KD5008W RS-635 Brake Pads - AP Racing CP9660

Barbaro Racing KD5008W RS-635 brake pads for AP Racing CP9660, Alcon TA6 calipers. RS-635 is Barbaro's low-metallic endurance race compound (50–800°C, μ 0.40–0.52) — CEC 2025 TCS class winner. Pad shape KD5008W: 151.9 × 68.6 × 18 mm.

Specifications

Barbaro part number	KD5008W
Compound	RS-635 — Race endurance low-metallic
Barbaro factory code (SKU)	D5008W2N5
Axle	Front or rear (caliper-dependent)
Dimensions (L × H × T)	151.9 × 68.6 × 18 mm
Drawing note	Drawing is rotated (long side vertical): length = vertical dimension, height = horizontal dimension. Also printed: 51.5 inner width. Both price-list drawings identical.
Supplied as	One axle set
Pad features	18 mm thick
Also available for KD5008W	KD5008W RS-620 Race Lightweight, KD5008W RS-652 Race Extreme Hybrid

Caliper fitment

Caliper brand	Caliper	Details
AP Racing	CP9660	flat-top (no tab), 54 mm friction face
Alcon	TA6	18 mm thick

Fitment is compiled from the Barbaro Racing application catalogue and Barbaro factory data, together with the vehicle listings of the interchange part numbers below. Brake packages can differ within one model — please compare your current pads with the dimensions and drawing, or send us your VIN, before ordering.

About the RS-635 compound

RS-635 · The endurance champion

The CEC 2025 class winner. At Tianfu International Circuit, a Hongqi H6 on RS-635 ran a 200-minute stint against PAGID RST3's 120 — with less wear.

Temperature range: 50–800°C
Friction: μ 0.40–0.52 (steel disc)
Formula: Race endurance low-metallic
Discs: Steel and carbon-ceramic
CEC Championship validated — TCS class winner
200 min endurance on a single set
Ideal for: Endurance racing in heavier GTC and touring cars

RS-635 full specifications on barbaro-racing.com

About Barbaro Racing

Barbaro Racing (野蛮人) is the performance brand of the CAC Racing Division — proprietary compounds developed entirely in-house. Development begins on the dynamometer and ends on the circuit: every friction formula is bench-tested to destruction before earning the right to carry the Barbaro name. All compounds are validated against GB5763-2018 national standards; Street Series compounds are asbestos-free.