Ksport BKMZ090-621CO Floating Rotor Big Brake Kit with 4, 6, or 8 Piston Caliper Options

The Ksport BKMZ090-621CO is a high-performance big brake kit featuring a two-piece floating rotor design and your choice of 4, 6, or 8 piston caliper configurations. Engineered to dramatically reduce brake fade and deliver consistent stopping power under demanding street and track conditions, this kit integrates advanced brake technology that continuously cools and refreshes the brake pad surface during braking.

Floating Rotor Design:

• Two-piece floating disc assembly reduces both rotating and unsprung weight
• Floating outer section shifts slightly as needed for better self-centering in the caliper
• Prevents thermal stress from warping the disc or cupping the braking surface under extreme heat
• Unique slot pattern expels gas and pad debris faster than conventional designs while minimizing brake noise
• Every rotor is heat treated and balanced prior to shipment for consistent, reliable performance

Caliper Construction:

• CNC machined from a single billet of aircraft-grade aluminum — no casting or welding
• Differential bore configuration for optimized pad contact and wear
• Machined-in bridge tube protection grooves for added durability
• Weighs just over 5 lbs. each for significant unsprung weight savings
• Opposed piston design improves pad wear evenness and caliper rigidity over OEM
• Aluminum pistons with high-temperature seals for heat resistance under race conditions
• Stainless steel brake pad wear plates standard on every caliper

Brake Lines & Hardware:

• D.O.T.-compliant stainless steel braided brake lines included
• Stainless steel lines eliminate hose expansion under pressure for a firmer, more responsive pedal feel
• CNC machined carbon steel caliper brackets for a direct bolt-on fit to OEM mounting locations

Rotor Style Options:

• Cross Drilled: Runs cooler — recommended for daily driven street vehicles
• Slotted: Superior heat and gas dispersal — recommended for track-focused applications

Compatible with OEM ABS systems. Designed for straightforward installation with minimal tools required in most applications.