Heavy clutch pedal on your RB26 GTR? Gone inconsistent, or lost assist entirely? The assist booster is usually the cause.
It sits behind the clutch master cylinder on RB26DETT GTR and Stagea 260RS models, and it commonly fails when the master cylinder weeps fluid into the diaphragm. Once it goes, the pedal turns heavy, vague, or drops assist altogether.
This is a direct OEM-spec replacement for Nissan part number 30630-05U01. It restores proper pedal assist and bolts into the factory location.
Suits: R32 GTR, R33 GTR, R34 GTR, Stagea 260RS (RB26DETT)
Fitment note: This booster does not come pre-adjusted. You’ll need to set the push rod length on install. If you’re using an HFM.PARTS external push rod adjusting tool, run it in the opposite direction to what’s printed on the tool.
- Direct OEM-spec replacement for Nissan 30630-05U01
