Consistent rear bite for the RX8 without the fade that ends sessions early.
Fitment data still being indexed for this product. Ask BuildBot for a fit-check against your vehicle.
Budget pads on a rotary car are a false economy — the RX8's rear bias demands a compound that holds its bite lap after lap, not just on the out-lap. The RC09 is engineered for exactly that duty cycle, with stable modulation from cold street temps through full track operating range. At $330 it sits well below full race-spec pricing while delivering the consistency that matters on a timed day.
The Club Racer, and Project Mu’s trackday compound. It runs 300–800°C with 0.42–0.55 friction, and Project Mu state plainly that it is not for street use. The 300°C floor is the highest of anything we stock, so it is a strong pad once hot and the worst choice in the range for a cold first lap.
These are the compounds we stock for the Mazda RX8 rear whose published friction and operating temperature come closest to Project Mu PCR09. They are a starting point for switching brands — not a guarantee of identical feel, because each manufacturer measures friction on their own equipment.
Circo M119
Very closeCirco’s sprint answer: around 0.5 friction from 50°C, so it works before the pads are hot. Rally and circuit.
Matched on published friction and operating temperature.
From $429WinmaX W6.5
Very closeThe standout for sprints and hillclimbs: close to 0.5 friction from a 50°C floor, so it bites on lap one. WinmaX call it their best rally pad.
“The bite is there from the first stop, and it stays there.”
Matched on published friction and operating temperature.
WinmaX W7
Very closeThe top of the W-series — professional circuit and rally use, and the highest friction WinmaX publish.
Matched on published friction and operating temperature.
From $433