Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®
Box Two Prime 9 11-50T Cassette Black - Box®

Box Two Prime 9 11-50T Cassette

$144.00 Sale Save
Size 11-50T
Color Black

Only 0 left in stock

SKUBX-CS2-P9A1150-BK

The Box Two cassette was where Prime 9 started. Originally conceived as an E-MTB product to deliver long service life and extra range over fewer gears, we quickly grew to enjoy its abilities on unpowered MTBs. All cogs are stamped from steel and subsequently, the larger ones are pinned to alloy spiders. Due to its provenance, this is, without doubt, the most durable cassette in the range.



Please see 
page 6 of our guide for notes regarding the 2 HG drivers.

Our Most Durable Cassette
Steel Stamped Cogs
Lightweight Alloy Spiders
Ultra-Wide Ratio with Consistent Progression
ED Black Protection
Cassette Compatible with HG Freehub Bodies

Box One Prime 9 Chain 126L DLC Black
Box Two Prime 9 126 Link Chain Nickel
Box Three Prime 9 126 Link Chain Polished
Box One Prime 9 Rear Derailleur
Box Two Prime 9 X-Wide Rear Derailleur Black
Box Three Prime 9 X-Wide Rear Derailleur Black
Box One Prime 9 Shifter Black
Box Two Prime 9 Shifter Black
Box Three Prime 9 Shifter Black

Material Hardened Alloy Steel, Aluminum
Finish ED Black
Gears 11 - 13 - 15 - 18 - 22 - 28 - 34 - 42 - 50
Weight 645g/22.7oz

Q: What is the difference between the Wide and X-Wide?
A: The Wide cassette offers an 11-46T range while the X-Wide offers an 11-50T range.

Will the Box Two Prime 9 Cassette fit on an wheel with a Sram XD Driver?
No this will only work with a HG splined Shimano 9-10-11 speed freehub body

Is the Box Two Prime 9 Cassette compatible with other 9 speed drivetrains?
No, The Box Two Prime 9 Cassette is optimized for Box Prime 9 drivetrains and running other component variations can result in poor performance.

How should I clean my Two Prime 9 Cassette?
We suggest removing the cassette from the wheel and using a soft bristle brush with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.

Will Box be making cassettes compatible with XD or Microspline driver bodies?
At this time our cassettes are only compatible with HG style MTB 8/9/10 speed or road 11 speed driver bodies. Most hub manufacturers offer the different