Freehub body B2 type (B627), Sram XDR for UPGRADE with fast engagement 2×3 pawls in angle 6.66°, 12speed, alloy 6-pawls, w/oil seal, w/inner spacer, ROAD type, 3 x sealed NBK bearings #15267, OEM
Cassette body type: Sram XDR
Cassette body compatibility: B2
Freehub body material: Alloy