AP Racing Radi-CAL ENP Competition Front Brake Kit 372mm - Audi TT RS

The AP Racing by Essex Radi-CAL ENP Competition Brake Kit replaces the front brakes on the 8S Audi TT RS with a lighter, track-focused system. AP Racing CP9660 Radi-CAL Pro5000R six-piston calipers in an electroless nickel plated finish clamp 372 x 34mm, 72-vane J Hook discs on floating aluminum hats. It is a direct answer for TT RS owners who find the factory iron brakes heavy and quick to fade in repeated track sessions.

Why upgrade

The kit removes roughly 26 pounds of unsprung weight from the nose compared with the factory TT RS iron brakes, coming close to the weight of the optional carbon ceramic system. Each caliper weighs 6.2 pounds against 10.75 pounds for the factory eight-piston unit, and each disc 20.6 pounds against 29.6. With less mass at each front corner, the five-cylinder TT RS turns in more eagerly, and the pistons are sized to integrate with the OEM master cylinder and ABS.

Caliper and disc construction

AP Racing's Radi-CAL body is asymmetric, designed by computer analysis to be stiff where braking loads flow and light elsewhere. The ENP coating resists wear and deterioration even at elevated temperatures and wipes clean after a dusty track day. Stainless pistons, anti-knockback springs and low-drag, high-temperature seals are standard, and pads change without pulling the caliper. The CP7177 J Hook discs sit on 6061 hard anodized hats with fully floating hardware.

Features

• AP Racing CP9660 Radi-CAL Pro5000R six-piston calipers in ENP finish
• 372 x 34mm, 72-vane J Hook discs on floating aluminum hats
• About 26 lb lighter than the factory iron front brakes
• Clears OE 19 and 20 inch wheels without a spacer
• Works with the OEM rear brakes

What's Included

• One pair AP Racing CP9660 Radi-CAL Pro5000R six piston calipers in ENP Finish (Electroless Nickel Plated)
• One pair 372x34mm 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

Fits the 8S TT RS listed below. Clears the OE Audi TT RS 20 inch front wheel without a spacer, as well as Neuspeed RSE 102 19 x 9 +45 and TSW Interlagos 18 x 9 +53; BC Forged RZ23 19 x 10 +50 needs an 8mm spacer. Check other wheels with the wheel fitment template. Call us about RS3 fitment.

Fitment