![]() ![]() We can only guess that surveys have shown that MXZ riders now like quiet under the hoods of their four-stroke powered sport sleds.Īll that notwithstanding, the ACE 900 remains unique for 2014. When we asked if this was the case with the ACE 900 in the sportier MXZ chassis, we were essentially blown off, even as we explained our reason for the question. When the 1200 4-TEC came out as the power for both a Grand Touring and an MXZ model, we were told that the exhaust notes were different, deliberately more “macho” for the MXZ and toned down for the Grand Touring. Frankly, we envision MXZ buyers looking for a bit of a “Hemi rumble” attitude. We just don’t see the MXZ buyer as caring if the engine is quiet. We don’t see the ACE 900 as being a viable power source for the MXZ TNT series, although it will available in that guise. Key to the SilentDrive system is the positioning and design of the 16 smaller internal lugs in the track’s center area. The triple works well in the Grand Touring with the quiet drive track system and turns the trail/utility Expedition Sport into a nice-to-have sled. This engine is well suited to what Ski-Doo has fashioned for 2014 in that model. We especially liked the ACE 900-powered Ski-Doo GSX LE. ![]() That describes the GSX, Grand Touring or, even, the Expedition buyer. The ACE 900’s “skill set” makes it immensely suitable for customers who want a high-tech design that’s quiet, powerful at drive offs and has good pull up to the outer edges of midrange performance. Obviously this motor has other assets to make it suitable as a premier snowmobile power source. But then it just kind of drops off the grid as it gathers speed. In our private on-trail evaluations we found the 900 motor to be pleasant with strong low-end torque and midrange. The ACE 900 makes its horsepower at 7250 revs. Right away we don’t see it as a threat to Ski-Doo’s 600 E-TEC with its 120-plus hp. Look at the facts, the ACE 900 makes 90-hp. While interesting, we don’t see it as a real “game-changer.” Based on the ACE 600 four-stroke twin, the ACE 900 essentially adds a cylinder and 30-hp to the existing 600 four-stroke. Perhaps, though, it’s a good thing that the introduction of this new motor gets downplayed a bit. ![]() This 90-hp four-stroke is based on the twin cylinder ACE 600, but offers more power and exclusive-to-Ski-Doo drive-by-wire technology. ![]()
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