Want to reduce bushing deflection and change out your tired OEM rear knuckle bushings? We have the solution. We have made replacements, however, they are a spherical bushing rather then a polyurethane or rubber bushing to significanty reduce bush deflection and ensure a much smoother operation throughout the range of suspension travel. As with all of the bearings that we use throughout our suspension arms, these spherical inserts use common sized bearings which essentially makes them rebuildable at a very low cost should the need arise. Fits all S/R chassis OEM rear knuckles with 30mm or 30.5mm O.D. Most rear knuckles are 30mm outside diameter but we do recommend measuring before purchasing. Sold as a pair. For Non HICAS equipped cars, 3 pairs will be required. HICAS equipped vehicles will require just 2 pairs. Vehicle Compatibility: - Nissan S13 240sx - Nissan S13 Silvia - Nissan S14 240SX - Nissan S14 Silvia - Nissan S15 Silvia - Nissan Skyline R32 GTS - Nissan Skyline R32 GTS-T - Nissan Skyline R32 GTR - Nissan Skyline R33 GTS - Nissan Skyline R33 GTS-T - Nissan Skyline R33 GTR - Nissan Skyline R34 GTT - Nissan Skyline R34 GTR - Nissan C33 - Nissan C34 - Nissan C35 - Nissan A31 Cefiro - Nissan Z32 300ZX