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RACING - Vertical "GOLD LINE"
RACING SCOOTER PISTON-CYLINDER
FOR MINARELLI/YAMAHA SCOOTER ENGINES
VERTICAL TYPE WITH AIR COOLING SYSTEMS
Dear Customer,
Thank you for choosing one of the various items that
"TOP PERFORMANCES" has designed and manufactured for
competitive purposes only.
The cylinder is made in "MlNACROM" cast iron (with chrome added
to the alloy), unique in its class with 7 scavenge ports, 6 are opposed
and 1 is placed on the rear to optimise the filling.
The single ring piston is cast in light alloy with particular attention
to profile and oval shape. It undergoes a heat treatment and has an
antiscuff facing in the surface.
BORE
DISPLACEMENT = 67,9 cc. Compr. ratio = 1:13,7
ASSY Ø 47
Part no. 9930000
SPECIFICATIONS
= 47 mm
7
STROKE
= 39,2 mm