Drilled rotor style referenceSpecial order · Estimated lead time: typically 2-4 weeks
98-05 Lexus GS430 - Rear 4 Piston Big Brake Kit w/ 14 in. Drilled Rotors - Dualcomp
Choose year, make and model to confirm this application-specific product fits — you can add it to your cart either way.
Verify fitment- Two 4-piston Dualcomp calipers (rear axle)
- Two 14 in two-piece cross-drilled rotors with aluminum center bells
- street brake pads
- Stainless-steel braided brake lines
- CNC-machined caliper mounting brackets and hardware
- Hydraulic handbrake caliper circuit (see the series page)
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 — BKLX050-445CO
Product details
A 1998-2005 Lexus GS430 JZS161 can use this rear Dualcomp kit for its drilled rear look, with four-piston billet calipers on 14 in two-piece cross-drilled rotors. Owners who want the drilled look without changing the front will find this a natural fit.
The set includes two Dualcomp calipers for the rear axle, two cross-drilled rotors with aluminum center bells, street brake pads, and the hydraulic handbrake caliper circuit. Nothing in the set replaces the front brakes, which stay as they are. Each caliper is one-piece billet aluminum.
Match part number BKLX050-445CO once the year, make and model checker confirms the GS430 fit. Wheels of 18 in or larger are the planning rule here, so check the template against the barrel and spokes before you order. The part number helps keep the rear and front orders apart.
Supported features
Two pistons serve the foot brake and two serve the handbrake, each running independently on its own system.
Extremely lightweight two-piece rotors — commonly up to 50% lighter than OEM rotors of the same size.
A polished titanium handbrake cylinder and lever for feel, appearance, and control.
CNC-machined carbon steel brackets let the larger caliper bolt to the OEM caliper bracket location.
Cross-drilled rotors run cooler for daily-driven vehicles; slotted rotors are recommended for more track use.
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 cross-drilled rotors. Cross-drilled runs cooler and suits daily driving; the slotted version of this kit suits track use. Both versions are listed on the Dualcomp 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 BKLX050-445CO
These page names share this MPN; they do not confirm fitment. Verify your vehicle before ordering.