Pads for Alcon GT-R Superkit (RC6 / CAR70 window).
Fits: Alcon GTR Superkit 6-pot, Alcon RC6, Alcon CAR70.
What we’d fit.
Both want heat — PCR09 doesn't come in until 300°C. On a heavy car with a big brake package that's rarely a problem, but it's the wrong pad for a cold first lap.
Project Mu PCR09
Project Mu’s Club Racer. A strong trackday pad, but with a 300°C floor it is the range’s worst choice for a cold first lap.
View this padProject Mu H16-03
Project Mu’s GT and TCR-level race compound.
View this padMove to Project Mu H16-03 when you've moved from trackdays to racing.
This is TrackTheory’s recommendation for the Alcon GT-R Superkit (RC6 / CAR70 window), not manufacturer advice — a starting point based on the published figures below and what we stock, not a survey of what other competitors run. Car weight, driving style and how long your sessions are all move the answer, so tell us yours and we’ll give you a straighter one.
Same shape. Very different pads.
Every compound below bolts into the same Alcon GT-R Superkit (RC6 / CAR70 window) caliper. What separates them is operating temperature and friction — a sprint pad that needs heat in it will feel wooden on a cold first lap, and a road-biased pad will fade before the end of a long race. Figures are the manufacturers’ own published data.
Project Mu PCR09
3 options · from $366 · 1 in stockProject Mu’s Club Racer. A strong trackday pad, but with a 300°C floor it is the range’s worst choice for a cold first lap.
300–800°Cµ 0.42–0.55Needs heattrackday · circuitProject Mu H16-03
2 options · from $572 · 1 in stockProject Mu’s GT and TCR-level race compound.
200–650°Cµ 0.45–0.60Needs some heattrackday · circuitProject Mu H20
3 options · from $601A sprint and flying-lap compound used in GT and NASCAR classes.
200–800°Cµ 0.42–0.44Needs some heatsprint · circuitProject Mu H21
3 options · from $656Circuit and endurance racing. Project Mu rate it as kind to the rotor with long pad life.
200–850°CNeeds some heatcircuit · enduranceProject Mu H22
3 options · from $601The rear-axle partner to H20, H21 and H16-03, chosen for low wear.
circuit
Figures are the manufacturers’ own published data for each compound. Where a brand doesn’t publish a figure we say so rather than estimate it. From cold is our reading of each manufacturer’s published minimum operating temperature, not a separate rating they publish. Manufacturers test on their own equipment, so friction numbers are best compared within a brand rather than across brands. Not sure which suits your Alcon GT-R Superkit (RC6 / CAR70 window) setup? Ask BuildBot or email us with your car, class and typical session length.
Where this caliper turns up.
Project Mu compounds (14).
One shape, every part number.
These part numbers all share the Alcon GT-R Superkit (RC6 / CAR70 window) backing plate. The suffix is the compound (and plate thickness where the shape comes in more than one) — ask us or BuildBot which compound suits your discipline.
| Project Mu | F1380-{H16-03|H20|H21|H22} · PCR09-F1380 (Club Racer) · F1381-{16|20}-* (Alcon 6-piston) |
| Cross-references | WinmaX PBP690-16 (RC6/CAR70) |