Ksport BKSB040-621SO Big Brake Kit Floating Rotor Slotted Piston Caliper Options - 4/6/8

The Ksport BKSB040-621SO Big Brake Kit is a high-performance brake upgrade engineered to deliver dramatically improved stopping power over OEM braking systems. Built around advanced brake technology, this kit significantly reduces brake fade while continuously cooling and refreshing the brake pad surface during heavy braking — whether on the street or the track.

Aircraft-Grade Billet Caliper Construction:

• CNC machined from a single solid billet of aircraft-quality aluminum — not cast or welded
• Available in 4, 6, or 8 piston caliper configurations to match your performance needs
• Differential bore configuration for optimized pad contact and wear
• Machined-in protection grooves for bridge tube durability
• Weighs just over 5 lbs. per caliper — a significant reduction over OEM units
• Opposed piston design improves pad wear evenness and overall caliper rigidity

Floating Two-Piece Rotor Design:

• 2-piece disc assembly reduces both rotating and unsprung weight
• Floating outer rotor section shifts slightly as needed for better self-centering in the caliper
• Prevents thermal stress warping and braking surface cupping under extreme heat
• Reduces brake drag and promotes more even pad application
• Every rotor is heat treated and precision balanced before shipment
• Unique slot design expels gas and pad debris faster than conventional slot patterns, reducing braking noise

Premium Supporting Components:

• Aluminum pistons for superior heat resistance and consistent operation
• High-temperature seals rated for racetrack temperatures
• Stainless-steel brake pad wear plates standard on all caliper designs
• D.O.T.-compliant stainless-steel braided brake lines prevent expansion under pressure, delivering a firmer pedal feel and quicker response over stock rubber lines

Rotor Style Options:

• Cross Drilled: Runs cooler and is recommended for daily-driven vehicles
• Slotted: Superior heat and gas dispersal, recommended for frequent track use

Designed for straightforward bolt-on installation with minimal tools required in most applications, the Ksport BKSB040-621SO big brake kit is backed by a 12-month manufacturer's warranty covering defects. All OEM ABS systems remain fully functional with this brake upgrade.