2026Beta 390 RS 4-Stroke

13 fields on record

The 2026 Beta 390 RS is a lightweight, versatile single-cylinder 4-stroke designed for trail riders and enduro enthusiasts seeking easy handling and reliable performance. Its 386cc liquid-cooled engine delivers accessible power while the adjustable KYB suspension and semi-double cradle frame excel in technical terrain and varied riding conditions.

Capacity: 386.0 ccm
Engine: Single, four-stroke
Gearbox: Not on record
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Dry weight: Not on record
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Seat height: 950 mm
Power: Not on record
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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail96%

Cornering80%

City riding25%

Daily riding20%

Touring25%

Two-up5%

Track70%

Best for: Built for enduro racing and technical trail riding, with a high-compression liquid-cooled four-stroke engine and fully adjustable KYB suspension tuned for demanding off-road terrain.
Built for: Sharp, responsive, and purpose-built, this bike rewards an aggressive, active riding style rather than relaxed cruising.
Not ideal for: This is not the right choice for riders wanting a comfortable daily commuter, a passenger-friendly bike, or a long-distance road touring machine.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 950mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2026 Beta 390 RS 4-Stroke, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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