In an effort to offer its customers more choices, excellent value and to better control their destiny as an ATV manufacturer, Arctic Cat has...

In an effort to offer its customers more choices, excellent value and to better control their destiny as an ATV manufacturer, Arctic Cat has designed and will assemble its own ATV engine. It’s called the 650 H1, and it will debut on a new Arctic Cat 650 H1 4×4 Automatic.

The liquid-cooled, single-cylinder 641cc four-stroke features the Duramatic automatic transmission (with Hi-Lo range), electronic push-button 2WD/4WD and engine braking. It’s fed by a 40mm Keihin carburetor with electric choke. With liquid cooling and a thermostatically controlled auxiliary fan, the H1 engine delivers consistent operation in all conditions. The name “H1” comes from its hemispherical-shaped cylinder head and single-cylinder design.

The new engine was designed by a highly specialized team of professionals that make-up the all-new ATV Engine Division within Arctic Cat. To staff the team needed, Arctic Cat called on the best-in-the-business including a staff of engineers acquired from outside companies, well known German engine design firms and existing Arctic Cat employees with unmatched experience within the disciplines of clutching, quality control and field testing.

The 650 H1 engine will be assembled near the corporate headquarters in Thief River Falls at a new, state-of-the-art 24,000 square foot facility housed in the former location of Arctic’s in-house clothing production facility. The Engine Division was conceived in the summer of 2000. Three years in the making, the engine is scheduled for a debut later this year.

The H1 was designed and built using the latest manufacturing technology to ensure exact, quality standards. Likewise, each new engine will be thoroughly tested before being placed in an ATV. Tests include the ultra-modern Cold Spin Test utilized by manufacturers such as the “Big 3” automakers which checks a multitude of required specifications including compression, valve and ignition timing, and a leak test, all while the engine is “cold” and not running. A separate “hot test” on the dyno will check operating conditions, torque, horsepower and more to ensure exact tolerances. The combination of both testing methods make Arctic Cat unique in regards to requiring such rigorous quality standards.

Thanks to its single-cylinder design, the new 650 H1 has a broad powerband with an emphasis on low- and mid-range torque providing optimal power for pulling under heavy load or exciting acceleration on trail rides.

“The H1 650 is the first step in our new engine program, and will provide an excellent combination of power, durability and value to our entire ATV line,” said Chris Twomey, Arctic Cat’s President and CEO. “Moving forward, our intent is to build and continue to source the best engines that meet the requirements of our customers.”

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