Nissan RB25 & RB30 Harmonic Crankshaft Balancer Bolt interior/exterior *Brace comes with bolt kit

*Brace comes with bolt kit in any of the 4WD/ 2WD configurations for the RB25/ 26 type 4WD

however tuning & recalibration is likely required

Choice of Springs from 3psi to 26psi (Optional)

Its staged operation ensures enough air is recirculated back through the intake to keep the ECU happy and ensure quiet operation at low boost while maintaining the performance and sound of a vent-to-atmosphere blow-off valve

Nissan RB25 & RB30 Harmonic Crankshaft Balancer Bolt interior/exterior *Brace comes with bolt kitPart number: ARP NIS RB25 RB30 HAR BAL BOLT Replaces the factory hardware on Nissan RB25 and RB30 engines M16 x 1. 5. ARP 2000 hardware provides a more secure torque with far more durability than factory hardware. Compatible with both aftermarket and factory balancers.