Matchless G50 90 Bore Piston
Forged , High Compression , Lightweight piston for " Standard " 90mm bore G50 engines made specially for us by Omega Piston`s.
This piston is designed with the benefit of the original " Big Valve " 1962 AMC drawing and has valve pockets of sufficient depth to accomodate our AM4 performance cam.
Note that we do not apply coatings to our pistons as we have found them to be of little use.
Our piston is sized to be used with a 90.000 Nikasil bore or a 90.100 Iron Bore.
Standard rings are Nitrided and supplied with a case hardened EN39 gudgeon pin.
We strongly recommend the use of a DLC (Diamond Like Carbon) Gudgeon Pin which drastically extends the life of the pin, piston & little end bush.
Our standard Nitrided rings are a top quality all round solution, but for Nikasil bores, Titanium Nitride (TiN) Coated oil rings are advantageous.