Pads for AP Racing 6-pot RD54 (with tab).
Fits: AP Racing 6-piston RD54 family (CP5555/CP9660 pattern, D54 radial depth, tab), AP CP3894 D54, AP CP3558 D54.
What we’d fit.
A six-pot on this plate is usually on a serious car. H16-03 covers GT and TCR-level use. M207 publishes the highest peak temperature and friction of anything we stock, but needs 250°C to come in — it's the wrong pad for short sprints.
Project Mu H16-03
Project Mu’s GT and TCR-level race compound.
View this padCirco M207
The highest peak friction and highest peak temperature Circo publish — professional circuit racing, and it needs 250°C to come in.
View this padMove to Circo M207 when you're running long races and cooking what you have now.
This is TrackTheory’s recommendation for the AP Racing 6-pot RD54 (with tab), 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 AP Racing 6-pot RD54 (with tab) 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.
Circo M207
4 options · from $646 · 1 in stockThe 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 · enduranceWinmaX W7
1 option · from $508 · 1 in stockThe 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
6 options · from $508 · 3 in stockCirco’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 H16-03
4 options · from $572 · 3 in stockProject Mu’s GT and TCR-level race compound.
200–650°Cµ 0.45–0.60Needs some heattrackday · circuitCirco M207E
1 option · from $898The endurance version of M207, aimed at 12-hour-plus races.
150–900°Cµ 0.42–0.49Needs some heatendurance · circuitCirco M220
1 option · from $1009A GT endurance compound for 12-hour-plus racing.
200–900°Cµ 0.37–0.41Needs some heatendurance · circuitCirco M127
2 options · from $508Sprint and time-attack. More outright bite than M119, but it wants heat in it first.
150–850°Cµ 0.45–0.55Needs some heatsprint · circuitProject Mu H20
7 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 PCR09
6 options · from $282Project 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 · circuitWinmaX W6.5
4 options · from $494The 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.
50–800°Cµ 0.47–0.50Usable from coldrally · sprint · hillclimb · circuitWinmaX W5
3 options · from $405WinmaX’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 · rallyCirco S99
2 options · from $409Entry-level racing and 2WD rally, working from cold up to 700°C.
100–700°Cµ 0.40–0.43Usable from coldcircuit · rallyWinmaX W3
2 options · from $362WinmaX 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 · hillclimbCirco S88
2 options · from $381Street and entry-level trackday use — the step up from S83.
0–650°Cµ 0.38–0.40Strong from coldstreet · trackdayWinmaX WP2
1 option · from $362Built for 4WD towing and high-GVM work rather than circuit racing.
0–600°Cµ 0.36–0.39Strong from cold4x4 · towing · streetDBA XP
1 option · from $214DBA’s Xtreme Performance pad — 0.45 average friction, consistent to 550°C. Street, club track days and heavy towing.
DBA recommend this pad on their 4000 and 5000 Series rotors, with T3 slotted for best performance.
µ 0.45street-performance · club-track-day · police-pursuit · 4wd-towingWinmaX W1
1 option · from $296WinmaX’s street compound — quiet and low dust, and explicitly not intended for track use.
0–500°Cµ 0.29–0.32Strong from coldstreetProject Mu H21
9 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 H21-07
1 option · from $890An endurance compound developed for GT and Porsche one-make racing.
200–850°CNeeds some heatcircuitProject Mu H22
9 options · from $601The rear-axle partner to H20, H21 and H16-03, chosen for low wear.
circuitWinmaX RS336
1 option · from $797A low-volume compound WinmaX publish no figures for. Ask us before ordering.
circuit · sprintWinmaX WP
1 option · from $344A 4WD and towing compound. WinmaX publish no friction or temperature figures for it.
4x4
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 AP Racing 6-pot RD54 (with tab) setup? Ask BuildBot or email us with your car, class and typical session length.
Where this caliper turns up.
Project Mu compounds (36).
CIRCO Brakes compounds (18).
WinmaX compounds (14).
DBA compounds (1).
One shape, every part number.
These part numbers all share the AP Racing 6-pot RD54 (with tab) 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 | WMP819-16-{W3|W5} · WMP819-18-{W1|W5|W6.5|W7} · WMP819SN-18-{W3|W5|W6.5|WP2} · WMP819SN-{24.5|25}-W6.5 · WMP819SN-25-RS336 |
| Circo | MB1658SN-{16|17|18}-* (M119/M127/M207/S88/S99) · MB1658SN-{24.5|25|26}-* (M119/M207/M207E/M220 endurance) |
| Project Mu | F1090-16/18/20/25/28-{H16-03|H20|H21|H22} (AP Racing D54; CP3894D54, CP3558D54 named) |