TRE small and lightweight chain drive differential.  Integrates TRE-specific Quaife internals in a Torsen-type limited slip diff.  Preload and viscous locking behavior can be modified with shims, springs, and fluid.

Fits in Firman RFR F1000 cars, using a steel center housing.  FSAE version assembled with lightweight aluminum center housing. 

Similar to the TRE Mk2 differential but with different bearing arrangement.  Available in 2 sprocket mounting bolt pattern options: 8x 10mm on a 133mm bolt circle for RFR F1000 or 6x 3/8” on 5.5” bolt circle.

Outputs can be customized in 3 ways: small tulips for FSAE tripods, large tulips for 30mm tripods, or drive flanges that bolt to 86mm or 94mm CV and tripod housings.  

When ordering contact us to request specific output options as well as sprocket mounting pattern.  

Pictures show 2 with small tulips, one without any output pieces, and one with RFR F1000 mounting plates.  Please contact us to order custom setups with mounting plates to fit your car.

Download Packaging Model here (with small tulips)

Information PDF