Swift Bulletproof Coil-Over Spring - Conical - Bulletproof - 2.5" ID - 5" OD on one end  - 18" Tall - 80 lb. 4122BU 275" thick-walled Hi-Silicon ductile casting

275" thick-walled Hi-Silicon ductile casting

2014-2014 Chevrolet Express 2500

KIT Contains

Hydraulic - High Energy: Performance with slight rough idle in 396

Swift Bulletproof Coil-Over Spring - Conical - Bulletproof - 2.5" ID - 5" OD on one end  - 18" Tall - 80 lb. 4122BU 275" thick-walled Hi-Silicon ductile castingCompresser 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