Increased strength head studs (CPR Performance). Designed for extreme racing engines.
Pack of 4pcs – full set
If you’re having head gasket issues due to increased compression on your GX390 or clone or Predator 420cc, this is what you need.
FITS: GX390 and Predator 440
Lubricate all studs before fitment using engine oil or WD40. Install nuts & washers, torque to 20ft lbs.
