As used on the Stage 1 turbo kits for the NB, this simple wheel replaces the stock trigger wheel on the crank nose. Unlike the stock piece, it leaves a bit of room for adjustability. The ignition can be retarded by up to 8 degrees or advanced by 4 degrees.
Adjustment consists of simply loosening four bolts on the crank and rotating the wheel. An indicator shows you just how much you're retarded or advanced compared to stock.
Suits NB 1998-2004