This is the only big bore kit we've found that works with the Eton Sport 50, SYM 50cc and Tomos Nitro 50 without grinding down the cases. 70cc displacement. Most Big Bore kits will not install on this engine. You will have to grind down the cases.
Includes Cylinder, Piston, Rings, Wristpin and circlips.
Does not include gaskets.
Eton Sport 50
Tomos Nitro 50
SYM Symply 50
SYM 50cc Scooters
Lance 50cc Scooters made by SYM
Lance PCH 50
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