Hello, you are looking at a brand new sealed in the box Gimar OS Mars EVO .21 3 port offroad long stroke engine. This engine is fully OS based with all parts made by OS and Gimar. This engine is based on the B2104 engine by OS and is fully modified by Gimar and Italy. You will not find anyone anywhere (even if they say they d) selling a modified Mars engine. I am the only retailer with modified Mars engines.


This engine features:

Hand Modified DLC Crankshaft with bi-turbo design

3 port piston and sleeve 

Ceramic rear bearing

Hand modified crankcase

Blue cooling head

Steel insert backplate

If you have any questions, please just ask! These will not last at this price!

Thanks for looking and good luck!