Compstar Mitsubishi 4G63 Forged Crank 7-Bolt, Knife Edged, 88mm Stroke, 57mm Main, 45mm Pin

Designed for Maximum Effort engines, all SS (Sport Series) crankshafts are finished with the same care and detail as the entire line of Compstar crankshafts. All SS cranks are sold balanced and ready for assembly. SS crankshafts by Compstar feature the best metallurgy and heat treatment on the market today.

Standard Features

• 8 counterweight design
• 4340 steel certified by Callies in house Metallurgical lab
• Ultra-Case nitriding performed and certified by Callies
• Rod and main journal surface finish refined to 4Ra or less
• All journals ground with strength enhancing Tru-Form radii
• Limited stroke availability
• Aeroshed finishing optional