THIS KIT FITS ANY TIRE SIZE
 
22.5 Low, 22.5 Tall, 24.5 Low, 24.5 Tall
 
Includes: 
(1) BBBM-4UDS
(1) BBBM-4UPS
(1) Set of Rear Half Fender Brackets: Part # RHB
(12) 3/8 x 1 1/4 Stainless Bolts, Nuts and Washers: Fender Mounting
(2) 1x9 Fine Thread Grade 8 Suspension Bolts and Nuts
(2) TALL Adjustment Plates
(6) 3/8 x 1 1/2 Bolts, Nuts and Washers
 
***1x9 replacess OEM Suspension Bolt Needed To Mount Brackets
 
4U is adjustable to all tire sizes for old low air Peterbilts.