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    • Box Two-Three Prime 9 X Wide MTB Groupset

  • Box Two-Three Prime 9 X Wide MTB Groupset

    All set for hitting your favourite local trails, this groupset is available as a Single Shift option for electric mountain bikes (E-MTB) and a Multi Shift option for mountain bikes (MTB). Combining four trail-ready components from Box's Two and Three range, this model is simple to set up and allows you to upgrade your existing drivetrain for functional and intuitive shifting performance wherever your next adventure takes you.

    Did you know that you can mix and match Prime 9? Can't decide between the modern basics of Box Three and the long service life of Box Two? Well, you don't need to! With this pre-configured and pre-tested option, you'll receive a Box Three cassette paired to the durable Box Two derailleur, shifter and chain.

    Box Three Prime 9 Cassette 11-50T

    The Box Three cassette draws from both of its Box One and Box Two siblings to create a sensible all-rounder. All cogs are stamped from steel. The main difference here versus Box Two is the use of additional weight-reducing holes on the cogs. This X-Wide version offers an 11-50T range.


    • Material: Aluminium, Cold Rolled Steel
    • Finish: ED Black
    • Gear Ratio: 11-50T
    • Gears: 11 - 13 - 15 - 18 - 22 - 28 - 34 - 42 - 50
    • Box Component's Best All-Rounder Cassette
    • Steel Stamped Cogs
    • Ultra-Wide Ratio with Consistent Progression
    • Prime 9 Technology
    • Compatible with HG Freehub Bodies
    • Weight: 660g

    Box Two Prime 9 Chain 126L

    The Box Two chain's nickel plating adds both corrosion and wear-resistance. All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability. The unique inner link spacing is engineered to grab those modern wide/narrow chainrings. Box chose to modernise the 9-speed platform due to the chain's spirited reputation.


    • Material: Hardened Alloy Steel
    • Finish: Nickel
    • Box Component's Most Durable Chain
    • Nickel Plated Protection
    • Durable Hardened Solid Pins
    • Wide/Narrow Chainring Compatible
    • Compatible with most 10,11, & 12-speed wide / narrow chain rings
    • Prime 9 Technology
    • Weight: 305g

    Box Two Prime 9 Shifter (Select Option)

    The Box Two shifter is the only shifter on the market (other than the Box One) that comes factory stock with a hinged clamp. Box Two is performance tier, so this shifter still maintains the durable cast aluminium top shell but trades out the Box One's 1-piece pull-lever for a 2-piece resin and steel variant. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up. Available as a multi-shift option (pull several gears at once) or single-shift shifter option (a sound choice for e-bikes). Please select the option from the menu to suit your bike.


    • Material: Glass Fibre / Nylon Composite, Steel, Aluminium Alloy
    • Finish: Matte Onyx
    • Hinged and Extruded Clamp
    • 2 pc Pull Lever / Up to 3 Gears Per Shift* (Multi Shift Option)
    • Die Cast Top Shell
    • Fast Action Release Lever
    • Prime 9 Technology
    • Multi Shift Option Not Intended for E-Bike Use
    • Single Shift Option Recommended for E-Bike Use
    • Weight: 135g

    Box Two Prime 9 X-Wide Rear Derailleur

    The Box Two Prime 9 Rear Derailleur is very similar to the Box One version however, to be more wallet-friendly, it offers a nonadjustable Tri-Pack Clutch, bushing pulleys and some muted finishes. Box Two rear derailleurs are still optimised for 11-50t cassettes and offer durability and performance for the most demanding terrain, just at lower price.


    • Material: Stainless Steel, Hardened Alloy Steel
    • Finish: Matte Onyx
    • Tri-Pack Limited Slip Clutch
    • Sealed Bushings Pulleys
    • Nylon Composite Knuckle
    • Pivot-Tech Cable Stay
    • Durable 3D Forged Linkages
    • Forged Inner and Outer Cage
    • Prime 9 Technology
    • Compatible with Standard Derailleur Hangers (Non Direct-Mount)
    • Weight: 290g

    Manufacturer's Part Numbers:

    • BX2PR9GRP03 Black Single Shift
    • BX2PR9GRP04 Black Multi Shift


    • Couleur : Noir
    • Taille : 126L
    • Option: Multi Shift, Single Shift
    • Nombre de Dents: 11-50t



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