This item does not qualify for free shipping, shipping calculated at Checkout
3 Hour X100AC engine kit.
It is in our DNA –
Why is this engine so appealing? For one it features a balance shaft that reduces vibration, improves driveability and ultimate durability. Other features include 40x25x7 Main Bearing (with a roller bearing upgrade available) and 20mm Crankpin. Our creativity has led to the one-piece exhaust system, a simplified wiring harness and removal of unnecessary parts from the package. What truly makes this engine unique is the option to convert from 100cc air-cooled into a 125cc air-cooled or even water-cooled as all three engines will utilize the same bottom end.