Isky Cams Tool Room Dual Spring / Damper Valve Spring - 470 lb/in Spring Rate - 1.170 in Coil Bind - 1.560 in OD - Set of 16 BR30004 Control arms are built with

Control arms are built with a medium alloy tube

205 in Thick

Distinctive "RED" logo

Tube Tool Mount

The ONLY correct fitting to use is a contoured port fitting with an O-ring seal such as :Part # AT985008ERL

Isky Cams Tool Room Dual Spring / Damper Valve Spring - 470 lb/in Spring Rate - 1.170 in Coil Bind - 1.560 in OD - Set of 16 BR30004 Control arms are built withTest proven for 1000 racing miles, Precision Tool Valve Springs feature the highest quality alloy wire and trade secret endurance processing. Great for Super Modifieds, ARCA, Grand National, NASCAR Trucks, Cup and applications up to 8800 RPM. As the world's largest racing, performance, and economy cam manufacturer, Isky maintains a dynamometer testing program for constant improvement of camshaft and valve train design. These tests are conducted daily