KD5054 RS-635 Front Brake Pads

Barbaro Racing KD5054 RS-635 front brake pads for AP Racing CP5200 / CP9200 / CP9440, AP Racing CP9440-2S4L /CP9440-3S4L, CP3215D50 nominal16.8mm 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 KD5054: 132.6 × 55.9 × 16.8 mm; interchanges with AP Racing CP3215D50, Ferodo Racing FRP216.

Specifications

Barbaro part number	KD5054
Compound	RS-635 — Race endurance low-metallic
Barbaro factory code (SKU)	D50542N5
Axle	Front
Dimensions (L × H × T)	132.6 × 55.9 × 16.8 mm
Drawing note	Drawing is rotated (long side vertical): length = vertical dimension, height = horizontal dimension. Backing plate 5.5, friction 50. Both price-list drawings identical.
Supplied as	One axle set
Pad features	16.8 mm thick
Also available for KD5054	KD5054 RS-620 Race Lightweight, KD5054 RS-652 Race Extreme Hybrid

Caliper fitment

Caliper brand	Caliper	Details
AP Racing	CP5200 / CP9200 / CP9440	48 mm friction face
AP Racing	CP9440-2S4L /CP9440-3S4L, CP3215D50 nominal16.8mm

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.

Cross-reference / interchange numbers

Ferodo Racing	FRP216
AP Racing	CP3215D50

Interchange numbers identify the matching pad shape. Friction material, shims and wear-sensor hardware can differ between brands.

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.