PAC Racing Hot Rod Series Valve Spring Dual Spring 391 lb/in Rate 1.050" Coil Bind - 1.459" OD HASZF20PP They are upgradeable to adjustable

They are upgradeable to adjustable shafts and can be converted to a coilover (kit sold separately)

They feature Bilstein's superior single-tube

Mandatory in FIA Karting Championships

Designed with 2 and 3 barbed ends to create the connection

PAC Racing Hot Rod Series Valve Spring Dual Spring 391 lb/in Rate 1.050" Coil Bind - 1.459" OD HASZF20PP They are upgradeable to adjustableProduct Description: Valve Spring Hot Rod Series Dual Spring 391 lb in Spring Rate 1. 050 in Coil Bind 1. 459 in OD Set of 16 PAC Racing Springs is part of the Race Winning Brands Family. With more than 100 years of spring manufacturing experience. We understand the demands of racing and provide a commitment to all of our customers to provide the best service possible. We continue to expand products and offer expanded onsite technical services at