but at a great price point. The chain is polished and then chemically treated to achieve corrosion resistance. We engineered the inner link spacing to be a little tighter than other 8-speed chains and is optimized for use with our Box Four Wide/Narrow Chainring.


    • Material: Hardened Alloy Steel
    • Durable Hardened Solid Pins
    • Wide/Narrow 8 speed Specific
    • Weight: 364g

    Buy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.


    • Cor: Preto
    • Tamanho: Multi Shift, Single Shift
    • Opção: 1
    • Dentes: 11-42t
    • Velocidade: 8 Velocidades



  • POUPE 17%
    PRR $193.49
    $161.49 161.49
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