Swift Rear Coil Spring - 5.0" OD x 13" Tall - 250 lb. R10004XL -4 AN to 12mm x

-4 AN to 12mm x 1

Another great feature of the Ready-to-Run Distributors is their simple installation

Roller on one end makes measurements easier

boost scramble duty

MSD Mechanical Advance Distributors

Swift Rear Coil Spring - 5.0" OD x 13" Tall - 250 lb. R10004XL -4 AN to 12mm xDEVELOPED SPECIFICALLY FOR ROUND TRACK RACING. DESIGNED TO HAVE THE OPTIMAL SPRING RATE SWEET SPOT WHERE THE SPRING IS USED ON ACTUAL VEHICLE. 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