The SRAM PG-1210 Eagle B1 cassette brings a 12-speed, 11-50t range to 1x mountain drivetrains, spanning cogs of 11-13-15-17-19-22-25-28-32-36-42-50t. Its splined driver body interface mounts to compatible Eagle-ready hubs, giving riders a wide spread of gearing from steep climbs to fast descents without a front derailleur.
Built for Eagle chain compatibility, the cassette pairs with 12-speed Eagle drivetrains to keep shifting smooth across the full range. The smallest three cogs, 11t, 13t and 15t, are replaceable, letting riders swap out the gears most affected by e-bike speed limiters and extend overall cassette life. Cogs come finished in black.
Quick Facts
| Feature |
Specification |
| Speed |
12-speed |
| Gear range |
11-50t |
| Cog sizes |
11-13-15-17-19-22-25-28-32-36-42-50t |
| Driver body compatibility |
Splined driver body interface |
| Chain compatibility |
Eagle |