Your Shopping Cart Continue shopping “Springfield KingPin™ 7″ x 7″ Stainless Steel Square Base (Threaded)” has been added to your cart. Item Your Options Quantity Price Springfield Seat Suspension System Springfield Seat Suspension System quantity $141.99 × Springfield KingPin™ 7" x 7" Stainless Steel Square Base (Threaded) Springfield KingPin™ 7" x 7" Stainless Steel Square Base (Threaded) quantity $74.99 × Coupon: Apply coupon Update cart Continue Shopping Cart totals Subtotal $216.98 Sales Tax $13.02 Total $230.00 Proceed to checkout