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#P6731
Stage6 Streetrace 50cc cast-iron cylinder kit for Piaggio air-cooled 50cc scooters.
The aluminium cylinder head has been adapted from the Stage6 70cc A/C MKII and Stage6 have gone for a piston manufactured by the renowned Italian company Vertex Pistons.
The performance characteristics of the Streetrace are well above standard; around 7hp, 3-4hp above standard while the cast-iron cylinder keeps these kits robust. To achieve the kits full potential a larger carb and a mid range exhaust is recommended. Main jet, rollers and clutch springs will need to be adjusted.
NGK BR9ES spark plug is reccomended.
Included:
cylinder, piston kit, cylinder head & gasket set.
Stage6 S6-7114010
This is a 50cc cylinder kit so the engine will still be 50cc once it's fitted.
To upgrade it to 70cc you would need to use one of the kits from the 70cc category's on the website. They do not make an air cooled 70cc Streetrace kit, but these will be good alternatives:
https://www.pedparts.co.uk/product/140/polini-sport-70cc-cylinder-kit-piaggio-air-cooled
https://www.pedparts.co.uk/product/336/piaggio-malossi-cast-iron-70cc-kit-air-cooled
