The N1 RB26DETT crankshaft is stronger than the original crankshaft that came on the RB26,  with revised stronger forging & extended oil pump snout this is the absolute must have when building a competition RB26. 
 
These are a rare and hard to find part...usually on special order from Japan.  Please feel free to contact us in advance to check for availability.
 
Part #12200-05U03