KD5033 CSI-01B Brake Pads - Brembo GT4

Barbaro Racing KD5033 CSI-01B brake pads for Brembo GT4, Dicase X41 / X42, Brembo 20.4862.05, manufacturer nominal18.4mm caliper family, Brembo F50, Brembo BM4 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 KD5033: 132 × 67 × 15.4 mm; interchanges with FMSI 07.B314.30, Ferodo Racing FCP1281.

Specifications

Barbaro part number	KD5033
Compound	CSI-01B
Barbaro factory code (SKU)	D50335N6
Axle	Front or rear, depending on where the caliper is fitted
Dimensions (L × H × T)	132 × 67 × 15.4 mm
Friction material height	51.8 mm
Supplied as	One axle set
Pad features	narrow pad; wear-sensor provision; D52 friction face
Also available for KD5033	KD5033 C-02 Silent City, KD5033 C-01 Premium Street, KD5033 S-01 Street & Track, KD5033 RS-635 Race Endurance, KD5033 RS-652 Race Extreme Hybrid

Caliper fitment

Caliper brand	Caliper	Details
Brembo	GT4	narrow pad, 51.8 mm friction face, wear-sensor socket, front or rear
Dicase	X41 / X42	D52
Brembo	20.4862.05, manufacturer nominal18.4mm caliper family
Brembo	F50	narrow pad
Brembo	BM4	narrow pad

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

FMSI	07.B314.30
Brembo Racing	07.B314.30
Ferodo Racing	FCP1281

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.