Swift Bulletproof Coil-Over Spring - Conical - Bulletproof - 2.5" ID - 5" OD on one end x 18" Tall - 100 lb. YA0828MM10 2007-2009 GMC Sierra 2500 HD

2007-2009 GMC Sierra 2500 HD

and other components

1979-1990 GMC C6000

* Performer RPM Cylinder Heads have all of the same great features as our Performer series heads

which does not allow for any adjustment and consequently there is no consideration for different cam sizes or other modifications to the engine block and heads

Swift Bulletproof Coil-Over Spring - Conical - Bulletproof - 2.5" ID - 5" OD on one end x 18" Tall - 100 lb. YA0828MM10 2007-2009 GMC Sierra 2500 HDCompresser beyond coil bind straight when compressed. More useable stroke then a straight spring. commonly used on front front for Asphalt or Left Rear on dirt. PURPOSE BUILT FOR THOSE OF YOU PUTTING MORE STRESS ON A SPRING THAN HOW IS CONVENTIONALLY USED. WE SOUGHT AFTER A NEW APPROACH IN DEVELOPMENT FROM OUR REGULAR SUSPENSION SPRING. Swift Springs manufactures springs with differing rates for a variety of circle track racing applications. With