Max Trac Suspension's Part# 430020 Is A Pair Of Aluminum 2" Lowering Blocks W/ U-Bolts Front / Rear: Rear Rear Lift / Lower Inches: 2 Fitment Notes: Max Trac Suspension Does Not Recommend Using Wheels Wider Than 9" Or Wheels With Less Than 4.5" Backspacing. Doing So Will Result In Voiding Any And All Manufacturer Warranties. Vehicle Fitment: 1982-1997 Chevrolet Blazer 2WD, 1982-2004 Chevrolet S-10 2WD, 1982-1997 GMC Jimmy 2WD, 1982-2004 GMC Sonoma 2WD .