BBK⭐ Star Dealer 2025
AP Racing
AP Racing CP9540 Radi-CAL II 4 Pot Big Brake Kit (Braking Point Rotors)
Rim Size
Caliper
Colour
Big Brake Kit100% Genuine
Fitment is chassis-specific. WhatsApp us your car model, year, and chassis number before ordering and we'll confirm compatibility.
$3,540
/ kit
Qty
Professional
Installation
Installation
Half Day
Job
Job
Manufacturer
Warranty
Warranty
| Brand | AP Racing |
| Model | AP Racing CP9540 Radi-CAL II 4 Pot Big Brake Kit (Braking Point Rotors) |
| Kit Type | Big Brake Kit (BBK) |
| Warranty | Manufacturer Warranty |
| Installation | Half day job |
⚠️ THIS PRODUCT IS ON A PRE-ORDER BASIS
AP Racing CP9540 Radi-CAL II 4 Pot Caliper
World Radi-CAL II Series
The CP9540 is AP Racing's 4-piston Radi-CAL II caliper — one of the most recognisable big brake calipers in motorsport, now street-legal and Singapore-ready. The patented asymmetric Radi-CAL geometry isn't just for show: the swept-arm design reduces body mass while concentrating rigidity exactly where braking forces are highest, giving you faster pedal response, better modulation, and less fade than a conventional caliper of similar weight.
Caliper Specifications
- Patented Radi-CAL II asymmetric design — reduced mass, maximum stiffness
- Forged two-piece aluminium alloy body
- Aluminium alloy differential bore pistons (Ø38.1mm + Ø41.3mm)
- Boot-type dirt seals fitted
- Pad anti-rattle clip fitted
- Radial mount, 195mm centres
- Suits Ø356–380mm x 28–32mm discs
- Available in Red, Black or Silver
- Weight: 3.25kg (without pads)
- Piston area: 49.56cm²
Suitable For: Daily Drive & Track Use
Ready to upgrade? WhatsApp us at 8809 8484 with your car model, year, and chassis number and we'll confirm fitment before you commit.
Why Buy From Us
Authorised AP Racing Dealer
We source direct from AP Racing — every kit is 100% genuine, no grey market, no counterfeits.
AP Racing Star Dealer
Awarded Star Dealer status by AP Racing for sales performance and technical expertise.
2024 & 2025
Full Factory Warranty
Every kit comes with AP Racing's factory warranty — backed by the manufacturer, not just us.
Our Big Brake Expertise
Dedicated BBK Workshop
Our technicians have hands-on experience fitting big brake kits across a wide range of makes and models — we know the fitment quirks, clearance issues, and common gotchas before they become your problem.
What's Included
Professional Fitting
Full installation by our trained technicians
Brake Bleeding
Brake fluid bled & topped up as part of the job
Full Hardware Kit
All brackets, bolts & hardware included
Manufacturer Warranty
Factory warranty included from installation date
How to Order
01
Purchase Through the Website
Add to cart and complete checkout — GrabPay Later and Atome instalment options available.
02
We'll Confirm Fitment & Arrange Your Slot
Our team will WhatsApp you to verify your chassis number and lock in your appointment.
03
Drive In & Get It Done
Half day job — allow the morning or afternoon. Kit fitted, fluid bled, and you're road-ready.