Product Overview
Unlock serious braking performance for your BMW M2, M3 or M4 F8X with the XC3 BTCC Big Brake Kit. Built around AP Racing CP9660 Pro 5000 R six-piston calipers, available in Anodised Grey or Nickel Plated finish, ex-BTCC 368mm x 36mm floating rotors and XC3 precision-engineered mounting components, this complete front brake upgrade is designed for fast road, track day and clubsport use.
The kit increases thermal capacity, improves braking consistency and gives the F8X platform a proven motorsport brake package with strong replacement consumable options.
Key Features
- AP Racing CP9660 Pro 5000 R six-piston calipers
- Choice of Anodised Grey or Nickel Plated caliper finish
- Ex-BTCC 368mm x 36mm floating brake rotors
- XC3 anodised aluminium rotor bells
- XC3 anodised caliper brackets
- AP Racing floating bobbin hardware
- Optional anti-rattle clips available
- Braided front brake lines
- Chemi black high-tensile bracket hardware
- Ex-BTCC Pagid RSX brake pads included
- Designed for BMW M2, M3 and M4 F8X with OEM front hubs
- XC3 manufactured components covered by our Lifetime Warranty
Product Description
The BMW M2, M3 and M4 F8X platform is highly capable, but repeated hard braking on road or track can quickly expose the limits of the factory front brake setup. Higher speeds, turbocharged performance, high-grip tyres and longer sessions create more heat, more pad demand and less braking consistency.
The XC3 BTCC Big Brake Kit solves this by combining motorsport-derived 368mm x 36mm floating rotors with AP Racing CP9660 six-piston calipers. Customers can choose between Anodised Grey calipers for a motorsport-style finish or Nickel Plated calipers for a premium, corrosion-resistant appearance.
The larger rotor size improves heat capacity, while the floating bobbin assembly allows controlled rotor expansion under temperature. Optional anti-rattle clips are available for customers who want to reduce floating rotor hardware noise while retaining the benefits of a floating disc assembly.
XC3-designed bells and caliper brackets ensure correct fitment, rotor positioning, caliper alignment and pad sweep on the F8X chassis. The supplied rotors and pads are inspected ex-BTCC components, allowing customers to access high-level motorsport hardware at a more cost-effective price point than a fully new equivalent setup. Some cosmetic marks and signs of previous motorsport use should be expected.
Technical Metrics
Comparisons over standard BMW M F8X chassis braking system
| Metric |
XC3 BTCC Brake kit |
BMW OEM |
Comparison |
% difference |
| Weight |
26.3 kg |
32.4 kg |
- 6.3 kg weight saving |
18.8% reduction |
Pads not included in comparison
Why Buy from XC3
XC3 Engineering designs and manufactures key brake kit components in the UK, including our vehicle-specific rotor bells and caliper brackets. Every XC3-manufactured component is developed for accurate fitment, correct brake geometry and real-world track use.
Our manufactured components are covered by the XC3 Lifetime Warranty, giving you confidence that your brake kit is supported by proper engineering, not just supplied as a collection of parts.
All XC3 Big Brake Kit customers also receive 10% off future replacement brake consumables, including pads, rotors, bells and service hardware, helping reduce long-term running costs.
What’s Included
- 2 x AP Racing CP9660 six-piston calipers
- Choice of Anodised Grey or Nickel Plated caliper finish
- 2 x ex-BTCC 368mm x 36mm rotors
- 2 x XC3 anodised rotor bells
- 2 x XC3 anodised caliper brackets
- 2 x AP Racing bobbin kits
- Optional anti-rattle clips
- 1 x pair braided brake lines
- Chemi black high-tensile bracket hardware
- Ex-BTCC Pagid RSX brake pads
Vehicle Fitment
- BMW M2 F87
- BMW M2 Competition F87
- BMW M3 F80 inc Comp
-
BMW M4 F82 inc Comp
For vehicles using OEM front hubs. Professional installation required. Wheel clearance must be checked before ordering, especially with aftermarket wheels. These kits may be made to order depending on stock availability.
