Ski-Doo unveiled big improvements for its 2012 MX Zx RS racing sled. The rear suspension, introduced last year as “PCX,” was a name only intended to disguise the rMotion name until the consumer version was introduced. For 2012, the rear suspension is named rMotion Racing. Both skid frames share the same basic geometry with a rising-rate rear shock and long front arm. Each are optimized for their intended uses. The rMotion Racing has a new reinforced rear arm, improved coupling system and new reinforced powder coated rails for reduced ice build up.
On the front suspension new, taller spindles improves ski pressure and cornering while the new powder coating will reduce snow and ice build up.
An improved steering post and bushing reduce bump steer to non-existent and the new upper A-arm which creates a new steeper caster angle. Racers will notice much straighter tracking through the bumps and better chassis balance front to rear.
Other notable features:
600 RS Engine: six more horsepower
Front Suspension:
Rear Suspension – rMotion Racing :
Drive Line:
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