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Enduro - Offroad · 2025

RR X-Pro 4T 390

US$ 10399. MSRP depends on country, taxes, accessories, etc.
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2025 Beta RR X-Pro 4T 390 Technical Analysis & Specification Breakdown

At the heart of the 2025 Beta RR X-Pro 4T 390 enduro - offroad motorcycle, Beta utilizes a 385.6 cc (23.5 cu in) liquid-cooled single cylinder, four-stroke layout. Internal engine geometry specifies a bore and stroke of 88.0 x 63.4 mm (3.5 x 2.5 inches) with a 12.5:1 compression ratio.

On the scales, the RR X-Pro 4T 390 measures 107.5 kg (237 lbs) dry. Rider ergonomics and chassis geometry center around a 940 mm (37 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,490 mm (58.7 in) wheelbase engineered for balanced agility and highway composure. The 9-liter (2.4 US gal) fuel tank paired with a rated consumption of 3.3 L/100 km provides an estimated theoretical range of roughly 273 km (170 miles) between fill-ups.

Theoretical Range
~273 km (170 mi)
Engine
Displacement 385.6 ccm (23.53 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Titanium valves
Compression 12.5:1
Bore x Stroke 88.0 x 63.4 mm (3.5 x 2.5 inches)
Valves/Cylinder 4
Fuel System Injection. Synerject dual electronic injection
Fuel Control Double Overhead Cams/Twin Cam (DOHC)
Ignition Kokusan
Lubrication 2 oil pumps
Cooling Liquid
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Clutch Wet multi-disc
Performance
Fuel Consumption 3.30 litres/100 km (30.3 km/l or 71.28 mpg)
Greenhouse Gases 76.6 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame Type Molybdenum steel with double cradle split above the exhaust port
Front Suspension KYB hydraulic USD fork with 48mm shaft
Front Travel 295 mm (11.6 inches)
Rear Suspension KYB monoshock with progressive compound lever
Rear Travel 290 mm (11.4 inches)
Wheelbase 1490 mm (58.7 inches)
Ground Clearance 315 mm (12.4 inches)
Wheels & Brakes
Front Tyre 90/90-21
Rear Tyre 140/80-18
Front Brakes Single disc. 2-piston floating calipers
Front Brake Ø 260 mm (10.2 inches)
Rear Brakes Single disc. 1-piston floating caliper
Rear Brake Ø 240 mm (9.4 inches)
Dimensions & Weight
Dry Weight 107.5 kg (237.0 pounds)
Seat Height 940 mm (37.0 inches) If adjustable, lowest setting.
Overall Height 1270 mm (50.0 inches)
Overall Length 2180 mm (85.8 inches)
Overall Width 830 mm (32.7 inches)
Fuel Capacity 9.00 litres (2.38 US gallons)
Reserve Fuel 2.30 litres (0.61 US gallons)
Oil Capacity 1.60 litres (1.69 US quarts)
Other
Starter Electric
Color Options Red/blue/white
Notes

Traction control.

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Buying Checklist

Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🌲
Best For
Off-Road & Adventure
📏
Seat Height
94 cm / 37 in
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