(2) Rear Lowering Shackles. (2) 2" Front Drop Spindles. HD Suspension 1988-1998 Chevy GMC C1500 2" Front / 4" Rear Lowering Drop Kit. Give your 1988-1998 Chevy or GMC C1500 pickup an aggressive lowered stance while maintaining excellent ride quality with this premiumHD Suspension 2" Front / 4" Rear Lowering Kit.