Ksport BKNS080-621CO Floating Rotor Big Brake Kit with 4, 6, or 8 Piston Caliper Options

The Ksport BKNS080-621CO is a high-performance big brake kit featuring a full-floating 2-piece rotor assembly with your choice of 4, 6, or 8 piston caliper configuration. Engineered to significantly reduce brake fade while continuously cooling and refreshing the brake pad surface under sustained braking, this kit delivers exceptional stopping power for both street and track use.

The floating disc design allows the outer rotor section to shift slightly as needed for better self-centering in the caliper, lowering brake drag and promoting more even pad application. Critically, this floating design also prevents thermal stresses from warping the disc or cupping the braking surface under extreme heat conditions.

Caliper Construction:

• CNC machined from a single solid billet of aircraft-grade aluminum — no casting or welding
• One-piece construction provides perfectly even wall thickness and superior structural rigidity over OEM designs
• Opposed piston design greatly improves pad wear and caliper rigidity
• Differential bore configuration for balanced clamping force
• Machined-in protection grooves for bridge tubes
• Weighs just over 5 lbs. each — up to 50% lighter than comparable OEM calipers
• Aluminum pistons with high-temperature seals for superior heat resistance
• Stainless-steel brake pad wear plates standard on all caliper designs

Rotor Features:

• 2-piece floating disc assembly reduces both rotating and unsprung weight
• Available in Cross Drilled or Slotted rotor styles
• Unique slot design expels gas and pad debris faster than conventional slot designs while minimizing braking noise
• Every rotor is heat treated and balanced prior to shipment
• Cross drilled rotors recommended for daily-driven vehicles; slotted rotors recommended for track-focused use

Brake Lines & Hardware:

• D.O.T.-compliant stainless-steel braided brake lines included standard
• Stainless-steel lines resist expansion under pressure for a firmer, more responsive pedal feel
• CNC machined carbon steel caliper brackets included for direct bolt-on installation

Brake Pads:

• NAOC Ceramic street pads (SC5) included — optimal operating range 194°F to 1,022°F
• Ceramic compound reduces brake dust by 50% or more compared to race pads
• Optional RC1 carbon metallic race pads available (optimal range 482°F to 1,472°F — not recommended for street use)

All Ksport Big Brake Kits are backed by a 12-month manufacturer's defect warranty and are compatible with OEM ABS systems. Kits are built to order — please allow 4–6 weeks for production and delivery.