Endurance Plus Dual Valve Springs with Damper (16) 1.560" OD ISK9385-PLUS Product:245LBS @ 2.000" Seat Pressure, 600LBS @ 1.280" Open Pressure, 1.180" 130" raised 75cc exhaust ports

130" raised 75cc exhaust ports Available with 60cc or 70cc combustion chambers 70cc combustion chambers are ideal for turbocharged and supercharged applications CNC gasket-matched port entries/exits with blended valve bowls Spark plug holes and valves are in the stock location Valve cover rail raised

Black Crinkle

Pro-Gram Engineering 4-Bolt steel main bearing center caps

4010-8388R

and lighting

Endurance Plus Dual Valve Springs with Damper (16) 1.560" OD ISK9385-PLUS Product:245LBS @ 2.000" Seat Pressure, 600LBS @ 1.280" Open Pressure, 1.180" 130" raised 75cc exhaust portsEndurance Plus Dual Valve Springs with Damper (16) 1. 560" OD245LBS @ 2. 000" Seat Pressure, 600LBS @ 1. 280" Open Pressure, 1. 180" Coil Bind ISK9385 PLUS K9385 PLUS The Endurance Plus series of valve springs utilises a specially processed Tool Room Material for increased endurance and reliability beyond the "SP" series plus special processing for increased durability. Endurance Plus springs are designed for late models, modifieds, etc and are