Wilwood 140-16627-R UTV4 Rear Disc Brake Kit with 4-Piston Caliper and Floating Rotors

The Wilwood 140-16627-R UTV4 Rear Brake Kit is a direct bolt-on upgrade engineered for high-performance side-by-side machines. Designed to work seamlessly with the Wilwood 140-16626-R UTV6 Front Brake Kit (sold separately), this rear kit delivers significantly improved stopping power over stock brakes for higher-powered UTV applications.

At the heart of this kit is a forged aluminum differential-bore 4-piston caliper in a red powder coat finish. The differential-bore piston design reduces caliper deflection and promotes more uniform pad engagement across the rotor face, translating to greater braking force and improved pedal feel on demanding terrain.

The kit uses 11.25-inch diameter dynamically-mounted steel floating rotors that are up to 20% larger in diameter and thicker than OEM rotors. The dynamic mounting system allows the rotor to float, reducing thermal stress during hard use and preventing piston knockback caused by suspension articulation and rough terrain impacts.

Key Features:

• Forged aluminum differential-bore 4-piston UTV4 caliper (red powder coat)
• 11.25" dynamically-mounted steel floating rotors — up to 20% larger diameter than stock
• Thicker rotor construction for reduced distortion and improved thermal capacity
• Fixed-mount caliper design with increased clamping force for more brake torque
• Dynamic rotor mounting reduces thermal stress and prevents piston knockback
• Compatible with Wilwood 140-16626-R UTV6 Front Brake Kit (sold separately)
• Designed for OE factory spindles

This rear brake kit is part of Wilwood's matched UTV brake system, purpose-built to handle the demands of powerful side-by-side machines where OEM brakes fall short. Complete hardware for a clean, professional installation is included.