SPL Parts PRO Solid Aluminum Subframe Bushings (SSB) replace the stock mushy rubber bushings to eliminate free play of the subframe relative to the chassis. This prevents the subframe from "bouncing around" under drivetrain torque or suspension load, maintaining optimum suspension geometry and reducing wheel hop. Our slide-in shim system allows you to quickly raise or lower the subframe to fine-tune the roll center/anti-squat behavior to your preference. Raising the subframe will compensate roll center for a lowered car at the expense of increasing anti-squat. Lowering the subframe will decrease anti-squat at the expense of roll center.SPL Parts SOLID Series Bushings are precision CNC machined from Billet 6061-T6 Aluminum for an accurate fit. Our kit also includes optional rubber isolation washers to reduce noise transfer from the subframe to the chassis. Sold as complete kit for one car. Made in the USA. Application List: 1990-1996 Nissan 300ZX (Z32) 1989-1994 Nissan Skyline (R32) 1994-1998 Nissan Skyline (R33) 1999-2002 Nissan Skyline (R34) Installation Instructions: SPL Solid Subframe Bushings
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