SRD/MP54
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Spoox Racing Developments Rotrex C30/94 Restricter Ring (7-8psi)
Designed specifically for mounting the Rotrex C30/94 supercharger fitted to the XU10J4RS engine.
This alloy restrictor ring is hard anodised in red to prevent corrosion and restricts the right amount of air to hold boost at 7-8psi (max) when RPM is limited to 7300.
Our kits are tried and tested and have produced very high power figures time and time again.