AJS - 745cc OHV (Model 33)
Norton - 745cc OHV (Atlas)
compression ratio 7.5:1, Year: 1965-67 (bore 2.874/73mm +1.6mm) compression height 39.19mm, piston length 62.2mm (concave head with valve pockets) Pin diameter .6869". A 2 cylinder set comprises 1 x left hand & 1 x right hand piston. For 1 complete set order 2 of these pistons. 12 - pistons available (6 pairs) (PHC).