Swift Bulletproof Coil-Over Spring - Conical - Bulletproof - 2.5" ID - 5" OD on one end  - 18" Tall - 80 lb. 4101XXLBK The Mainline Purge System is

The Mainline Purge System is designed to purge the air from your nitrous lines to allow immediate activation of your Nitrous system

There is a triple layer anterior toe area for added wear protection with additional reinforcements in the heel and lace guard with double speed-fit closer

CSR Side Harness

Fits Most Stamped Covers

Spring loaded for easy one person use

Swift Bulletproof Coil-Over Spring - Conical - Bulletproof - 2.5" ID - 5" OD on one end  - 18" Tall - 80 lb. 4101XXLBK The Mainline Purge System isCompresser 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