The increase in displacement is achieved by a different piston diameter (from 57 mm to 60 mm), the org. cylinder sleeve needs to be drilled out.
The kit for the conversion to 140 cc contains these items: - piston and piston rings - piston pin and clips - cylinder head gasket
Suitable for: - all TW125 - all SR125 - XT125 (not XT125X/R from 2005)
Important information: Additional parts are required for a correctly and safely funktion of the engine. You can find a list of other recommended parts in the "Engine Conversions" category.