This configuration is certain to 4-stroke engines Because the crankshaft isn’t used while in the ingestion tract. On the other hand, whether or not that is a modest price to pay for in exchange for firing after every other revolution is remaining to personal discretion. Freehub: a ratcheting assembly onto https://bikeengineskits93701.ltfblog.com/33995670/not-known-details-about-engine-bike-kits-ireland