BMW M2 M3 M4 F80 F82 F87 BTCC Big Brake Kit – AP Racing CP9660 368mm Front Brake Upgrade | XC3 Engineering
Spread the cost with Klarna. 18+, T&Cs apply, credit subject to status. Learn more (opens in a new tab)
Product Details
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, professionally skimmed ex-BTCC 368mm x 36mm floating brake rotors and XC3 precision-engineered mounting components, this complete front brake upgrade delivers proven motorsport hardware in a package designed specifically for the BMW F8X platform.
Each ex-BTCC rotor is professionally skimmed before supply, removing the previous pad transfer layer and providing a fresh braking surface ready to be bedded in with your chosen new brake pad compound.
Choose from Pagid RSL29, PFC 11, Ferodo DSUNO or Ferodo DS3000 depending on your intended use and preferred braking characteristics.
What’s Included
-
2 x AP Racing CP9660 Pro 5000 R six-piston calipers
-
Choice of Anodised Grey or Nickel Plated caliper finish
-
2 x professionally skimmed ex-BTCC 368mm x 36mm floating brake rotors
-
Your choice of new brake pad compound
-
2 x XC3 anodised aluminium rotor bells
-
2 x XC3 anodised caliper brackets
-
2 x AP Racing floating bobbin kits
-
1 x pair braided front brake lines
-
High-tensile mounting hardware
Professionally Skimmed Ex-BTCC Rotors
The 368mm x 36mm floating rotors used in this kit are genuine ex-BTCC motorsport components which are inspected and professionally skimmed before supply.
During braking, pad material forms a transfer layer on the rotor surface. Different brake pad compounds use different friction materials, and introducing a new compound onto an existing transfer layer can contribute to uneven deposits, vibration or inconsistent bedding.
Professional skimming removes the previous braking surface and pad transfer layer, providing a clean, refreshed face ready for the new pad compound selected with the kit.
This provides:
-
A fresh rotor surface for bedding in new brake pads
-
Removal of previous pad deposits and transfer material
-
Greater flexibility when choosing brake pad compounds
-
More consistent initial bedding
-
Reduced risk of incompatible pad transfer layers
-
A cleaner starting point for the complete braking system
The rotors remain ex-BTCC components, so cosmetic marks and evidence of previous motorsport use should still be expected. Skimming refreshes the braking faces rather than making the rotor a new component.
Choose Your Brake Pad Compound
The kit can be supplied with a choice of new motorsport brake pads, allowing the braking characteristics to be matched to the way the car is used.
Pagid RSL29
Endurance-focused compound with excellent modulation, consistency and pad life. A strong choice for longer track sessions and drivers prioritising predictable braking behaviour.
PFC 11
High bite with excellent modulation and release characteristics. Ideal for drivers wanting a sharper, more responsive pedal feel for hard track and sprint use.
Ferodo DSUNO
High-performance race compound with strong braking torque, excellent control and good high-temperature performance. Well suited to heavy track use and demanding applications.
Ferodo DS3000
Aggressive race compound with very strong initial bite. Best suited to sprint, competition and track applications where maximum response is preferred.
Other brake pad compounds are also available upon request. If you require a specific manufacturer or compound, contact XC3 and we can advise on compatibility and availability for the AP Racing CP9660 caliper.
Product Description
The BMW M2, M3 and M4 F8X platform is extremely capable, but repeated heavy braking can expose the limitations of the factory front brake system. Increased power, higher speeds, high-grip tyres and sustained track use all generate significantly greater braking temperatures.
The XC3 BTCC Big Brake Kit combines the AP Racing CP9660 six-piston caliper with a 368mm x 36mm floating rotor to increase thermal capacity and provide more consistent braking performance during repeated high-temperature use.
The floating rotor assembly allows controlled radial expansion as rotor temperature increases, helping reduce stress between the rotor and aluminium bell while maintaining consistent rotor alignment.
XC3-designed rotor bells and caliper brackets correctly position the AP Racing hardware on the BMW F8X platform, maintaining accurate caliper alignment, rotor positioning and pad sweep.
