New updated drum, now with stronger bolts and borgwarner clutches!
The Sonnax O/D Drum adds 16% more holding power over the factory drum.
It replaces the thin single sided clutches, with a thicker dual sided clutch and kolene steel, which handle heat and stress better than factory.
The Sonnax O/D Drum is currently the only thing holding up to added power in the 68's, most of the "big name builders" have switched to using it or have started adding it to their "kits".