Swift Rear Coil Spring - Bulletproof - 5.0" OD x 13" Tall - 100 lb. 931111 The wider plug gaps will

The wider plug gaps will allow more spark energy into the combustion chamber providing a better burn of the fuel mixture and increasing horsepower

5 PSI) the FAST Precision Flow 240 lb/hr Fuel Injectors are some of the highest flowing injectors available

2007 GMC Sierra 1500 Classic Fleetside 78

Durable powder coat design sheds water and provides a long lasting rust free finish

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Swift Rear Coil Spring - Bulletproof - 5.0" OD x 13" Tall - 100 lb. 931111 The wider plug gaps willINCREASE TRACTION, LESS UN SPRUNG MASS, MORE STROKE, INCREASED HANDLING. THE ONLY THING YOU WILL BE LOSING IS TRACK TIME. Swift Springs manufactures springs with differing rates for a variety of circle track racing applications. With options for both dirt and asphalt tracks, Swift has a wide range of coil spring formats, including coil over, dual rate, bump springs, and more. Swift Springs superior engineering has provided the next generation of