PAC Racing RPM Series Valve Spring Dual Spring 409 lb/in Spring Rate 1.000" Coil Bind - 1.290" OD RS004C1512 All inline tees have 1/2"NPT

All inline tees have 1/2"NPT threads for probe fittings and 1/4" holes for mounting

4-Bolt Mains

20 AN Female O-Ring Inlet

Pit Stop USA offers Bilstein SZ/SL Series Shock - 7" Stroke - Compression 4 - Rebound 12 33-321769 at low everyday prices

Fuel injected engines: E85 up to 2380 FWHP - naturally aspirated up to 1820 FWHP - forced air induction

PAC Racing RPM Series Valve Spring Dual Spring 409 lb/in Spring Rate 1.000" Coil Bind - 1.290" OD RS004C1512 All inline tees have 1/2"NPTProduct Description: Valve Spring RPM Series Dual Spring 409 lb in Spring Rate 1. 000 in Coil Bind 1. 290 in OD GM LS Series 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