Spring Sleeve Kit for 9/16" Shackle Bolts, 88-91 Blazer. Required for 1988-91 model solid axle GM vehicles, which have a 9/16" diameter bolt at the front leaf springs' shackle eye end. Superlift lift kit bushing sets include sleeves for 7/16" diameter bolts, which are found on 1973-87 models. Includes two sleeves.
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