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Box One Prime 9 X-Wide Rear Derailleur
The cassette's 11-50T range is equally impressive but we don't cut it out of a single block of steel
Box Four 8 Speed 11-42T Cassette
Lockring & Cogs replacement for Box Four Ebike cassettes
Box One Prime 9 Chain 126L DLC
Box Two P9 X-Wide Single Shift E-Bike Groupset drivetrain Box One Prime 9 X-WideOur Box Two tier's mission in life is to deliver performance similar to the Box One but without its exotic (and costly) features. With the Single Shift E Bike Groupset you still get the Tri Pack Clutch in our derailleur only it isn't adjustable. The cassette's 12 50T range is optimized for E Bikes. The action on the shifter is limited to one downshift per lever swing. The chain boasts the same unique ability to mate with a wide narrow chainring except
