POWERFLEX Black Series Bushes for Nissan 200SX S13 and S14, Rear Trailing Arm 50 mm n° 7 Powerflex is the market leader in high performance suspension bushes with a wide, fast-growing product range that combines performance, durability and safety. For the ultimate in performance, Powerflex has created the Black Series, a new range of bushes for Race, Rally and Circuit use. Made from an innovative compound that grants maximum control of chassis geometry, the Black Series is up to 80% more resistant to load than rubber and 25% stiffer than purple bushes. For best results, you should verify your wheel alignment after changing your bushes. Easy to mount, no need for special tools. Length: 50 mm Diameter: 31.25 mm Sold by set of 4.