QA1 Adjustable Upper Trailing Arms - 1978-1987 Pontiac Bonneville XJ In the end

In the end

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Part Number ISC-M120B-T Part Name Basic V2 Track Race Coilovers Vehicle 1989-1998 Mazda MX-5 Miata Chassis Code NA Spring Rates - Front 10 kg/mm Spring Rates - Rear 8 kg/mm Spring Length - Front 180mm Spring Length - Rear 180mm Top Mounts - Front Factory like rubber top plates or re-use OE strut/shock mounts Top Mounts - Rear Factory like rubber top plates or re-use OE strut/shock mounts Ride-Height Adjustable Yes Damping Adjustment 1-Way Quantity Full Set (Front & Rear) Vehicle Fitment

QA1 Adjustable Upper Trailing Arms - 1978-1987 Pontiac Bonneville XJ In the endAll Upper Tubular and Lower Boxed Trailing Arms for the 1978 1987 Pontiac Bonneville use polyurethane bushings on both ends, while upper adjustable and lower tubular Trailing Arms use a spherical ball or rod end assembly on the chassis end to eliminate bushing bind, allowing the suspension to move smoother for better control. This keeps the tires planted firmly on the ground for improved traction and a more predictable, better handling car. For a long