Wilwood 140-17574-D UTV6 Rear Disc Brake Kit with 11.25" Dynamic Mount Rotors

The Wilwood 140-17574-D is a UTV6 Rear Disc Brake Kit engineered for high-performance side-by-side machines. Featuring 11.25" (285mm) diameter dynamically-mounted, lug-drive non-vented rotors and a six-piston forged aluminum caliper, this kit delivers a significant braking upgrade over OEM systems — ideal for higher-powered UTVs that demand more stopping force under demanding trail and race conditions.

Key Features:

• Forged aluminum differential-bore six-piston caliper reduces deflection and delivers more uniform pad engagement for increased braking force and improved pedal feel
• 11.25" diameter floating rotors are up to 20% larger in diameter and thicker than stock, providing greater brake torque and reduced thermal distortion
• Dynamically mounted rotor design minimizes thermal stress and prevents piston knockback caused by rough terrain and trail impacts
• Fixed-mount multi-piston caliper with greater clamping force for more consistent, high-friction braking performance
• Lug-drive rotor interface for secure, positive rotor location
• Compatible with stock OEM master cylinder — no master cylinder upgrade required
• Designed to fit most 15" diameter wheels and larger

Wilwood's UTV brake kits are engineered as matched front and rear systems, ensuring balanced brake bias across both axles. The 140-17574-D rear kit pairs with Wilwood's UTV6 front brake kits for a complete big brake upgrade solution. All hardware is precision-machined and assembled to Wilwood's exacting standards at their Camarillo, California facility.