Crankshafts

Flywheel bolts that fit our race billet crankshafts that have 1/2-20 threads Your flywheel will need to be machined to fit bolts. These will not work on standard SR20 crankshafts.

This is the crankshaft we use in our Pro Drag SR20 engines making over 2000+hp.  This crank was specifically designed for this application for strength and durability.  The factory stroke allows us to have a better rod ratio for reduced piston scuffing at high boost and a larger connecting rod for strength.  We also implemented the direct oil holes for the connecting rods.  With increased boost comes increase vibrations in a 4 cylinder.  So we increased the flywheel...

Update your R32 RB crankshaft with this extended collar. The original collar on the R32 cranks only engaged the oil pump 1/8" which has the tendency of breaking the pump. When you install this collar, it will engage the oil pump the full length. Machine work is necessary and can be provided.

Brand new OEM 86mm SR20DET Crankshaft.

Features: - 92mm Stroke - 30.4 lbs, 10 lbs ligher than factory 8 counterweight crank - Billet 4340 Chrome-moly - Shot Peened, Heat-Treated, and Nitrated - Direct Drilled Oiling Holes - Knife-edged and drill for lightweight - Recommended for NA applications ...

Features: - 91mm Stroke - Billet 4340 Chrome-moly - Shot Peened, Heat Treated, and Nitrated - Tear Drop Main Oiling Holes - Recommended for Turbo applications