March 6th Important Update: CMB notified us that these are on hold until the end of March due to a supplier delay. We have some on order. We advise please place your order and we'll make sure you're included for an early April delivery!

This is CMBs latest petrol engine which was released in 2022.  Its very powerful and fast and is very popular in competitions. This is the "ringed" version, meaning it has a piston ring and is less sensitive during run in protocols (unlike the AAC) but has a slightly lower max RPM as a result.