With the JEFFco Planetary Transmission we recommend the Mcleod Street Twin, Borg & Beck style for street strip applications. For drag race only a single sinter iron disc on a B&B counterweight finger is a good choice.

The Street Twin unit fits inside the STD Lakewood scatter shield @ 6 3/8 depth. Its holding power is good to 1000 Hp. It also has counterweight features for more clamping. We do not use the diaphragm style.

We also stay away from hydraulic throw out bearings because some don’t give the feel when letting out the clutch. We do recommend a line loc for drag starts. The clutch should be loaded, this protects the sprags!