EZGO 70506G01 Heavy Duty Rear Leaf Spring Set-4 Leaf Used on 1994-current E-Z-GO Gas & Electric 4-Caddy, Shuttle 2+2, Medalist, TXT, Workhorse-MPT (Multi-Purpose Truck), Clays Car, and ST models Leaf Springs are recommended for use on vehicles with a rear seat kit, lift kit, heavy off-road use, and when adding any weight to your vehicle. You must upgrade to longer U-bolts (Part# 72618G01) for this leaf spring, and new bushings - 8 (Part# 70291G01) are also recommended 2 leaf springs are required per car