Fitment
Will this fit?
Fitment data still being indexed for this product. Ask BuildBot for a fit-check against your vehicle.
The compound
Project Mu PCR09.
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.
Operating range300–800°C
Friction µ0.42–0.55
Cross-brand equivalents
Run something similar.
These are the compounds we stock for the AP Racing 4-pot RD42 (CP3215 D40/D42) 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 close50–800°Cµ 0.48–0.51
Circo’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 $508Compare every compound for the AP Racing 4-pot RD42 (CP3215 D40/D42)
Fits the same caliper
More pads for the AP Racing 4-pot RD42 (CP3215 D40/D42).
Pairs well with
