Superior RB Cast Bellhousing

Coming Soon: HPR Superior Nissan RB Cast Bellhousing Kit – 8HP70/75 Size
A new, more accessible version of HPR’s game-changing Superior bellhousing system is coming soon for Nissan RB engines.
 
Designed for 8HP70 and 8HP75-size transmissions, the new cast bellhousing replaces the original transmission bellhousing rather than relying on a conventional adapter plate. This creates a shorter, cleaner drivetrain package with improved transmission-tunnel clearance and no need to cut the factory bellhousing for starter clearance.
 
The kit retains the key advantages of HPR’s proven billet Superior system, including a billet 4340 steel flexplate with an integrated starter ring gear and the required conversion hardware.
 
Key Features
Direct Nissan RB to ZF 8HP conversion
Compatible with RB20, RB25, RB26, and RB30 engines
Compact cast bellhousing design
Up to 40 mm shorter than traditional adapter systems
Improved transmission-tunnel clearance
No starter-clearance cutting of the original bellhousing
Billet 4340 steel flexplate
Designed for compatible 8HP70 and 8HP75 transmissions
Complete conversion hardware included
 
Expected availability: Early August 2026.