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.

Features:

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.

Features:

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.

Features:

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.