it doesn't fit JR10 wheels which originally have higher conical cap

Gen-V Diaphragm Replacement Tool

If you need a 40mm external wastegate and don’t have motorsport in mind

including being utterly open at cold start for increased emissions compliance

No adapters

BOV Kompact EM Plumb Back VR4 JRX10 it doesn't fit JR10 wheelsA direct fit high performance replacement for the factory plastic unit, the Turbosmart Kompact BOV suits the new generation Honda VTEC Turbo K series engines found in the the Civic RS (1. 5L) and also the Civic Type R. It is capable of handling high levels of boost and is made of billet aerospace grade aluminium with high temperature seals.