Replacement AP Racing bobbins and anti-rattle clips are available separately from XC3. Anti-rattle clips can be used to reduce the characteristic noise associated with floating brake hardware, while replacement bobbins allow the floating rotor assembly to be serviced when required.
Key Features
-
AP Racing CP9660 Pro 5000 R six-piston calipers
-
Choice of Anodised Grey or Nickel Plated finish
-
Professionally skimmed ex-BTCC 368mm x 36mm floating brake rotors
-
Fresh braking surface ready for new pad bedding
-
Choice of four new motorsport brake pad compounds
-
Additional brake pad compounds available upon request
-
XC3 anodised aluminium rotor bells
-
XC3 anodised caliper mounting brackets
-
Genuine AP Racing floating bobbin hardware
-
Replacement bobbins and anti-rattle clips available separately
-
Braided front brake lines
-
High-tensile mounting hardware
-
Designed specifically for BMW F8X M2, M3 and M4
-
XC3 manufactured components covered by our Lifetime Warranty
Why Buy from XC3
XC3 Engineering designs and manufactures the vehicle-specific components required to correctly integrate AP Racing motorsport hardware with the BMW F8X platform.
Our rotor bells and caliper brackets are engineered for accurate fitment, correct brake geometry and demanding road and track use.
By supplying the ex-BTCC rotors professionally skimmed and pairing them with a new brake pad compound of your choice, the kit provides a clean starting point for correct pad bedding and allows the braking setup to be matched to the intended use of the car.
Every XC3-manufactured component is covered by our Lifetime Warranty.
XC3 Big Brake Kit customers also receive access to discounted replacement brake consumables, including pads, rotors, bells and service hardware, helping reduce the long-term running costs of the braking system.
Vehicle Fitment
-
BMW M2 F87
-
BMW M2 Competition F87
-
BMW M3 F80
-
BMW M3 Competition F80
-
BMW M4 F82
-
BMW M4 Competition F82
-
BMW M4 F83
-
BMW M4 Competition F83
For vehicles using OEM front hubs. Professional installation is required.
Shipping & Delivery
Shipping times vary from brand to brand. We're currently updating our product pages with accurate delivery dates.
For an estimated delivery date on this part, please email sales@cpcclubsport.com.
Why CPC Clubsport?
CPC Clubsport was started by two friends who've spent years building, driving and developing their own BMW M cars – on the road, on track and at the Nürburgring.
Around 90% of our range has been tried, tested or developed on our own cars. Every part is chosen for quality, reliability and a genuine purpose on track, and we're always happy to help you find the right fit for your car.
Need Help?
Not sure if this part fits, or which option is right for your car? Our team is happy to help.
Call us
07767 134595
Available Monday to Friday, 9am to 5pm.
Email us
sales@cpcclubsport.com
We aim to reply within 48 hours.
To help us give you the right answer first time, have your BMW model, chassis code, year and details of any existing modifications to hand.
You can also browse our FAQs or visit our contact page.
What our customers say
Excellent
5.0 out of 5 · Based on 15 reviews
-
Fitted the AP Racing CP9660 368mm Front Brake Upgrade to my F82 M4 and the improvement in braking performance is immediately noticeable. The pedal feels much more confidence-inspiring and the brakes remain consistent when used hard. The kit looks fantastic behind the wheels as well. Very impressed with the upgrade.
Review of this product
-
Bought the Infinity Design S65 Modular Carbon Plenum for my E9X M3. The finish is excellent and it completely transforms the look of the engine bay. It feels like a properly engineered piece rather than just a cosmetic upgrade. Really pleased with how it looks once fitted.
-
I went with the Endless MX-72 Plus Brake Pads for my G8X and they've been a great upgrade. The pedal feels positive and the pads give plenty of confidence when braking hard. They also work well for normal road driving, which was important to me. CPC Clubsport made the whole ordering process easy.
-
Ordered the Solid Billet Aluminium Oil Filter Cap for my BMW. It's a relatively small upgrade, but the quality and finish are excellent and it looks much better than the standard item. It arrived well packaged and fitted without any issues. Another quality part from CPC Clubsport.
