Sale

Ksport

Procomp Front Big Brake Kit

$2,223.10 $2,112.21 Save $110.89

SKU: BKLX050-831SO

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Ksport Procomp 8 Piston Big Brake Kit is engineered to significantly upgrade your Lexus GS300, GS400, or GS430's braking performance, especially under demanding high-heat conditions. The calipers are a key feature, constructed from a one-piece billet of aircraft-grade aluminum, ensuring lightweight strength and excellent corrosion resistance. They house aluminum pistons that offer superior heat resistance compared to standard materials, maintaining uncompromised operation. The opposed piston design of the 8-piston calipers (standard on 13" and 14" systems) enhances pad wear and rigidity over OEM designs. These kits utilize CNC-machined carbon steel caliper brackets to ensure a direct fit to the OEM caliper bracket location. It comes standard with SC5 NAOC Ceramic pads, which provide optimal braking for street and occasional track use, while reducing brake dust by over 50% and minimizing noise and rotor wear. The optimal operating temperature range for these pads is between 194°F - 1022°F. Additionally, D.O.T. compliant stainless-steel braided brake lines are included, which prevent line expansion under pressure, leading to quicker pedal response and a firmer pedal feel. Customization options are available for caliper colors, including standard finishes like Orange, Red, Black, and Yellow, with upgrades to premium high-polish finishes such as Silver, Gold, and Titanium, as well as Glassy/Hard Anodized Colors. You can also opt for Cross Drilled rotors, recommended for daily drivers due to their cooler running temperatures, while Slotted rotors are recommended for track-focused vehicles. Ksport Big Brake kits are built to order, with production and delivery typically taking 4-6 weeks. This kit is specifically designed to fit Lexus GS300, GS400, and GS430 models from 1998 to 2005 with the JZS161 chassis.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKsport
Part NumberBKLX050-831SO
CategoryBrakes

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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