Maximum performance in the 1, 500-6, 500 RPM range for high performance street

1. 90 inch intake valves are for use with stock pistons

Exhaust valve is 1. 60 60cc combustion with 170cc intake port Will not accept rail rockers This component is built for dependable performance and straightforward installation in compatible applications. Quality materials and precise engineering help deliver consistent results whether used for maintenance, upgrades, or specialized vehicle systems.