Marketing is a strange beast and the birth of the 570cc ATV proves it. About a year ago, Polaris introduced a 570cc engine to its ATV range. It wasn’t a Polaris engine but one made by a German company, Weber Motor.
Weber claims that its four-stroke engines have a power-to-weight ratio similar to that of a two-stroke engine, “but without the typical disadvantages of high fuel consumption, noise, emissions and short service life”. That’s quite a claim.
There was a time when, cc for cc, no four-stroke could match it with any two-stroke in a horsepower shootout.
Anyhow, Polaris called on Weber to develop the 570cc engine for its Sportsman ATV range, and in doing so killed off the 500cc engine that had worked so hard for so long. 500cc,…