PFC Slotted Replacement Rotor - Left - Late Model/Modified - 299.20.0045.01 Vehicle Model_E46 M3 w/PFC Rotors while the strap-less design uses

while the strap-less design uses an elastic wrist band for increased comfort

Designed to keep the driver as low as possible

but in a smaller package for the up and coming racers

The PFC V1 Replacement Rotor (Part #318

PFC Slotted Replacement Rotor - Left - Late Model/Modified - 299.20.0045.01 Vehicle Model_E46 M3 w/PFC Rotors while the strap-less design usesHigh performance slotted left side rotor (PFC 299. 20. 0045. 01) built for Late Model and Modified racing. Precision machined slots enhance pad bite and heat management, while high carbon alloy construction ensures strength, stability, and fade resistance in the most demanding race conditions.