Whiteline Rear Subframe Mount Inserts Poly Bush Kit – Polyurethane Rear Cradle/Crossmember Bushings – Reduce Wheel Hop, Improve Traction & Handling – Performance Suspension Upgrade for Track & Fast Road

Transform rear-end stability and cornering confidence with this premium polyurethane rear cradle insert kit from Whiteline. Ideal for fast-road and track-day builds, this performance suspension upgrade tightens up the rear chassis assembly for sharper handling, improved traction and consistent geometry under load.

By swapping the factory rubber elements in the rear crossmember for high quality poly inserts, the kit limits unwanted compliance, keeps alignment true during hard acceleration and braking, and delivers a more connected feel through the back of the car. The result is crisper turn-in, better power delivery out of bends and a more planted, predictable drive.

• Reduces wheel hop and axle tramp for cleaner launches
• Enhances rear-end precision and driver feedback
• Helps maintain crossmember alignment under cornering loads
• Durable polyurethane construction for long-lasting performance
• Perfect for track use and spirited road driving

We have installed this kit on customer cars and our own builds, and the feedback is consistently positive. Expect tighter rear control, improved stability and a noticeable boost in confidence when pushing on.

Why choose this handling upgrade

• Performance suspension enhancement without changing springs or dampers
• Rear cradle lock-style feel while retaining road manners
• Proven solution for taming drivetrain shudder and hop during hard launches

Professional fitting available

We recommend professional installation and a precision alignment after fitment. Book with MJ Modifications in Warwickshire for a hassle-free service. Email info@mjmodifications.co.uk for a fitting quote and availability.

Upgrade your chassis now for tighter handling, improved traction and a more engaging drive.