2018 Husqvarna Vitpilen 401 Dyno

We check out Husqvarna’s single-cylinder streetbike’s performance numbers

The 2018 Husqvarna Vitpilen 401 has a starting suggested retail price of $5,600 and is available in just one color—whitish silver. Powering this Swedish machine is a liquid-cooled, single-cylinder, four-stroke 373.2cc engine similar to the one found in the 390 Duke and RC390 of Husqvarna’s parent company, KTM.

We ran the Vitpilen 401 on our rear-wheel dyno in fourth gear to determine peak output from the single-cylinder engine. We documented 41.4 hp at 8,740 rpm and 26.4 pound-feet of torque at 6,880 rpm.

2018 Husqvarna Vitpilen 401 Dyno ChartRobert Martin

Compared to the last KTM RC390 we tested, the Vitpilen 401 produced 3 fewer hp and 2 additional pound-feet of torque. Husqvarna says this bike has been tuned for urban performance, which means more power lower in the rev range. To achieve that, changes were applied to the intake and exhaust, as well as fuel mapping.

Still everything you’ve ever wanted from a small-displacement bike


"KTM actually managed to add two more pound-feet of torque through refined ECU tuning, a larger airbox, and an updated (and better looking) exhaust. Midrange power feels strong, and with a dry weight that's just shy of 330 pounds, the bike's power-to-weight ratio is about as good as it gets in the small-displacement category."—Corey Alexander

Engine Specifications

DESIGN: Liquid-cooled, single-cylinder four-stroke; 4 valves, DOHC, wet-sump lubrication
BORE X STROKE: 89mm x 60mm
FUEL DELIVERY: Electronic fuel injection
EMISSIONS CONTROL: Closed-loop three-way catalytic converter, emission standard EU-4