JHH Racing Billet SR20 Girdle
JHH Racing SR20 girdle designed and released a decade ago. JHH Racing girdle improves engine block rigidity by tying the 5 main caps together but also incorporating this to the engine sump rails. This design helps eliminate crank walk and twisting caused from high output engines.
Our JHH Racing SR20 girdle built in conjunction with our sleeved and prepped engine blocks have seen over 1000hp from production Nissan blocks. Manufactured from aircraft aluminium 7075 and features ARP hardened press fit insert washers for accurate and even torque distribution and improved main tunnel clamping.