AP Racing Radi-CAL ENP Competition Front Kit 355mm - VW GTI, Golf R

The AP Racing by Essex Radi-CAL Competition Brake Kit with ENP (electroless nickel plated) calipers is a front brake upgrade for the Mk7 Volkswagen GTI and Golf R and the Mk8 GTI. 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

The kit removes about 30 lb of unsprung weight from the front of the car compared with the OEM brakes, despite larger discs. Each caliper weighs 6.2 lb without pads, against about 16.0 lb for the factory single-piston slider caliper. Each two-piece disc weighs 17.6 lb, compared with about 23.5 lb for the original 340mm 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 VW GTI, Golf R, the CP9660 caliper mounts radially on a dedicated bracket at 180mm centers with a 42mm offset, with an M10x1.0 inlet thread. Spiegler stainless steel brake lines with a clear sheath reduce compliance compared with the OEM rubber lines. The electroless nickel plated finish resists wear and deterioration, even at high temperatures. 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.

Features

• AP Racing CP9660 six-piston calipers in ENP finish
• 355 x 32mm, 72-vane J Hook discs on floating hats
• About 30 lb less unsprung weight
• 18mm thick brake pads
• Pistons sized for the OEM master cylinder and ABS

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. Essex has confirmed clearance with Volk RE30 CSII, OZ Ultraleggera 18x8 +45, Titan-7 TS-5 18x8.5 +45, Volk Racing ZE40 18x8.5 +44 and Konig Rennform 18x9 +45. Check your wheel with the Essex wheel fitment template before ordering.

Fitment