Slotted kit image for BKAU281-961SOSpecial order · Estimated lead time: typically 2-4 weeks
83-87 Audi 90 - Front 8 Piston Big Brake Kit w/ 15.7 in. Slotted Rotors - Supercomp
Choose year, make and model to confirm this application-specific product fits — you can add it to your cart either way.
Verify fitment- Two 8-piston Supercomp calipers (front axle)
- Two 15.7 in two-piece slotted rotors with aluminum center bells
- SC5 street brake pads
- Stainless-steel braided brake lines
- CNC-machined caliper mounting brackets and hardware
One approved application: 1983–1987 Audi 90 · B4 · FWD
Choose an available option for each required item to enable Add to cart: Choose Caliper Color, Street or Race Pads, Center Bell Upgrades. Options marked “Contact for quote” require a KSport quote and cannot be added directly.
- Ships from Mesa, AZ
- 12-month limited warranty
- Special order: typically 2-4 weeks
Specifications — BKAU281-961SO
Product details
The 15.7 in slotted Supercomp front kit suits a 1983-1987 Audi 90 B4 driver who wants a large, purposeful rotor for demanding use. Eight pistons in one-piece billet aluminum calipers squeeze two 400 mm two-piece slotted rotors, and the aluminum center bells keep the hub assembly as light as the design allows.
Slotted rotors are the track-leaning option, and the slots help the face clear gas and debris during repeated hard stops. The package includes SC5 street pads for road use, stainless-steel braided lines and CNC-machined carbon steel caliper brackets with hardware. The kit is also listed for the 1983-1987 Audi 80 in the same chassis and drivetrain, so compare your car with the year, make and model checker before ordering.
Plan for wheel room first, since a rotor this large leaves little margin. Check the wheel barrel and spokes against the KSport template, then confirm that the factory master cylinder and ABS will work with your setup, which the kit is listed to do. Keep in mind that the factory handbrake will not operate, so arrange another way to hold the car on a grade.
Supported features
One-piece construction from a solid billet of aerospace-quality aluminum rather than cast or welded, for even thickness and strength across the caliper block.
The outer section shifts slightly as needed for better self-centering in the caliper, lowering brake drag and boosting performance through more even application.
Calipers, floating brake discs, SC5 street pads, owner's manual, and all required hardware come standard.
CNC-machined carbon steel brackets let the larger calipers bolt to the OEM caliper bracket location.
Cross-drilled rotors run cooler for daily-driven vehicles; slotted rotors are recommended for more track use.
DOT-compliant stainless braided lines stop expansion under pressure for quicker response and a firmer pedal than stock rubber lines.
Standard painted orange, red, black, and yellow; premium high-polish silver, gold, and titanium; glassy and hard-anodized finishes; over 20,000 custom colors on request.
Compatible applications (2)
Choices for this kit
This part number ships with slotted rotors. Slotted suits track use; the cross-drilled version of this kit suits daily driving. Both versions are listed on the Supercomp page.
Painted KSport orange, race red, caution yellow or jet black at no extra charge. Premium high-polish, glassy and hard-anodized finishes cost extra.
Street pads are standard; race pads, titanium or twin-colour anodized center bells are optional upgrades.
Choose the caliper finish, pads and center-bell configuration above. Every selection and any extra charge is shown before Add to Cart and saved with the order. Contact KSport for a custom color quote.
Installation
Bolt-on installation with the supplied brackets; no vehicle modification on most applications. After fitting, bed the pads in: on a clear road, ten light-to-medium stops from 30–45 mph, three seconds each, at least a quarter mile apart. Some noise before the brakes warm up is normal for big brake kits.
Brake system support and bed-in procedureWarranty & service
12-month limited warranty to the original purchaser against defects in materials and workmanship. Racing use, exterior finish and improperly installed or modified parts are not covered; keep your original invoice for any claim. Small surface cracks on cross-drilled rotors are normal wear and not a defect. Replacement pads, rotors, lines and hardware are sold individually.
Warranty terms and service requestsOther published pages for MPN BKAU281-961SO
These page names share this MPN; they do not confirm fitment. Verify your vehicle before ordering.