M-pulse freehubs are precision machined and include the hub shell seal, pre-installed pawls with magnets, pawl retainer, freehub shield, 1.8mm cassette spacer, double-row Enduro 3803 17x26x10mm bearing, Enduro 6802 15x24x5mm bearing, and freehub spacer.

Fits all M-pulse rear hubs. Not compatible with E-sync, Neo, Neo Ultimate, and 3.30 hubs.