Ride anywhere with the wide-range PG-1230, 11- to 50-tooth Eagle™ cassette. The NX cassette gives riders every bit of the climbing range that the Eagle™ ecosystem affords with a simple upgrade to splined-drive body wheels. The PG-1230 is the only Eagle™ cassette designed to be durable enough to withstand the increased demands of E-MTB applications and a perfect solution to heavy-duty use and abuse. Features - PG-1230 NX Eagle 12-speed Cassette 11-50 Compatible with a splined driver body Eagle™ technology provides an expanded, optimum, gear range making you fast on the flats, giving you control on the climbs and unleashing your speed on the descents Wide 11-50t gear range - a perfect fit for any ride. Optimized gear steps across entire range The PG-1230 is the only Eagle™ cassette that meets Sram´s durability requirements for E-MTB applications Product features Use: MTB, E-MTB Group: NX Eagle Gears: 12-speed Compatibility: All levels of Eagle™ drivetrain systems Recommended chain: Eagle™ chain Cogs: 11, 13, 15, 17, 19, 22, 25, 28, 32, 36, 42, 50 Material steel Color black