Designed for riders who demand maximum braking performance on both street and track, these Supersport floating brake discs feature a high-carbon stainless steel rotor paired with a CNC-machined aluminum carrier. With a race-spec 5.5mm thick, 34mm wide friction surface, the fully floating design reduces thermal stress, improves heat dissipation, and delivers consistent braking under extreme conditions. Direct OEM replacement with no modifications required. Sold as a pair.
Kawasaki Ninja ZX-4RR
Engineered for riders who push their machines to the limit, the Supersport Floating Brake Disc Kit delivers uncompromising braking performance for both aggressive street riding and track use. Developed specifically for modern European and Japanese hypersport motorcycles, this kit offers superior heat management, reduced wear, and consistent braking feel under extreme conditions.
At the core of the system is a fully floating rotor design, allowing the brake rotor to move independently from the aluminum carrier. This floating configuration significantly reduces thermal stress and warping, improves heat dissipation, and maintains optimal pad contact during heavy braking. The result is smoother modulation, increased longevity, and confidence-inspiring stopping power when it matters most.
Each rotor is manufactured from high-carbon martensitic stainless steel, chosen for its exceptional resistance to thermo-mechanical stress. With a race-spec thickness of 5.5mm and a wide 34mm friction surface, these discs provide increased mass and stability compared to OEM components, making them ideal for high-speed riding, repeated hard braking, and track sessions.
The rotors are paired with a CNC-machined billet aluminum carrier (hat), precision-designed to reduce unsprung weight while maintaining strength. The rotor and carrier are joined using 10 fastener studs in true racing style, allowing controlled float and consistent performance lap after lap.
Designed as a direct replacement for the original brake discs on the Ninja ZX-4RR, this kit installs without any permanent modifications. When upgrading to an oversized rotor setup, spacers may be required.
Fully floating brake disc design for reduced stress and improved heat dissipation
High-carbon martensitic stainless steel rotor for extreme durability
5.5mm thick rotor with a 34mm wide friction surface for increased braking stability
CNC-machined billet aluminum carrier for reduced weight and race-level strength
Improved braking consistency, modulation, and rotor lifespan
Direct OEM replacement – no modifications required
Suitable for aggressive street riding and track use
Rotor Material: High-carbon stainless steel
Carrier Material: CNC-machined aluminum alloy
Rotor Thickness: 5.5mm
Friction Surface Width: 34mm
Design: Fully floating
Fitment: Kawasaki Ninja ZX-4RR
Quantity: Sold as a pair (left and right)
Built for riders who refuse to compromise, the Supersport Floating Brake Disc Kit is the perfect upgrade for those seeking race-proven performance, reliability, and precision braking from their Ninja ZX-4RR.
