KD7898 CSI-01B Front Brake Pads - Audi A8

Barbaro Racing KD7898 CSI-01B front brake pads for Audi A8 and Akebono 9N, Akebono Front caliper family using P85170 /WVA25908-25909 /FMSID1952 9178 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 KD7898: 214.2 × 88.8 × 16.3 mm; interchanges with FMSI D1952, Brembo P85170.

Specifications

Barbaro part number	KD7898
Compound	CSI-01B
Barbaro factory code (SKU)	D78985N6
Axle	Front
Dimensions (L × H × T)	214.2 × 88.8 × 16.3 mm
Drawing note	price-list copy only, cropped: X2 pads 214.2 x 88.8 x 16.3 (inner 187.1, bottom 197.2, friction 68.6 x 185.4); second pad at right cut off (shows 88.8 / 16.3); height digits blurry (88.8, possibly 86.8)
Supplied as	One axle set
Also available for KD7898	KD7898 C-02 Silent City, KD7898 S-01 Street & Track, KD7898 RS-635 Race Endurance

Caliper fitment

Caliper brand	Caliper	Details
Akebono	9N	67 mm friction face
Akebono	Front caliper family using P85170 /WVA25908-25909 /FMSID1952 9178

Vehicle fitment

Make	Model	Chassis	Years	Engine / variant	Notes
Audi	A8			IV (fourth generation), Akebono 9N caliper

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	D1952, D1952-9178
Brembo	P85170
WVA	25908, 25909

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.