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The Prothane spring and shackle bushing kit is a rear suspension replacement set for 1981–1987 GM K30 applications, supplied in red. The kit includes rear spring and shackle bushings plus a 1 3/8-inch outer-diameter frame shackle bush to match the listed fitment. It serves as a like-for-like replacement during rear suspension refresh or maintenance when original bushings show wear.
Prothane 81-87 GM K30 Rear Spring & Shackle Bushings (w/ 1 3/8in OD Frame Shackle Bush) - Red
