2021 Husqvarna FX 450 Dyno Test

How much power does Husqvarna’s flagship cross-country bike make in 2021?

Video By: Alec Dare

Husqvarna’s flagship cross-country motorcycle, the FX 450 is currently campaigned in a multitude of off-road racing series across the United States. Rockstar Energy Husqvarna Factory Racing’s Trevor Bollinger pilots the bike on the East Coast in the Grand National Cross Country (GNCC) series and AMA National Enduro Championship, while his teammate Austin Walton selects it as his weapon of choice out West for the World Off-Road Championship Series (WORCS) as well as the AMA National Grand Prix Championship (NGPC).

We have tested Husqvarna’s highest-displacement off-road competition dirt bike in recent years and have always come away impressed with its versatility and rideability, especially considering it’s a 450. In fact, 2021 marks the third consecutive year we have dynoed and tested the FX 450. The latter is in progress as we are logging time on the bike both on the trail and the track, but we do have some hard numbers in regard to the bike’s power output thanks to our in-house dyno. With a Dunlop D404 street tire mounted on its rear wheel, the 2021 Husqvarna FX 450 produced peak numbers of 51.5 hp at 9,300 rpm and 32.9 pound-feet of torque at 7,300 rpm.

2021 Husqvarna FX 450 Dyno Chart
2021 Husqvarna FX 450 Dyno ChartRobert Martin

2021 Husqvarna FX 450 Engine Specifications

Engine Type: SOHC, liquid-cooled, four-stroke single-cylinder; 4 valves/cyl.
Bore x Stroke: 95.0 x 63.4mm
Displacement: 450cc
Compression Ratio: 12.75:1
Fuel Delivery: Electronic fuel injection
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