Current Beta Off-Road-Race 350 RR Race 4-Stroke

2025 Beta 350 RR Race 4-Stroke Base

2025 Beta 350 RR Race 4-Stroke Base

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Exterior Colors:

  • Year 2025
  • Make Beta
  • Model 350 RR Race 4-Stroke
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Product Details Specifications Photos
2025 Beta 350 RR Race 4-Stroke Base

2025 Beta 350 RR Race 4-Stroke Base

  • Year 2025
  • Manufacturer Beta
  • Model Name 350 RR Race 4-Stroke
  • Trim Name Base
  • Generic Type (Primary) Off-Road
  • Engine Type Single cylinder, 4 –stroke, 4-valve (Titanium intake and exhaust), electric start
  • Cooling System Liquid cooled
  • Displacement 349.1cc
  • Bore 88mm
  • Stroke 57.4mm
  • Compression Ratio 13.19:1
  • Lubrication Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission
  • Fuel System 42mm Throttle Body w/Dual Injectors
  • Valve train Titanium Intake & Exhaust
  • Ignition Dual-Map Kokusan 200w output
  • Spark Plug NGK LKAR8A-9
  • Carburetion Kelhin PWK 36mm

2025 Beta 350 RR Race 4-Stroke

Quick, precise, and lean best describe Beta's new RR Race models for the 2025 season. With a new, shortened name to simply “RR Race” to get straight to the point. The 2025 RR Race lineup provides riders with a model whose performance is second to none.

The 2025 RR Race bikes represent the race-ready versions of Beta's newly-introduced X-Pro models, with a series of modifications to the engine, suspension, and frame, making them ideal for providing their best on the track. Designed for both low and high-speed courses, the Race models will provide riders with the confidence and Rideability that only Beta can deliver.

All four-stroke Race models receive new crankcases, derived from the engine used on the RX 450. The main benefit deriving from the use of this new component lies in the smaller size and lighter weight compared to the previous model.

Features may include:

  • Front brake calliper:

A lighter and higher-performance Nissin calliper that provides an improved front brake feel. This new design provides a factory-like front brake system.

  • Larger rear wheel axle:

This new axle offers greater stiffness providing the rider with better feedback while improving turning. The rear swingarm has also been updated to accommodate the new axle.

  • New Machined alloy footpegs:

redesigned for 2025 with a new shape that provides better boot traction in muddy and unstable conditions.

Engine

Engine Type Single cylinder, 4 –stroke, 4-valve (Titanium intake and exhaust), electric start
Cooling System Liquid cooled
Displacement 349.1cc
Bore 88mm
Stroke 57.4mm
Compression Ratio 13.19:1
Lubrication Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission
Fuel System 42mm Throttle Body w/Dual Injectors
Valve train Titanium Intake & Exhaust
Ignition Dual-Map Kokusan 200w output
Spark Plug NGK LKAR8A-9
Carburetion Kelhin PWK 36mm

Drivetrain

Clutch Wet Diaphragm-style
Transmission 6 Speed
Final Drive O-ring chain
Final Gear 13T Front/50T Rear

Chassis

Frame Type Molybdenum steel / Double Cradle w/ quick air filter access
Exhaust Beta Progressive Valve (BPV)

Suspension

Front Suspension 48 mm KYB AOS closed cartridge fork, adjustable compression & rebound
Rear Suspension KYB 46mm body with adjustable rebound and high/low speed on compression adjustment

Brakes

Front braking system 260 mm floating rotor
Rear braking system 240 mm rotor

Wheels & Tires

Front Wheel Travel 11.8"
Rear Wheel Travel 11.4"
Front Wheel 21"
Rear Wheel 18"
Front Tire Maxxis Maxx Enduro
Rear Tire Maxxis Maxx Enduro

Dimensions

Wheelbase 58.1"
Seat Height 37.4"
Ground Clearance 13.2"
Height Footrest: 16.8"

Capacities

Fuel Capacity Tank: 2.4 US Gallons

Weights

Dry Weight 237 lbs (wet weight, no fuel)

Product Photography