How Much Power Does the 2025 Beta 125 RR X-Pro Make?

Dyno testing Beta’s 125cc two-stroke enduro for horsepower and torque.

Beta’s full-size dirt bike lineup is chock-full of engine size options with everything from 125cc two-stroke to 478cc four-stroke, both in RR X-Pro and RR Race trims no less. On the smaller end of the displacement spectrum and one of the lowest in price of all the Italian manufacturer’s full-size enduro and off-road motorcycles is the 125 RR X-Pro.

In its debut on the Dirt Rider dyno, the 125 RR X-Pro made peak figures of 31.4 hp and 15.2 lb.-ft. of torque at the rear wheel. For comparison, that’s 1.8 hp and 0.9 hp less than the 2024 KTM 125 SX, which is impressive considering this particular orange machine is designed for motocross riding and racing, where more emphasis is placed on high rpm power rather than low-end torque, especially on a small-bore two-stroke.

2025 Beta 125 RR X-Pro Dyno ChartRobert Martin

2025 Beta 125 RR X-Pro Engine Specs

Engine Type: Liquid-cooled, 2-stroke single-cylinder
Displacement: 125cc
Bore x Stroke: 54.0 x 54.5mm
Compression Ratio: 15.2:1
Fuel Delivery: Keihin PWK 36mm carburetor