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IRS and V-twin power make this unit a sure winner.

Kawasaki’s introduction of the new Brute Force™ 650 4x4i ATV has been smoothed by the tremendous success achieved by its slightly larger brethren, the Brute Force 750 4x4i. This economical new addition to the Kawasaki family of V-twin powered sport-utility all-terrain vehicles couples the luxurious ride inherent with front and rear independent suspension and the qualities of this durable and powerful 633cc engine.

Offering virtually the same power characteristics as the 750 4x4i, this new ATV entry will shine under the most grueling circumstances in both low-to-mid range rpm and high rpm ranges. The 90-degree, liquid-cooled four-stroke powerplant will be there to answer any needs posed by its target audience of adventure enthusiasts and sportsmen.

The engine features a bore and stroke of 80mm x 63mm, linerless aluminum cylinders based on its big brother’s, and an all-new lightweight crankshaft.

Helping to lighten the load, engineers have used aluminum to replace steel in the construction of the front exhaust pipe cover, new two-piece center exhaust pipe cover, and the muffler cover. Transmission gears in the Brute Force 650 4x4i feature holes to lighten the overall weight and several other minor changes have been introduced to optimize the power-to-weight ratio.

Its new chassis has a revised caster angle for the front A-arms—upper and lower—resulting in light and responsive steering as well as excellent ground-following abilities. Shock absorber spring rates and initial preload settings for both front and rear have been revised to improve ride comfort. Riding comfort was also considered when this unit was slated for a seat using a softer urethane foam cushion.

The Brute Force 650 4x4i transfers power from its V-twin engine to the wheels through a dual range continuously variable transmission (CVT) featuring high, low, and reverse. The rider can select two- or four-wheel drive by simply pressing a handlebar-mounted button.

Stopping the 650 4x4i are dual 200mm front discs and an enclosed wet multi-plate rear brake system. Its towing capacity is a hefty 1,250 pounds, and it will carry a combined 264 pounds on its front and rear racks.

It may be the slightly smaller one in Kawasaki’s stable of IRS-equipped ATVs, but it doesn’t sacrifice anything in the “looks” department. Designers gave the Brute Force 650 4x4i a rugged, take-on-anything type of appearance with a new front guard design that will both attract onlookers and satisfy owners. It will come cloaked in either Woodsman Green, Aztec Red, or Realtree Hardwoods Green® HD™ camouflage.

Authentic Kawasaki Accessories for the 2006 Brute Force 650 4x4i are available through Kawasaki dealers or the can be purchased on the Internet at

As with all off-highway vehicle recreation, Kawasaki encourages ATV riders to ride responsibly and to respect the environment. Kawasaki will pay first-time buyers of a new Kawasaki ATV $100 for completing an ATV rider safety course conducted by the ATV Safety Institute (ASI). Interested consumers can call ASI, toll-free, at 800-887-2887.


  • Engine: Liquid-cooled, 90-degree, four-stroke V-twin

  • Valve system: SOHC, four valves per cylinder

  • Displacement: 633 cm³

  • Starting system: Electric & Recoil

  • Bore x stroke: 80 x 63mm

  • Compression ratio: 9.9:1

  • Lubrication: Forced lubrication, wet stump

  • Ignition: Digital DC-CDI

  • Transmission: Dual range CVT with reverse

  • Final drive: 2WD / 4WD, shaft

  • Frame: Double-cradle, high-tensile tubular steel

  • Suspension:
         Front/wheel travel: Double wishbone, 6.7 in.
         Rear/wheel travel: Double wishbone, 7.9 in.

  • Tires
         Front AT25 x 8-12
         Rear AT25 x 10-12

  • Brakes
         Front Dual 7.9 in discs with 2-piston calipers
         Rear Enclosed wet multi-plate

  • Overall length: 86.4 in.

  • Overall width: 46.3 in.

  • Overall height: 48.4 in.

  • Wheelbase: 50.4 in.

  • Ground clearance: 10.1 in.

  • Seat height: 35.7 in.

  • Rack capacity, front/rear: 88/176 lbs.

  • Towing capacity: 1,250 lbs.

  • Dry weight: 606 lbs.

  • Fuel capacity: 5.4 gal.

  • Instruments: Speedometer, odometer, dual trip meters, clock, hour meter, fuel gauge, 2x4/4x4 indicator, neutral indicator, reverse indicator, low fuel warning light, low oil warning light

  • Colors: Woodsman Green, Aztec Red, Realtree Hardwoods Green® HD™

  • Wholesale distributor:
    Kawasaki Motors Corp., U.S.A.
    9950 Jeronimo Road
    Irvine, CA 92618
    (949) 770-0400

*Specifications are subject to change. Please visit for most current specifications.

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