Engineered by Tomberlin for the atv motorcycle segment, the 2011 Tomberlin SDX-400 IRS ATV relies on a 352 cc (21.5 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, maximum torque reaches 27 Nm (19.9 lb-ft) at 5,500 rpm, transferring power to the rear wheel through belt final drive. Internal engine geometry specifies a bore and stroke of 80.0 x 70.0 mm (3.1 x 2.8 inches) with a 9.8:1 compression ratio.
On the scales, the SDX-400 IRS ATV measures 319.8 kg (705 lbs) dry. Rider ergonomics and chassis geometry center around a 1,280 mm (50.4 in) wheelbase engineered for quick, flickable steering geometry.
Engine
Displacement352.0 ccm (21.48 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Torque27.0 Nm (2.8 kgf-m or 19.9 ft.lbs) @ 5500 RPM
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
