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McLAREN

Learn more about how RB caliper components are made.

Model Year Front Rear

570S (650S, 675LT, 12C) CCB Rotors

11-17

MC-61 (27.0/31.8/38.1x30)

CP7705 - Rotor size 394x36mm

MC-41 (31.8/36.0x32) Piston=MC44, Pad=MC43

CP7545 - Rotor size 380x34mm

720S (750S, 600LT, GT) CCB Rotors
2017+

MC-62=MC-61 (27.0/31.8/38.1x30)

CP7715 - Rotor size: 390x36mm

 

MC-42 (31.8/36.0x30)

CP7716 - Rotor size 380x34mm

765LT (Senna) 2021+ 

MC-63=MC-61 except piston ht (27.0/31.8/38.1x34)

Boots & Seal kits only (Piston ht 34mm N/A)

Rotor Size 390x36mm

CP7705

 

MC-43=MC-42 (31.8/36.0x30)

Same as CP7716 except w/5mm longer legs for 390x34mm rotor

 

570S (650S, 675LT, 12C)

Iron Rotors
2011+

MC-43 (38.1x41.3x32)

CP7545

MC-44=MC41 (31.8/36.0x32)

CP6697

Caliper pistons are corresponding to AP P/N (CPxxxx), Color variants are disregarded.

Why rebuild OE calipers with RB components (piston):

Left OE / Right RB (OE 31.8x30.1mm vs. RB 32x30mm) Made with same material of Stainless Steel.

  • RB Piston are vented for quick piston engagement and release.
  • RB pistons are mirror finished w/chrome plating on surface to assure the smooth movement and lasting durability.
  • RB pistons feature thin wall cut - Very light weight (2/3 of OE) for a more effective functionality.