Swift Bulletproof Series 5" OD x 20" Tall Rear Coil Spring - 100 lb. PRC9372-SC Internal upright is a 3/4"

Internal upright is a 3/4" diameter aluminum extrusion with a bright satin anodized finish

1/2 in Tube OD

Fits SA/SP122A

Suede Leather Heat Guard on back of both arms and around shoulders for added protection

Swift Bulletproof Series 5" OD x 20" Tall Rear Coil Spring - 100 lb. PRC9372-SC Internal upright is a 3/4"Product Description: Coil Spring Bulletproof Series Conventional 5 in OD 20 in Length 100 lb in Spring Rate Rear Steel Copper Powder Coat Sold Individually Swift Springs was founded in 1997 in Tokyo Japan as a motor sports division of Tokyo Hatsujo Manufacturing Co, Ltd. that has been leading the spring industry since 1924. The purpose was to demonstrate Swift Springs superior engineering in spring by developing the next generation of motor sports