Radius Arm Bush Kit Blue - NRC4514PBB - Polybush Why fit Polybush? Impressive and Confident Ride - Excellent Noise Damping - Controlled Suspension Movement - Sharper Turn in - Predictable Cornering - Reduced Body Roll - Fit & Forget - Excellent Longevity - Designed & Engineered to Exact Specifications - Pure Materials, Immense Flexibility & Resilience. Polybush Comfort - Blue - Polybush Comfort - Superb ride quality and beautiful manners on and off road. Polybushes most compliant grade provides excellent longevity and greater shock absorption with a factory fresh feel. Polybush Performance - RED - The ideal up rate. Polybushes stiffest grade gives you precise steering and a controlled ride at all speeds. The ideal solution for fast road, track and towing. Polybush Dynamic - Orange - Excellent balance between ultimate stiffness and elasticity. Polybush Dynamic bushes are strong enough to withstand loadings but flexible enough to ensure a smooth ride.