The Bullet RB30Sx (Street Extreme) to suit Nissan RB bolt-up applications is the same as our regular RB30 Billet Block but with a larger main tunnel to accept our larger main bearing custom crankshafts. It has been designed to suit applications producing 2500hp+.
The addition of the larger main shaft increases the strength of the crankshaft and remedies the under engineered RB30 OEM sized crankshaft problems in the high output applications. The large main shaft crankshafts are available in two strokes 90mm & 94.5mm. Capacities up to 3.6 litres can be achieved using the RB30Sx.
Distortion of cylinder bores and crank tunnel is dramatically reduced through design improvements and a Bullet 4 bolt main cap system. This product offers significant weight savings and delivers scope to create large displacement RB engines.