2019 Beta Motorcycles Enduro RR 4T 390


Beta Motorcycles
Enduro RR 4T 390



The new Beta RR my 2019 arrives on the market with a broader range than in previous years. The Beta philosophy is to make sure each engine size has its own distinct personality so as to meet the specific needs of every enduro rider.

Of course, there's been no lack of upgrades across the existing range either, with improvements stemming from extensive race experience: in the last two years Beta has won two EnduroGP Manufacturers World Championships, an Enduro3 World Title and EnduroGP title with Steve Holcombe, an Enduro Junior World Title with Brad Freeman and two wins in the Assoluti d’Italia. Work has focused on both the engine and the chassis setup, with particular attention being paid to the suspension – front and rear – now fitted with top-drawer ZF Sachs components which are much more advanced than those used in the past.

  • Delivering an excellent handling-power mix, its winning feature is outstanding traction. The engine is very unique in that it feels lighter yet still provides added torque and power.
  • New throttle control: designed by Domino exclusively for Beta for improved engine response to minimal throttle twists, giving optimized traction even on the most difficult terrain.
  • New mapping for all engine sizes combined with the excellent response of the new throttle control.
  • Clutch actuator with wider diameter: gives the clutch lever a softer, more responsive feel.
  • New ZF Sachs (ø 48 mm) fork with new adjustment system: allows positioning of the compression, rebound and spring preload adjusters on the upper fork cap; they can be reached while sitting on the bike and do not require tools. The fork also benefits from a new packing system which ensures greater stability and a slider with special anodizing that reduces friction and increases durability.
  • New fork shoes (yoke): stiffer and lighter.
  • New fork guards: designed together with the shoe to combine practicality and design.
  • Fully redesigned ZF Sachs shock: with more compact ø 46 mm piston, about 300g lighter. The new piston has been designed to ensure more stable operation as the oil temperature varies and increased sensitivity to enhance comfort and traction. The small upper base and reservoir have also been redesigned to rationalize the system and minimize weight and bulk. New spring is also lighter.
  • New graphics and colors.
  • Frame: Molybdenum steel with double cradle split above the exhaust port
  • Wheelbase: 1490 mm
  • Max length: 2180 mm
  • Max width: 807 mm
  • Max height: 1270 mm
  • Seat height: 940 mm
  • Ground clearance: 320 mm
  • Footrest height: 413 mm
  • Dry weight: 109.0 kg (front 52.5 kg; rear 56.5 kg)
  • Fuel tank capacity: 8.0 L
  • Reserve: 2.0 L
  • Cooling system capacity: 1.4 L
  • Front suspension: Hydraulic USD fork with ø48 mm shaft
  • Rear suspension: Monoshock with progressive compound lever
  • Shock absorber stroke: 135 mm
  • Front wheel travel: 295 mm
  • Rear wheel travel: 290 mm
  • Front brake: Wave disc ø260 mm and double-piston floating caliper
  • Rear brake: Wave disc ø240 mm and single-piston floating caliper
  • Front rim: 21 x 1.6 - 36 holes
  • Rear rim: 18 x 2.15 - 36 holes
  • Front tire: 90/90 - 21
  • Rear tire: 140/80 -18
  • Type: Single cylinder, 4-stroke, liquid-cooled
  • Bore: 88 mm
  • Stroke: 63.4 mm
  • Displacement: 385.6 cc
  • Compression ratio: 12.48:1
  • Valve train: DOHC finger follower / 4 titanium valve
  • Starter: Electric starter
  • ACG: Kokusan
  • Spark plug: NGK LKAR 8A-9
  • Lubrication: 2 oil pumps
  • Fuel system: Synerject dual electronic injection
  • Throttle body: Ø 42 mm - Synerject
  • Clutch: wet multi-disc clutch
  • Primary drive: Z. 28/76
  • Transmission: 6 gears
  • Final transmission: chain
  • Engine oil: SAE 10W/50 0.8 L + SAE 10W/40 0.8 L
  • Consumption: l/100 km 3,89
  • Pollution: Co2 [g/km] 94



385.6 cc
Bore and Stroke
88 mm x 63.4 mm
Compression Ratio
Fuel System
Synerject dual electronic injection


Front Suspension
Hydraulic USD fork with ø48 mm shaft
Front Brakes
Wave disc ø260 mm and double-piston floating caliper
Front Tire
90/90 - 21
Rear Suspension
Monoshock with progressive compound lever
Rear Brakes
Wave disc ø240 mm and single-piston floating caliper
Rear Tire
140/80 -18


Dry Weight
109.0 kg (front 52.5 kg; rear 56.5 kg)
Fuel Capacity
8.0 L
1490 mm
Ground Clearance
320 mm
Seat Height
940 mm


6 gears
Final Drive

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