Callies Magnum Crankshaft - SB Chevy - 4.000" Stroke - 2.100" Pin - 400 Main 2.648" BR20031 ALL68320 attaches to the side

ALL68320 attaches to the side bell bolts on most quick change rear ends

ST4 / ST5 Helmets

With the exception of CVT fluids and Duel Clutch Fluids (DCT)

For fuel injected applications

Callies Magnum Crankshaft - SB Chevy - 4.000" Stroke - 2.100" Pin - 400 Main 2.648" BR20031 ALL68320 attaches to the sideA combined effort by Callies CNC programming and engineering staffs has resulted in a component that is distinctive and highly functional. Unique counterweight and rod arm contours produce a lightweight, aero efficient crankshaft. Callies Series II Mangnum Mass Correct counterweights have been placed specifically to reduce bearing loads. By concentrating mass at the point of imbalance, the transfer of rotating and reciprocating assembly weight loads