Pads for AP CP5200 family / Brembo 4-pot B52 (D50).

1. Circo M207

   5 options · from $646 · 2 in stock

   The 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 · endurance

2. Circo M119

   1 option · from $508 · 1 in stock

   Circo’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 · sprint

3. WinmaX W6.5

   1 option · from $494 · 1 in stock

   The 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 · circuit

4. WinmaX W3

   1 option · from $362 · 1 in stock

   WinmaX 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 · hillclimb

5. Circo M220

   1 option · from $869

   A GT endurance compound for 12-hour-plus racing.

   200–900°Cµ 0.37–0.41Needs some heatendurance · circuit

6. Circo M127

   1 option · from $508

   Sprint and time-attack. More outright bite than M119, but it wants heat in it first.

   150–850°Cµ 0.45–0.55Needs some heatsprint · circuit

7. WinmaX W7

   2 options · from $508

   The 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 · endurance

8. WinmaX W5

   1 option · from $405

   WinmaX’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 · rally

9. Circo M192

   1 option · from $1009

   An endurance rear pad developed for GT3 and GT4 machinery.

   100–750°Cµ 0.37–0.41Usable from coldendurance · circuit

10. Circo S99

    1 option · from $409

    Entry-level racing and 2WD rally, working from cold up to 700°C.

    100–700°Cµ 0.40–0.43Usable from coldcircuit · rally

11. WinmaX W4

    1 option · from $376

    Sprint and entry-level motorsport, with a low enough floor to still behave on a cold first lap.

    50–700°Cµ 0.37–0.40Usable from coldsprint · trackday · circuit

12. Circo S88

    1 option · from $381

    Street and entry-level trackday use — the step up from S83.

    0–650°Cµ 0.38–0.40Strong from coldstreet · trackday

13. Circo S83

    2 options · from $381

    Entry-level track work and rear-axle duty, usable from cold.

    0–600°Cµ 0.32–0.36Strong from coldstreet · trackday · circuit

14. WinmaX W1

    1 option · from $296

    WinmaX’s street compound — quiet and low dust, and explicitly not intended for track use.

    0–500°Cµ 0.29–0.32Strong from coldstreet

15. Circo SC17

    1 option · from $317

    The mildest pad in the Circo range — street and 4WD use.

    0–490°Cµ 0.32–0.35Strong from coldstreet · 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 CP5200 family / Brembo 4-pot B52 (D50) setup? Ask BuildBot or email us with your car, class and typical session length.