Overview

2027 Beta RR 390 X-Pro

Motorcycle

RR 390 X-Pro 4-Stroke

RIDE LIKE AN X-PRO
Starting at $11,590 MSRP
Manufacturer suggested retail price. Does not include dealer fees, tax, title, or registration.

Specs & Features

Engine
Engine Type
Beta Built single cylinder, 2-stroke, liquid cooled, with BPV power valve system and counter balancer, electric start with back-up kick starter sold as an option
BORE
88mm
STROKE
63.4mm
DISPLACEMENT
385.6cc
COMPRESSION RATIO
13.19:1
VALVE TRAIN
Titanium Intake & Exhaust
IGNITION
Dual-Map Kokusan 200w output On Demand Traction Control
SPARK PLUG
NGK LKAR8A-9
LUBRICATION
Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission
FUEL SYSTEM
42mm Throttle Body w/Dual Injectors
CLUTCH
Wet multi-disk
TRANSMISSION
6 Speed
FINAL DRIVE
O-ring chain
Chassis
FRAME
Molybdenum steel / Double Cradle w/ quick air filter access
WHEELBASE
58.1
SEAT HEIGHT
36.6"
GROUND CLEARANCE
12.4"
FOOTREST HEIGHT
16"
DRY WEIGHT
237 lbs
FUEL TANK CAPACITY
2.4 US Gallons
FRONT SUSPENSION
48 mm Sachs SHC w/single spring, adjustment for preload, compression and rebound.
REAR SUSPENSION
Aluminum Body Sachs shock w/ adjustable rebound and hi/low speed compression
FRONT WHEEL TRAVEL
11.1"
REAR WHEEL TRAVEL
11"
FRONT BRAKE
260 mm floating rotor
REAR BRAKE
240 mm rotor
FRONT/REAR RIM
21" (Front) 18" (Rear)
FRONT/REAR TIRE
Maxxis Enduro
NISSIN BRAKING SYSTEM
Equipped with a compact, lightweight, motocross-derived Nissin front brake setup that offers immense stopping power with excellent lever modulation.
ROBUST FRAME
Confirms the use of the upgraded frame layout (featuring a 10mm wider main spar) introduced on previous models, offering superb stability and cornering precision.
SOFTER COMPOUND GRIPS
New, softer grips reduce rider fatigue and arm pump by absorbing trail vibration, allowing you to stay on the gas longer.
LED HEADLIGHT & MASK
A redesigned, aggressive front mask houses a latest-generation LED headlight. It throws a much brighter, safer beam while drawing less power from the battery.
DIAPHRAGM CLUTCH
The classic cup-spring clutch returns, offering three mechanical adjustment levels to customize lever pull and engagement feel.
TOOLLESS REAR SHOCK ADJUSTMENT
The rear shock, tuned to balance the SHC fork, features a redesigned hydraulic damper that better separates high-speed and low-speed dampening circuits. Best of all, adjustments can now be made externally by hand without needing any tools
HEAVY DUTY CHAIN GUIDE
Features a reinforced structure to withstand mud, rocks, and hard impacts from ruts and logs. A straighter, stronger guide ensures final drive stability, prevents thrown chains, and protects the swingarm.
COOLING SYSTEM W/ RECOVERY TANK
Features heavy-duty radiators that resist deformation and coolant flow reduction, paired with a 200cc coolant expansion tank integrated directly inside the frame spar to prevent boil-overs.
FLEXFIX HANDLEBAR MOUNTS
Handlebar risers utilize silent-block rubber mounts to isolate the rider's hands from engine vibration.
FRONT RECOVERY STRAP
Includes the factory-installed front recovery strap featuring the Beta logo, an indispensable tool for tugging the bike out of nasty mud holes or up vertical rock faces.
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