Fitment
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Fitment data still being indexed for this product. Ask BuildBot for a fit-check against your vehicle.
The compound
WinmaX W4.
A step up from W3 for sprint and entry-level motorsport, with a 50°C floor that keeps it usable on a cold first lap and a 700°C ceiling that survives a short race. It sits in the gap between the versatile road-and-track W3 and the full circuit W5.
Operating range50–700°C
Friction µ0.37–0.40
Cross-brand equivalents
Run something similar.
These are the compounds we stock for the Alcon B-type / AP D49 / Brembo B13 whose published friction and operating temperature come closest to WinmaX W4. They are a starting point for switching brands — not a guarantee of identical feel, because each manufacturer measures friction on their own equipment.
Project Mu H21
Partial match200–850°C
Circuit and endurance racing. Project Mu rate it as kind to the rotor with long pad life.
Matched on published operating temperature only — one of the two brands doesn’t publish a friction figure, so this is a weaker comparison.
From $572Compare every compound for the Alcon B-type / AP D49 / Brembo B13
Fits the same caliper
More pads for the Alcon B-type / AP D49 / Brembo B13.
Pairs well with
