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The Box One Prime 9 rear derailleur is Box's top of the range Prime 9 offering with all the bells and whistles
Perfect chain line with built-in offset
all in one rim
Polyurethane dual-lip seals
KS Rage-I Dropper Post - 2020 - Internal - Stealth - 31.6mm - 190mm - 535mm - None YGroup_7033444106285 The Box One Prime 9Top tier performance at a never before seen price point from KS. The longevity, smoothness, and weight of the Rage, give posts 3x the price something to worry about. Who's this for: Riders wanting a truly excellent dropper at a more affordable price than ever. Clamp options: Only available in the two leading size standards, 30. 9mm and 31. 6mm diameter. Spring and system: The Rage uses an adjustable air spring, with an open bath hydraulic cartridge.
