Nitto Oil Restrictor Blockoff

Nitto RB Oil Gallery Restrictors / Block Offs

One of the most significant ways in which you can manage your oil flow and pressure in your RB motor is by using a an oil gallery restrictor. Nitto Oil restrictors are precision manufactured in order to deliver simple and easy fitment and an accurate method of controlling your lubrication system. This modification is extraordinarily cheap and effective.

RB Oil Gallery Restrictor & Block off Guide 

Nitto Oil Gallery Restrictors are utilsed to manage oil flow and pressure and prevent the over pooling of oil common with builds using upgraded pumps and high rpm. 

RB26 with Nitto or Tomei Pump - 1.1mm Front Feed Restrictor, Rear Feed Block off 
RB26 with N1 Pump with Upgrade Internals - 1.3mm Front Feed Restrictor, Rear Feed Block Off

RB20/RB25 with Nitto or Tomei Pump -  1.3mm Front Feed Restrictor, Rear Feed Block off 
RB20/RB25 with N1 Pump with Upgrade Internals - 1.3mm Front Feed Restrictor, Rear Feed Block Off 

RB25 Neo with Nitto or Tomei Pump -  Open VVT Feed, 1.3mm Front Feed Restrictor, Rear Feed Block off 
RB25 Neo with N1 Pump with Upgrade Internals - Open VVT Feed,1.3mm Front Feed Restrictor, Rear Feed Block Off 

Nitto Oil Gallery Block Offs are utilised in RB26 head/RB25 block combinations due to the RB26 / Neo Solid head design which require the RB25 VCT oil gallery to be blocked off. 

*Reccomendations only