In the high-stakes world of touring car racing, performance isn’t just about horsepower and grip—it's about stopping power too. And in the British Touring Car Championship (BTCC), where fractions of a second separate victory from defeat, brake technology plays a critical role. One standout component in this arena is the BTCC 368mm x 36mm brake rotor—a purpose-built piece of racing hardware designed for extreme performance, durability, and thermal stability.
What Makes the 368mm x 36mm Rotor Special?
BTCC regulations demand tight control over vehicle modifications, yet still allow room for innovation within the limits. The 368mm x 36mm rotor is a product of this fine balance between regulation and engineering ingenuity. Here's why it's such a vital part of the BTCC braking system:
1. Massive Diameter for Maximum Leverage
At 368mm in diameter, these rotors provide increased leverage for the calipers to clamp down on. This translates into greater braking force with less pedal effort. In fast-paced racing scenarios where late braking is the norm, that added leverage helps drivers brake later, harder, and with more control—key ingredients for overtaking and defensive driving alike.
2. Extra Thickness (36mm) for Superior Heat Management
Brakes convert kinetic energy into heat, and with repeated heavy braking—especially during short, high-intensity BTCC races—heat can become the enemy. The 36mm thickness of the rotor gives it even more mass and surface area than typical race setups, allowing it to absorb and dissipate heat more effectively. This reduces the risk of brake fade and helps maintain consistent pedal feel throughout long stints or high-load circuits.
3. Vented and Slotted for Performance
BTCC rotors are typically internally vented and slotted, enhancing cooling and clearing away brake dust, gases, and moisture from the pad contact surface. The result is better bite, stronger modulation, and improved consistency during repeated high-speed stops.
4. Built to Withstand the Brutality of BTCC
BTCC racing is notoriously hard on brakes—tight circuits, aggressive battles, and late braking zones all take their toll. These rotors are forged from high-grade cast iron and engineered to resist warping, cracking, and thermal degradation under extreme conditions.
Perfect for Trackday & Clubsport Builds
While designed for top-level competition, the BTCC 368mm x 36mm rotor setup is now becoming increasingly popular in high-end trackday and clubsport builds—and for good reason.
When paired with XC3 Engineering’s precision-machined billet aluminium bells and caliper brackets, these rotors can be adapted to a wide range of platforms, offering:
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✅ Bolt-on fitment with XC3-engineered brackets designed for popular track platforms
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✅ Huge braking upgrade without the need for full motorsport-spec systems
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✅ Race-proven reliability with easy sourcing and servicing
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✅ Weight optimisation through lightweight XC3 aluminium bells
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✅ Versatility thanks to compatibility with a wide range of calipers and pad compounds
This combination delivers true motorsport stopping power in a form that suits both amateur racers and serious trackday enthusiasts—without sacrificing usability or budget.
Final Thoughts
The BTCC 368mm x 36mm brake rotor is far more than a component—it's the culmination of real-world race development, engineered to deliver lap after lap. And with XC3 Engineering’s mounting solutions, you can now install this championship-grade braking performance onto your own build with ease.
Whether you're pushing hard in Time Attack or carving corners at your local trackday, this setup offers the control, confidence, and consistency you need to drive on the limit.
Brackets and Bells available for BTCC Rotors HERE