Slotted kit image for BKLX050-961SOSpecial order · Estimated lead time: typically 2-4 weeks
98-05 Lexus GS400 - 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: 1998–2005 Lexus GS400 · 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 — BKLX050-961SO
Product details
Slotted 15.7 in rotors and eight-piston Supercomp calipers make this front kit for the 1998-2005 Lexus GS400 JZS161. It appeals to owners who want slots at the front instead of drilled holes. Slots at the front are the visible difference from the drilled Supercomp front kit.
Two 8-piston Supercomp calipers and two two-piece slotted rotors with aluminum center bells come with SC5 street brake pads, stainless-steel braided lines, and CNC-machined caliper brackets with hardware. Caliper color is picked at configuration. Each caliper is machined from billet aluminum.
Match part number BKLX050-961SO after the year, make and model checker confirms the GS400 application. Plan the wheel with the 15.7 in rotor in mind and measure clearance at the barrel and spokes before ordering. Check the template against the barrel and spokes before ordering a wheel.
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 BKLX050-961SO
These page names share this MPN; they do not confirm fitment. Verify your vehicle before ordering.