AP Racing Radi-CAL ENP Competition Front Kit 355mm - BMW E36 M3

The AP Racing by Essex Radi-CAL Competition Brake Kit with ENP (electroless nickel plated) calipers is a front brake upgrade for the 1995-1999 E36 BMW M3. It pairs AP Racing CP9660 Radi-CAL Pro5000R racing calipers with 355 x 32mm, 72-vane AP Racing J Hook discs on fully floating aluminum hats, built for track days and competition driving.

Why upgrade

Each caliper weighs 6.2 lb without pads, against 8.1 lb for the factory single-piston slider caliper. Each two-piece disc weighs 17.6 lb, compared with 18.7 lb for the original 315mm disc. The caliper takes a 18mm thick pad for long life and heat tolerance. The ENP (electroless nickel plated) finish is very durable and easy to clean. Every component is designed to resist the heat of extended track sessions. Pistons are sized to work seamlessly with the OEM master cylinder and ABS. It works with the OEM rear brakes.

Caliper and disc construction

On the BMW E36 M3, the CP9660 caliper mounts radially on a dedicated bracket at 180mm centers with a 42mm offset, with an M10x1.0 inlet thread. The caliper uses a commonly available 18mm thick pad shape. Ventilated, domed-back stainless steel pistons keep heat out of the brake fluid for a very firm pedal. Anti-knockback springs behind the caliper pistons limit pad knockback. Stainless steel caliper hardware gives a long service life even with frequent pad changes. There are no dust boots to burn up at track temperatures. Pads change with two bolts or a quick-change spring clip, with no caliper removal. The championship-winning 72-vane AP Racing J Hook discs are fully floating.

Features

• AP Racing CP9660 six-piston calipers in ENP finish
• 355 x 32mm, 72-vane J Hook discs on floating hats
• 18mm thick brake pads
• Pistons sized for the OEM master cylinder and ABS
• No caliper removal for pad changes

What's Included

• One pair AP Racing CP9660 Radi-CAL Pro5000R racing calipers in ENP Finish (Electroless Nickel Plated)
• One pair 355x32mm AP Racing CP7177, 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

This front kit fits the vehicles in the table below, which we confirmed against two sources using US model years. Call us about the BMW Z3 M Roadster / M Coupe before ordering; we have not confirmed fitment for them yet. Check your wheel with the Essex wheel fitment template before ordering.

Fitment