Ksport BKSB120-621SO Supercomp Big Brake Kit Floating Rotor with 4, 6, or 8 Piston Caliper

The Ksport BKSB120-621SO Supercomp Big Brake Kit delivers maximum stopping power through advanced brake engineering, significantly reducing brake fade while continuously cooling and refreshing the brake pad surface during braking. This sophisticated bolt-on upgrade is designed for easy installation with minimal tools and no vehicle modifications required in most applications.

Billet Aluminum Calipers

Each caliper is CNC machined from a single solid billet of aircraft-grade aluminum — not cast or welded — ensuring perfectly even wall thickness and uncompromised structural integrity throughout. Weighing just over 5 lbs each, these lightweight one-piece calipers feature a differential bore configuration, machined-in bridge tube protection grooves, aluminum pistons, high-temperature seals, and stainless-steel brake pad wear plates as standard. The opposed-piston design greatly improves pad wear and caliper rigidity compared to OEM units.

Full-Floating Two-Piece Rotor Assembly

The two-piece disc assembly reduces both rotating and unsprung weight for sharper, more responsive braking. The floating rotor's outer ring is designed to shift slightly as needed, allowing for better self-centering in the caliper, lowering brake drag, and delivering more even pad application. This floating design also prevents thermal stresses from extreme heat from warping the disc or cupping the braking surface.

Rotor Style Options

• Cross Drilled Rotors — Run cooler than slotted rotors; recommended for daily-driven street vehicles
• Slotted Rotors — Ksport's unique slot pattern expels gas and pad debris faster than conventional designs and reduces braking noise; recommended for vehicles seeing frequent track use

Every rotor is heat-treated and precision-balanced before shipment to ensure optimal, consistent performance from the first use.

Stainless-Steel Braided Brake Lines

D.O.T.-compliant stainless-steel braided brake lines are included as standard. These lines resist expansion under pressure, delivering a quicker pedal response and a firmer pedal feel compared to stock rubber lines.

NAOC Ceramic Brake Pads

Included NAOC Ceramic pads provide optimal braking performance for both street and occasional track use, with an operating temperature range of 194°F – 1,022°F for fast warm-up under normal driving conditions. The ceramic compound reduces brake dust by 50% or more compared to race pads while minimizing rotor noise and wear.

Key Features:

• Choice of 4, 6, or 8 piston caliper configurations
• One-piece CNC billet aircraft-grade aluminum caliper construction
• Differential bore caliper with machined bridge tube protection grooves
• Full-floating two-piece disc assembly reduces rotating and unsprung weight
• Aluminum pistons with high-temperature seals and stainless-steel pad wear plates
• D.O.T.-compliant stainless-steel braided brake lines included
• NAOC Ceramic pads rated 194°F – 1,022°F operating range
• Choice of cross drilled or slotted rotor style
• All rotors heat-treated and balanced before shipment
• Compatible with OEM ABS systems
• 12-month warranty covering manufacturer defects