Sram: START WITH EAGLE™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.THINGS TO REMEMBER• 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.• Eagle™ is a complete drivetrain system that was developed to be an integrated high-performance ecosystem. The engineering and testing that went into the development provide for maximum performance, safety, and long-term durability to ensure a great consumer ride experience. We guarantee this performance when Eagle™ drivetrains are used as a complete ecosystem. For additional information, please contact your SRAM Sales Contact.• The PG-1230 is the only Eagle™ cassette that meets our durability requirements for E-MTB applications.FEATURES AND BENEFITS• Compatible with a splined driver body.• This PG-1230 cassette is an integral part of the SRAM Eagle™ drivetrain Ecosystem.• Wide 11-50t gear range—a perfect fit for any ride. Optimized gear steps across entire range.SPECIFICATIONSSpeed (CS):  12sGearing:  11-50tCog finish (Cassette):  BlackTechnology (Cassette):  PGCog sizes:  11-50t:11,13,15,17,19,22,25,28,32,36,42,50