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Box Two Prime 9 Speed X-Wide Groupset

Box Two Prime 9 Speed X-Wide Groupset

11-50T X-Wide - Multi Shift
Cranks Included:
9 Speed
Suits Frame Spacing:
Suits Freehub Type:
Shimano HG
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Rated 5.0 out of 5 stars
1 Review

Regular price $284.95
Regular price $465.00 Sale price $284.95
Tax included.


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The Prime 9 range of components from Box has made many people rethink what a 9-speed drivetrain is capable of. Box Two is their most durable drivetrain that offers excellent performance, durability, and a competitive weight at a wallet-friendly price point.

Who's this item for: This is for riders looking for all the same range as a 12-speed setup with the simplicity and weight savings of a 9-speed setup. 9-speeds are great for All Mountain style riding but may not appeal to XC racers or those that like to be able to maintain a steady cadence which shifting between gears.

Compatibility All Prime 9 components are cross-compatible with other levels across the range. All of these components can be purchased separately if you want to mix and match with other Box Prime 9 parts.

Works with 10,11, or 12-speed Shimano, SRAM, and most other brands' narrow/wide chainrings (you must use a Prime 9 chain).

E-bike friendly: Yes, The Box Two Prime 9 components are suitable for use on e-bikes when used with the single-release shifter.

The multi-release shifter is not suitable for use on e-bikes.

Each Box Two groupset includes the following components:

  • Box Two Prime 9 Speed Twin Lever Shifter
  • Box Two Prime 9 Speed X-Wide Derailleur
  • Box Two Prime 9 Speed Chain
  • Box Two Prime 9 Speed 11-50t Cassette

Rear derailleur Specifications:

  • Number of gears: 9 speed
  • Weight: 290g
  • Materials: Constructed from both hardened alloy steel and stainless steel with a matte onyx finish
  • Chain and cassette compatibility: Compatible with Prime 9 chains and cassettes.
  • Max cassette range: 11-50t
  • Clutch style: Tri-pack limited-slip clutch. Non-adjustable
  • Cage length: Available in one length only. It would be a long cage to enable the jump up to the 50t

Compatible with standard derailleur hangers only (not compatible with Direct-Mount hangers)

Shifter / Remote Specifications:

  • Number of gears: 9 speed
  • Trigger action: Single or multi-shift depending on the option selected.
  • Weight: 135g
  • Materials: Glass fibre, nylon composite, steel, aluminium alloy.
  • Mount style: Hinged 22.2mm bar clamp.
  • Shifter cable: Comes with a stainless steel shifter cable included.

Chain Specifications:

  • Number of gears: 9 speed
  • Compatible with 10,11, or 12-speed Shimano, SRAM, and most other brands' narrow/wide chainrings.
  • Weight: 350g
  • Materials/Construction: Constructed from hardened alloy steel with a nickel-plated finish. Pins are solid hardened steel.
  • Quick joining link: Yes, a quick link comes included with the chain.
  • Number of links: 126 links

Cassette Specifications:

  • Number of gears: 9 speed
  • Weight: 645g
  • Materials/Construction: Stamped steel cogs with the largest pinned to a lightweight alloy carrier.
  • Cog-tooth span: 11 - 13 - 15 - 18 - 22 - 28 - 34 - 42 - 50t
  • Freehub mounting style: Shimano style HG only
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Rated 5.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
1 review
  • Michael H.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    12 seconds ago
    Think outside the box

    There aren’t too many choices beyond the big-2. Box is one such choice. Based on first ride only, the gearing choices are really good and the shifting action is better than the price might suggest. I’m really impressed.

    It looks good. It feels good. Installation was easy. If it holds up to use then it will be 100% successful.

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