Speed Karts 10.8 Valve Spring Set Item Number: SKVS Price: $19.00 Add to Cart Description Formally the Race City valve spring set, this product is often referred to as the "speedy king". Now produced by Speed Karts, this 10.8 lb valve spring set works with the stock clone. Accessories Lightweight Intake Retainer Lightweight Exhaust Retainer Lightweight Lifter, Clone DynoCams 900 Top End Pipe, Clone DynoCams Dyno Mite Racing Oil, Gallon