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Rotax 122 Mitaka 140cc big bore kit (fits RS RX SX MX Tuono 125)


Product information

New Mitaka 140cc big bore kit to fit the Rotax 122 engine as fitted to loads of Aprilia 125s.

Kit includes-

Rikon rings (Japanese)
3 x base gaskets (different thicknesses to help set squish and compression ratio)
head o-ring
water jacket o-ring
RAVE gasket and seal
gudgeon pin and circlips

The standard RS125 cylinder head (or aftermarket equivalent) is used.

Small end bearing not included.

We'd recommend fitting this kit to a fresh or low mileage bottom end as the increase in power and torque could cause premature failure of a worn crank and/or main bearings.

We also offer the option of a clean up/blueprint of the barrel before it is sent to remove any casting marks that may impede mixture flow.

Please note: there is an additional postage cost for these items due to the size and weight of the packaging - EU postage is £28.99 and the rest of the World is £49.99. UK postage is not affected.

Technical specifications

Condition: New


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