TKR7040 – Shock Spring Set (front, 1.4×8.125, 4.82lb/in, 50mm, black) Vehicle Compatibility • TKR7040 - Shock Spring Set (front, 1.4x8.125, 4.82lb/in, 50mm, black) is not included with any kit. • This can be used with the SCT410SL vehicle and should be a direct replacement for the stock part or used as a feature. Please use the instruction manual for the kit(s) listed to verify compatibility and no additional items are necessary before purchasing.Click the link above to view other parts.