Slotted kit image for BKLX050-836SOSpecial order · Estimated lead time: typically 2-4 weeks
98-05 Lexus GS430 - Front 8 Piston Big Brake Kit w/ 13 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 13 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: 1998–2005 Lexus GS430 · JZS161
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 — BKLX050-836SO
Product details
Slotted rotors are the track-oriented choice in the Supercomp range, and this front kit puts them on the 1998 to 2005 Lexus GS430 (JZS161) behind eight-piston billet aluminum calipers. The rotors are 13 inch (330 mm), two-piece, with aluminum center bells.
The package includes two calipers, SC5 street pads, stainless steel braided lines, CNC-machined brackets and hardware. The brackets mount to the OEM caliper bracket location, and the car's master cylinder and ABS stay in use. The floating rotor ring centers itself in the caliper, which cuts drag and gives more even pad contact. Choose painted orange, red, yellow or black calipers without extra charge, with race pads and titanium or anodized center bells as upgrades. After installation, bed the pads with ten light-to-medium stops from 30 to 45 mph. If most of your driving is on the street, the cross-drilled version of this kit is the one the page suggests. The GS300 and GS400 are also listed on JZS161; confirm with the year, make and model checker.
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 (3)
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 BKLX050-836SO
These page names share this MPN; they do not confirm fitment. Verify your vehicle before ordering.