King Alecular SI Main Bearing - Standard - GM LS-Series Roll Cage Main Hoop or limit spark advance in

or limit spark advance in high compression engines and high load conditions to eliminate knock

The Finned Cast Aluminum design provides an awesome nostalgic look available Polished or Black powder-coat to compliment the rest of your engine's accessories

This allows wrap-up and then the unwinding of the spring quicker and with more consistency

Front Springs Only

King Alecular SI Main Bearing - Standard - GM LS-Series Roll Cage Main Hoop or limit spark advance inMain Bearing Set For GM Vortec LS Series Gen III IV. Bimetal (Aluminum Silicon Base) . We are bearing specialists. King Engine Bearings was founded in 1960 with one simple objective: to supply the highest quality bearings available in the marketplace. By specializing in engine bearings, King has built an extensive product offering that includes a wide range of engine bearings for automobiles, light duty and heavy duty trucks, marine, aviation, standby