2007 Polaris IQ 440 Racer:

FOCUS ON DURABILITY

The process of improving the race sled for 2007 has been led by a team of Polaris chassis and powertrain engineers at the company’s Roseau, Minnesota, engineering facility. They worked with Polaris racers and race team management to identify areas where the sled could be improved, then made changes that have proven highly successful in rigorous pre-season testing.

Steps that the development team took to improve the sled’s durability include:

• Improving overall chassis durability by reinforcing the front clip and rear close off.

• Use of a new, stronger, more durable belt.

• Installation of a new, lower chaincase bearing and slip gear to minimize stress on the chaincase.

• Development of a new seat hold-down for improved durability

They also made slight but significant adjustments to the IFS geometry and shock setup to improve the ride and handling.

“They widened the control arms and lowered the spindle to make it turn even better,” said Rager.

The sled also uses lighter, more durable torsion springs for 2007.

Like last season’s race sled, the 2007 440 IQ™ race sled will be equipped with aluminum Walker Evans shocks, front and rear. The IFS shocks have 16-position compression adjustability and the rear track shock has 12-position adjustability, allowing Polaris racers to tune their suspensions to suit their riding styles and the various types of tracks on which they’ll race.

These shocks help the 440 IQ achieve 11.5” of front suspension travel and 13.9” of rear travel.

IMPRESSIVE LIBERTY POWER

The 2007 IQ 440 race sled will be powered by the liquid-cooled Polaris Liberty™ 440 twin that has provided Polaris racers with excellent holeshot acceleration and corner-to-corner speed in recent seasons.

The engine has been continually improved through modest tuning changes, but was already a proven winner, so it hasn’t been changed dramatically for 2007. The engine has NiCaSil-lined cylinders, uses dual TMX 34 carburetors and has the Polaris VES – Variable Exhaust System – to provide racers with a broad powerband.

The race sled engine also has oversized intakes, high-flow V-Force reeds, a high-performance stator and the patented Polaris Dragon ignition, a unique ignition system first developed by Polaris and now imitated by the competition.