-
Bought the HEL Performance Carbon Fibre Brake Pad Shims for my F80 M3. The quality is excellent and they fitted perfectly with the brake setup. Everything arrived securely packaged and exactly as described on the website. A straightforward purchase from CPC Clubsport.
Reviewed: HEL Performance Carbon Fibre Brake Pad Shims F8X (Front)
-
Had the Nitron NTR R3 Coilovers fitted to my E9X M3 and the difference is impressive. The car feels much more controlled and planted, particularly through faster corners. The adjustability is a big advantage as well, allowing the setup to be tailored to how I use the car. Excellent upgrade for a car that sees both road and track use.
-
Fitted the Ferodo DS1.11 Brake Pads F8X (Front) to my F82 M4 and they've been excellent. The initial bite is strong and the braking feels much more consistent when pushing the car hard. They’re particularly impressive on track where the brakes stay predictable through repeated heavy braking zones. Very happy with the purchase and service from CPC Clubsport.
Reviewed: Ferodo DS1.11 Brake Pads F8X (Front)
-
Ordered the MMX Performance 15mm Wheel Spacers & Bolt Kit for my G8X. The kit arrived complete and well packaged, and installation was straightforward. The spacers give the car a much better stance without going overboard. Really happy with how the car looks and with the quality of the kit.
Reviewed: MMX Performance 15mm Wheel Spacers & Bolt Kit - G8X
-
Recently fitted the SG Motorworks S65 Unfiltered Velocity Stack Kit to my E9X M3. The quality of the kit is excellent and the finish looks great once installed. The engine sounds noticeably more aggressive under acceleration and the throttle response feels really sharp. Very pleased with the upgrade.
-
Picked up the Millers Oil Motorsport CFS 10W-60 NT+ for my E9X M3. Ordering was straightforward and the oil arrived well packaged and quickly. I've used Millers in the car for both road driving and track days and have been very happy with it. Good quality product from a company that clearly understands performance BMWs.
-
Recently purchased the Recaro Pole Position ABE Bucket Seat for my BMW. The quality and finish are excellent, and the seat gives a much more supportive driving position when pushing the car on track. It also looks fantastic in the interior. Very pleased with the purchase and the service from CPC Clubsport.
Reviewed: Recaro Pole Position ABE Bucket Seat
-
Bought the BIMMERWORLD DCT OVERFILL/DRY BREAK KIT for my BMW and it was exactly what I was looking for. The kit arrived well packaged and the components feel very well made. Installation was straightforward and it makes servicing the DCT much easier. Good product and a smooth experience ordering from CPC Clubsport.
Reviewed: BIMMERWORLD DCT OVERFILL/DRY BREAK KIT
-
Used Endless RF-650 during a brake service on my M3. The fluid was well packaged and arrived quickly from CPC Clubsport. After getting the car back on the road, the pedal feels firm and consistent, including during some spirited driving. A quality product and good service.
Reviewed: Endless RF-650 Brake Fluid 500ml
-
Recently installed the Milltek OPF/GPF Back Exhaust on my F82 M4. The fitment was excellent and the quality of the system is exactly what you'd expect from Milltek. It gives the car a much better exhaust note without becoming unbearable on longer drives. Very happy with the result and the service from CPC Clubsport.
-
Bought the MMX Lowering Springs for my BMW and I'm really pleased with the result. The ride height is noticeably better without making the car uncomfortable for everyday driving. The car also feels more composed through corners. Installation was straightforward and the finished stance looks much better.
Reviewed: MMX Lowering Springs F8x M4
About CPC Clubsport
By drivers, for drivers
CPC Clubsport was founded by two friends with a lifelong passion for BMW Motorsport. We’ve spent years building, driving and developing our own cars, from the road to the track and the Nürburgring.
Around 90% of what we stock has been tried, tested or developed through our own cars and with friends along the way, and every product is chosen for quality, performance, reliability and a genuine purpose on track.