AP Racing | High-Performance Braking Systems

• AP Racing for BMW M3
• AP Racing for Porsche 991
• AP Racing for Subaru WRX STI
• AP Racing for Toyota GR86 / Subaru BRZ

• CP9660 six-piston Radi-CAL calipers and kits
• CP9668 four-piston Radi-CAL calipers and kits
• Factory Competition big brake kits (street use, dust-sealed)
• J-hook and grooved racing discs
• Brake fluid and hydraulics, including pedal boxes and master cylinders
• Air jacks and clutch hardware for endurance and time attack cars

AP Racing calipers use pressure-die cast bodies and an asymmetrical (Radi-CAL) design to reduce mass without losing rigidity. Less caliper flex means less pedal travel and a firmer, more consistent pedal as the discs heat up, which matters more than outright clamping force once a car is doing repeated hot laps rather than a single stop.

A big brake kit makes most sense on cars doing regular track days, time attack builds, and street cars driven hard enough that factory brakes fade. For a daily driver with occasional spirited use, a pad and rotor upgrade (for example DIXCEL) is often the better first step.

AP Racing kits carry genuine manufacturer warranty. Contact our team if you need help with fitment questions, replacement pads and discs, or a warranty enquiry.

CP9660 six-piston kits are offered for platforms including BMW M3 (E9x, F8x), Porsche 991 and Subaru WRX STI, but caliper mounting, disc diameter and bracket design change between chassis and sometimes between model years. Always confirm the exact kit part number is listed for your model, and check wheel clearance, as clearance behind aftermarket wheels can be tight, particularly on 18-inch fitments.

Some AP Racing racing calipers, including certain CP9660 and CP9668 variants, do not have dust seals and are intended for race and motorsport use only. Factory Competition kits are designed for road use and include the seals a street car needs.

Installation by a professional is recommended. Big brake kits usually need larger wheels to clear the caliper and disc, so check your wheel size and offset before ordering, and budget for braided lines, fresh brake fluid and a proper pad bed-in procedure.

• DIXCEL brake pads and rotors
• KORSH suspension and chassis components
• Radium Engineering fluid system components

Where can I buy AP Racing big brake kits in Australia?
Chicane Australia stocks AP Racing big brake kits, calipers and discs and ships Australia-wide from the NSW Central Coast. Shop by vehicle above, search by AP Racing part number, or contact our team with your chassis and wheel size so we can help check clearance before you order.

What is AP Racing Radi-CAL technology?
Radi-CAL is an asymmetrical caliper design that reduces weight while increasing stiffness. It also improves airflow around the caliper, helping keep temperatures and pedal feel consistent on track.

Will an AP Racing big brake kit fit my wheels?
Not always. Big brake kits increase caliper and disc diameter, so wheel clearance must be confirmed for your specific wheel and offset before ordering.

Can I run AP Racing calipers on a street car?
It depends on the kit. Some pure racing calipers lack dust seals and are for race and motorsport use only. Factory Competition kits are designed for street use.

Does fitment vary by model year?
Yes. Fitment can change by model year and variant, so confirm the exact application against the kit part number before ordering.