SKU:CP6278-2S7MP
AP Racing
AP Racing CP6278 4-Piston Billet Radi-CAL Rear Caliper (Ø355mm Disc)
AP Racing CP6278 4-Piston Billet Radi-CAL Rear Caliper (Ø355mm Disc)
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Description
Description
A four-piston race caliper from AP Racing for GT and endurance rear axles: an anodised billet monobloc aluminium body, radial mounting on 180mm centres and Ø355mm iron (32mm) or carbon (35mm) discs. Sold per caliper with titanium pistons, right or left hand.
- 4 pistons (Ø28.6mm x 2, Ø36.0mm x 2), 33.2cm² piston area
- Anodised billet monobloc aluminium body, Radi-CAL design, ducted air cooling
- Radial mount, 180mm centres
- Ø355mm iron (32mm) or carbon (35mm) discs
- Titanium pistons
Check before you order
- Priced per caliper: one axle needs a right-hand and a left-hand caliper.
- This is the caliper on its own: discs and mounting brackets are not included.
- Trailing calipers only (mounted behind the axle): right-hand (RHT) or left-hand (LHT).
| Part numbers | CP6278-2S7MP RHT, -3S7MP LHT (titanium pistons) |
|---|---|
| Range | GT range: billet Radi-CAL rear, 4-piston |
| Piston sizes | Ø28.6mm x 2 and Ø36.0mm x 2 |
| Piston area | 33.2cm² |
| Use | GT / endurance, rear |
| Body | Billet monobloc aluminium alloy, anodised |
| Mounting | Radial, 180mm centres |
| Discs | Ø355mm; iron 32mm or carbon 35mm thick |
| Mounting offset | 42.0mm |
| Mounting hole | 12.15mm |
| 'PL' dimension | 63.5mm |
| Weight (no pads) | 1.9kg |
| Hydraulic thread | M10x1.0 |
| Bleed screw torque | 17Nm |
| Brake pad (iron) | CP6070D49 (iron): area 61.6cm², depth 49.0mm, thickness 25.0mm |
| Cooling | Ducted air cooling (lower caliper temperatures) |
| Pistons | Titanium (to suit a 25mm thick pad) |
| Seal repair kit | CP4518-DH |
| Spare pistons | Ø28.6mm CP6278-104, Ø36.0mm CP6278-105 |
| Part number 'S7' | S7 in the part number: side feed inlet, 7 lb anti-knockback spring |
Fitting notes
- Bleed screws must be at the top.
- The disc must pass the smaller piston first (differential bore calipers).
- AP Racing say brake parts should only be fitted by people experienced in fitting disc brake systems.
- AP Racing: calipers that regularly run at up to 180°C should be re-sealed every other event; from 180°C to 220°C and above, re-seal as soon as possible.
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