AP Racing Radi-CAL ENP Competition Front Kit 355mm - BMW E46 M3

The AP Racing by Essex Radi-CAL ENP Competition Brake Kit is a front brake upgrade for the 2001-2006 BMW E46 M3. It replaces the factory front brakes with AP Racing CP9660 Radi-CAL Pro5000R six-piston calipers in a jewel-like electroless nickel plated finish and 355 x 32mm, 72-vane J Hook discs, giving one of BMW's best loved track cars a modern racing brake.

Why upgrade

The E46 M3's factory brakes are adequate on the street but struggle with repeated laps. This kit grows the disc from 325 x 28mm to 355 x 32mm for more heat capacity while still removing about 5 pounds of unsprung weight from the nose. Each caliper weighs 6.2 pounds against 8 for the OEM unit, and each floating disc weighs 17.6 pounds against 19. Pistons are sized for the OEM master cylinder and ABS, so it works with the OEM rear brakes or a matching AP Racing rear kit.

ENP caliper and disc construction

The CP9660 is a radial-mount Radi-CAL caliper with an asymmetric, computer-optimized body. Its ENP finish is incredibly durable and easy to clean. Stainless pistons, anti-knockback springs and low-drag seals keep the pedal firm. The CP5773 discs ride on 6061 hard anodized aluminum hats with fully floating hardware.

Features

• AP Racing CP9660 Radi-CAL six-piston calipers in ENP finish
• 355 x 32mm, 72-vane J Hook discs on floating hats
• About 5 lb lighter than the OEM front brakes
• Pads available from all major manufacturers
• Works with OEM or AP Racing rear brakes

What's Included

• One pair AP Racing CP9660 Radi-CAL Pro5000R six piston calipers in ENP finish (Electroless Nickel Plated)
• One pair 355x32mm AP Racing CP5773, 72 vane, J Hook racing discs, with fully floating 6061 hard anodized aluminum hats and attachment hardware
• One pair caliper mounting brackets and hardware
• One pair Spiegler Stainless Steel Brake Lines with abrasion resistant coating
• Detailed installation instructions

Brake pads are not included.

Specifications

Video

Fitment notes

Fits the 2001-2006 BMW E46 M3, coupe and convertible. Clears Apex EC-7 18 x 10 +33 wheels without a spacer; check other wheels with the wheel fitment template before ordering.

Fitment