KD5003 CSI-01B Front Brake Pads

Barbaro Racing KD5003 CSI-01B front brake pads for AP Racing CP5200 / CP9200 / CP9440, AP Racing CP6720 / CP9202, Dicase D41 / D42, AP Racing CP9440-2S4L / CP9440-3S4L, AP Racing CP5040, AP Racing CP9448 calipers. CSI-01B is Barbaro's designated carbon-ceramic disc compound (−30–600°C, μ 0.40–0.43, SAE J2521 AA noise rating). Pad shape KD5003: 132.3 × 55.9 × 15.4 mm; interchanges with Endless RCP015, AP Racing CP3215D50, Ferodo Racing FRP216.

Specifications

Barbaro part number	KD5003
Compound	CSI-01B
Barbaro factory code (SKU)	D50035N6
Axle	Front
Dimensions (L × H × T)	132.3 × 55.9 × 15.4 mm
Friction material height	47.8 mm
Supplied as	One axle set
Also available for KD5003	KD5003 C-02 Silent City, KD5003 C-01 Premium Street, KD5003 S-01 Street & Track

Caliper fitment

Caliper brand	Caliper	Details
AP Racing	CP5200 / CP9200 / CP9440	4-piston, 47.8 mm friction face
AP Racing	CP6720 / CP9202	pad shape CP3215D50
Dicase	D41 / D42	D50
AP Racing	CP9440-2S4L / CP9440-3S4L
AP Racing	CP5040
AP Racing	CP9448
AP Racing	CP9449

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

Mintex	1289
Brembo Racing	B5217
Ferodo Racing	FRP216
PAGID Racing	1361
Endless	RCP015
AP Racing	CP3215D50
Alcon	PNF0084X245.4, PNF0084X331.4
CIRCO	MB1648-16.5, MB1648-17
Hawk	HB110.654
Wilwood	8517

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

About the CSI-01B compound

CSI-01B · The designated compound

The designated formula for short-fiber molded coated carbon-ceramic discs — built on the CSI-01 lineage dating to 2019. High performance and low noise, finally unified. And cold bite that Ferrari and Lamborghini carbon-ceramic systems have always lacked.

Temperature window: −30–600°C
Friction: μ 0.40–0.43
Noise rating: SAE J2521 AA
Disc: Carbon-ceramic
SAE J2521 noise rating AA — on unmodified bare pads
Friction rises with temperature — exceeding 1.0 μ in fade tests
2,000+ vehicles on road · fewer than 5 noise cases
Ideal for: Carbon-ceramic street cars, including Ferrari and Lamborghini CCB systems

CSI-01B 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.