Beta 300 CrossTrainer: history, specs, pictures

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Production 2017
Class Enduro
Single cylinder, 2-stroke, liquid cooled
Bore / Stroke 71.1mm x 71.1mm
Compression ratio 11.3:1
Fuel System Carburetor Keihin PWK 36mm
Spark Plug NGK GR7CI8 ‘15-18[1]
Transmission Gear box: 6-Speed

Final Drive: Chain

Clutch: Wet Multi-disc
Suspension Front: 43 mm Inverted with rebound, & spring preload adjustment
Rear: Steel body shock with adjustable rebound and compression
Brakes Front: 260mm floating rotor
Rear: 240mm rotor
Front Tire 90/90-21 ‘15-18[1]
Rear Tire 140/80-18 ‘15-18[1]
Wheelbase 57.8 inches (1468 mm)
Seat Height 35.79 inches (909 mm)
Weight 105.0 kg (wet)
Manuals Service Manual

The Beta XTRAINER 300 was a Single cylinder, 2-stroke, liquid cooled Enduro motorcycle produced by Beta in 2017.


A 71.1mm bore x 71.1mm stroke result in a displacement of just 293.1 cubic centimeters.


The bike has a 6-Speed transmission. Power was moderated via the Wet Multi-disc.


Stopping was achieved via 260mm floating rotor in the front and a 240mm rotor in the rear. The front suspension was a 43 mm Inverted with rebound, & spring preload adjustment while the rear was equipped with a Steel body shock with adjustable rebound and compression. The wheelbase was 57.8 inches (1468 mm) long.

2017 Beta XTRAINER 300[edit]

The amazing 300 Xtrainer returns as well for 2017 with an updated graphics package. The motor is based on Beta’s 300 RR, but has been detuned. It has milder cylinder porting and there are spacers in the air intake tract and the power valve air chamber to mellow everything out. Another difference that’s easy to spot is the bike’s expansion chamber, which is overall smaller and has a more squared-off shape, which gives the motor more bottom end and less of a hit.


  1. 1.0 1.1 1.2 2019 Western Power Sports Catalog. Western Power Sports. 2019.