Pads for Mazda RX8 front.
Fits: Mazda RX8 front caliper (DB1513 / FCP1758 window).
What we’d fit.
The RX8 carries speed and leans on the front hard. W5 covers most club racing. M119 publishes close to 0.5 friction from a 50°C floor, which is the reason to choose it over a hotter-but-lazier compound for short events.
WinmaX W5
WinmaX’s standard circuit model, and the default club racing and rally choice in the range.
View this padCirco M119
Circo’s sprint answer: around 0.5 friction from 50°C, so it works before the pads are hot. Rally and circuit.
View this padMove to Circo M119 when you're sprinting or hillclimbing and need bite before the pads are hot.
This is TrackTheory’s recommendation for the Mazda RX8 front, 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 Mazda RX8 front 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.
WinmaX W5
1 option · from $321 · 1 in stockWinmaX’s standard circuit model, and the default club racing and rally choice in the range.
100–750°Cµ 0.40–0.43Usable from coldcircuit · trackday · sprint · rallyWinmaX W3
1 option · from $268 · 1 in stockWinmaX call this their most versatile pad: sportive street through to sprint racing. It is the W-series compound we stock most of.
0–650°Cµ 0.34–0.37Strong from coldstreet · trackday · sprint · hillclimbProject Mu HC-EP
1 option · from $263 · 1 in stockA street-plus-track compound, effectively HC+ tuned toward road use.
0–600°Cµ 0.43–0.58Strong from coldstreet · street+trackProject Mu NS-EP
1 option · from $127 · 1 in stockProject Mu’s street pad, sold as NS400 in some markets — fade and wear resistance with a fine pedal feel.
0–400°Cµ 0.37–0.40Strong from coldstreetCirco M207
1 option · from $495The highest peak friction and highest peak temperature Circo publish — professional circuit racing, and it needs 250°C to come in.
250–920°Cµ 0.45–0.56Needs heatcircuit · enduranceCirco M207E
1 option · from $653The endurance version of M207, aimed at 12-hour-plus races.
150–900°Cµ 0.42–0.49Needs some heatendurance · circuitWinmaX W7
1 option · from $433The top of the W-series — professional circuit and rally use, and the highest friction WinmaX publish.
100–850°Cµ 0.48–0.53Usable from coldcircuit · rally · enduranceCirco M119
1 option · from $429Circo’s sprint answer: around 0.5 friction from 50°C, so it works before the pads are hot. Rally and circuit.
50–800°Cµ 0.48–0.51Usable from coldrally · circuit · sprintProject Mu HC+
1 option · from $347The street-and-track all-rounder: usable from cold and rated to 800°C, which is why it suits sprints with no warm-up lap.
0–800°Cµ 0.43–0.58Strong from coldstreet · street+track · trackday · sprintProject Mu PCR09
1 option · from $359Project 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 · circuitCirco S99
1 option · from $382Entry-level racing and 2WD rally, working from cold up to 700°C.
100–700°Cµ 0.40–0.43Usable from coldcircuit · rallyProject Mu H16-03
1 option · from $622Project Mu’s GT and TCR-level race compound.
200–650°Cµ 0.45–0.60Needs some heattrackday · circuitWinmaX W1
1 option · from $227WinmaX’s street compound — quiet and low dust, and explicitly not intended for track use.
0–500°Cµ 0.29–0.32Strong from coldstreetCirco SC17
1 option · from $265The mildest pad in the Circo range — street and 4WD use.
0–490°Cµ 0.32–0.35Strong from coldstreet · 4x4Project Mu NS-C
1 option · from $197A street compound focused on low dust and low noise.
0–400°Cµ 0.34–0.38Strong from coldstreet
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 Mazda RX8 front setup? Ask BuildBot or email us with your car, class and typical session length.
Where this caliper turns up.
WinmaX compounds (4).
Project Mu compounds (6).
Project Mu HC-EP Street Brake Pads Mazda RX8 front (F445-HC-EP)
Project Mu NS-EP Street Brake Pads Mazda RX8 front (F445-NS-EP)
CIRCO Brakes compounds (5).
One shape, every part number.
These part numbers all share the Mazda RX8 front 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.
| WinmaX | WMP602-{W1|W3|W5|W7} |
| Circo | MB1224-{M119|M207|M207E|S99|SC17} |
| Project Mu | F445-* |
| Cross-references | DBA DB1513 · Ferodo FCP1758 |







