Material: aluminium

Bearing options: Standard Bearings - These run Enduro ABEC 3 Sealed bearings

Material: Trail-proof 7 series Aluminium Alloy that is shot-peened for longevity and has a hard anodised finish to prevent corrosion

Brake Type/Fluid: As with all Shimano brakes

BOX One Prime 9 Speed Cassette - Shimano HG Splined - 11-50T - 9 Speed PDP|Option Material: aluminiumThe BOX One Prime 9 Speed Cassette is the flagship model in the range, and even though the cogs are all steel it barely tips the scales at 365 grams. This cassette will give you all the same range as your riding buddies on their 12 speed setups but you'll have to shift a whole lot less to find the right gear. Who's this item for: This is for riders that have embraced the simplicity and lighter weight of a 9 speed setup and need a cassette to run with