I have for sale a bolt on sub belt mount for a sparco seat base for an S550. If you have a sparco base but no way to weld a rod underneath the base to use wrap around sub belts, this will solve that issue. Easy to install, just have to drill four 5/16" holes in sparco base and use supplied bolts to install on the bottom side of base. Rod is 5/8" in diameter and powder coated black. May fit other bases. Total width is 12.5". Can be used with my lap belt mount. $70 shipped for one or $110 shipped for two.
Last edited: