BOX  Two Prime 9 E-Bike Cassette

Members, log in and use coupon code ANNIV24 at checkout to save 20% on this item thru 5/27. Exclusions apply.
Color: Black
Size: 12-50 T
Shipping restrictions apply.

Members get an estimated $11.00 (10%) back on this item as a part of your annual .

Members get an estimated $11.00 (10%) back on this item.
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Built to withstand the rigors of e-bike riding, the BOX Two Prime 9 e-bike cassette is built with high gears that have more teeth and offers the range of a 12-speed without the added complexity.


  • BOX Prime 9 technology offers the same range as a 12-speed drivetrain with fewer gears to shift through, reducing parts and weight while increasing durability
  • Adding an extra tooth to each of the 3 highest gears provides increased durability and decreased wear by distributing the load over a larger area
  • All cogs are stamped from steel; larger cogs are pinned to lightweight alloy spiders
  • Offers ultrawide ratio with consistent progressions
  • ED Black finish delivers extra protection from the elements


View the BOX Prime 9 Product LineView all BOX Bike Cassettes

Technical Specs

Item #225254
Best Use

Mountain Biking





Compatible Freehub

Shimano Hyperglide (HG)


645 grams

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