Ksport BKSB020-621CO Big Brake Kit 6-Piston Caliper 12 in. Cross Drilled Floating Rotor

The Ksport BKSB020-621CO Big Brake Kit is a sophisticated bolt-on brake upgrade engineered to deliver significantly enhanced stopping power and sustained fade resistance under high-heat driving conditions. Featuring a full-floating two-piece rotor assembly and multi-piston opposed caliper design, this kit is a direct upgrade over OEM brake hardware with no vehicle modifications required in most applications.

Floating Rotor Design:

The two-piece floating disc assembly reduces both rotating and unsprung weight while allowing the outer rotor ring to shift slightly as needed. This self-centering action lowers brake drag, prevents thermal warping, and eliminates cupping of the braking surface under extreme heat. Every rotor is heat treated and precision balanced prior to shipment for consistent, reliable performance.

Aircraft-Grade Billet Caliper Construction:

Calipers are CNC machined from a single solid billet of aircraft-grade aluminum — not cast or welded — providing perfectly uniform wall thickness and unparalleled structural rigidity. At just over 5 lbs. each, the calipers deliver exceptional strength-to-weight ratio. The opposed piston design improves pad wear evenness and caliper rigidity compared to OEM floating-style calipers. Standard features include aluminum pistons for superior heat resistance, high-temperature seals, machined-in bridge tube protection grooves, and stainless steel brake pad wear plates.

Rotor Style — Cross Drilled:

Cross drilled rotors dissipate heat and brake gases efficiently, running cooler than slotted designs and making them the preferred choice for daily-driven performance vehicles. The unique slot pattern also expels gas and pad debris faster than conventional designs to maintain a clean, consistent braking surface.

D.O.T. Compliant Stainless Steel Brake Lines:

Included stainless steel braided brake lines are D.O.T. compliant and eliminate hose expansion under pressure, delivering a firmer pedal feel and quicker brake response compared to OEM rubber lines.

Key Features:

• Caliper options available: 4, 6, or 8 piston configurations
• 12 in. (304 mm) cross drilled two-piece floating rotor
• CNC machined one-piece aircraft-grade billet aluminum calipers (~5 lbs. each)
• Opposed piston caliper design for improved pad wear and rigidity
• Aluminum pistons with high-temperature seals
• Stainless steel brake pad wear plates standard
• D.O.T. compliant stainless steel braided brake lines
• Floating rotor prevents thermal warping and cupping
• Two-piece rotor assembly reduces rotating and unsprung weight
• All rotors heat treated and balanced before shipment
• Bolt-on installation — minimal tools required, no vehicle modifications needed
• Compatible with OEM ABS systems
• 12-month manufacturer defect warranty

Ksport big brake kits are built to order. Cross drilled rotors are recommended for street and daily-driven performance applications. For vehicles with frequent track use, a slotted rotor configuration is also available.