Maranello Engineering parts for two stroke engines standard and racing

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(June 2024 update)

New: our covers are now available with either:
  • groove for radial ORing (our standard);
  • lip for axial ORing (same as in the original RG engine);
  • double seal, radial _AND_ axial ORings for maximum safety.

These are three different machining routines with different costs but as a promotional offer, the price has been set the same for all variants: you choose the one you like, you pay the same.
Each of the three solutions has its pros and cons, which should be obvious for those already experienced (there is no perfect solution); as soon as possible, we will publish a technical deep dive and make the new product orderable online. Till then, for orders or information, you can write us.


Example of a cover for standard carb, before treatment, full optional: radial ORing groove AND axial ORing lip AND swirl oil grooves.
This is already sold but more are coming, you can pre-order.


(April 2024 update)


(March 2024 update)

New 2024 Production: Stock RG500 Inner Valve Seats

Immediately availabile, even more beautiful, photos don't do justice.
Interchangeable replacement for stock RG inner valve seats part number 1246120A04 (RH) and 1246220A04 (LH) . This is NOT our 116 mm version, it does NOT require our outer covers to be installed and it DOES have the outer groove for the ORing in same size as the original part. It is an easy swap (bolt on, interchangeable) replacement for the original part and CAN be used in conjunction with the original valve covers.
It is immediately available for purchase here: RH seat and LH seat .


Wide availability of the base version ("white flat", i.e. without oil grooves or treatment) that precisely reproduces all the features of the original, but is better for tolerances, parallelism, and overall quality.
We also have versions with oil grooves and/or treatment, in all combinations, and still fully interchangeable with the original.
Please follow the links above to access the product pages where you can view the available options and (at page bottom) plenty of pictures that display the quality and the level of detail in the reproduction of the original features.




(September 2022 update)

New Product: RG500 Carb Bowl Gasket

We have put in production a carburetor bowl gaskets for the RG400 and RG500 that's as similar as possible to the original spare part code 1325120A00 in both design, material and thickess (interchangeable replacement).
The gasket is immediately available and can be purchased at a convenient price as an option of the engine gaskets kit.
You can also purchase it separately from the complete gaskets kit.





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