Adjustable Camshaft Cam Gear Pulley Sprocket Purple For 1989-2002 Nissan Skyline100% Brand New Items, Never Used Or Installed High Performance 2 Piece Adjustable Cam Shaft Gears Made from 100% Super Light Weight Aluminum For Reduced Rotation Mass For Faster Response High Quality Grade 10. 9 Heavy Steel Bolts Used For Long Life Expectancy All Cam Gears Have Been Quality Checked After Production Etched Marked For Quick Timing Reference And Tuning Ideal For Milled Head And Block Where Timing Will Be Affected Will Make Custom Timing