The Polaris 440 IQR is a relatively lightweight snowmobile that is designed for quickness and agility. Polaris no longer makes the 440 IQR but continues to produce larger 500, 550, 600 and 750 models in its IQ line of snowmobiles. The "R" in the 440 IQR designation stands for "Racer," reflecting the machine's low center of gravity and racer-friendly handling.
The Polaris 440 IQR has a Liberty engine with a displacement of 438 cc, a bore of 2.6 inches and a stroke of 2.5 inches. The piston to cylinder clearance is .005 inches while the piston ring end gap is .013 inches. The engine idles at 1,200 rpm and operates at approximately 8,500 rpm. The belt is 1.4 inches wide and its single angle is 26 degrees. The drive clutch bolt torque is 50 ft-lb. The IQR 440 has an IQ Race suspension with a spring rate of 150 lbs-inch and front vertical travel distance of 10 inches. In the rear, an IQ Race suspension has a nitrogen pressure of 170 psi. The engine has two TMX 34 carburetors.
Dimensions and Features
The overall length of the Polaris 440 IQR is 110 inches, its width is 48 inches and height is 45 inches. The approximate dry weight of this snowmobile is 450 pounds. The length of the Soucy-built track is 121 inches, the ski center distance is 42.5 inches and ski width is 5.5 inches. The Polaris 440 IQR holds four gallons of recommended 110-octane fuel and four quarts of liquid coolant. It has Phantom dual piston caliper brakes.
Design and Appearance
The IQR 440 has an aluminum and chromoly bulkhead. The tunnel and rear bumper are both aluminum while the front bumper is chromoly and steel. The Polaris IQR 440 has dual 60/55W halogen headlights and multi-range hand/thumb warmers. The skis are a saddle-less composite design and the ignition is digital. The IQR 440 uses a Polaris VES, single exhaust pipe. The IQR 440 has a tachometer as well as a parking brake. Reverse is an optional accessory. The hood color is Race Red, the nose pan is black, the tunnel is unpainted and the accent and decal colors are silver metallic, black and white.
- Photo Credit altrendo images/Stockbyte/Getty Images
Specifications for a 440 Engine
Produced from 1966 to 1978, the Mopar 440 engine is legendary among muscle car aficionados. In its highest performing version, the 440...
Polaris Indy 500 Engine Specs
The Polaris Indy 500 is a popular choice of snowmobile because of its impressive performance and desirable ride comfort. Although the Indy...
1998 Polaris Sportman 500 Specifications
The 1998 Sportsman 500 was a mid-sized, all-terrain vehicle produced by Polaris. The somewhat sleek design made this four-wheeler similar to a...
Yamaha SS 440 Snowmobile Engine Specs
In 1955 Yamaha's first motorized product, a single cylinder street bike, was made and sold in the Japanese market. Today Yamaha is...