Dirt Bikes

2024 Beta 350 RR Race Edition Technical Information

Features and specifications of Beta’s up-spec 350 four-stroke enduro.

July 2, 2024

Beta’s four-stroke Race Edition lineup has four displacements: 349cc, 386cc, 431cc, and 478cc. These thumpers feature a more rigid double-cradle chromoly steel frame in 2024 to improve stability in corners and reduce flex under heavy load. All Race Edition models are intended for more of a serious racer with several upgraded performance parts along with race team livery. Here are some highlights of the smallest-displacement four-stroke in Beta’s up-spec off-road motorcycle range, the 350 RR Race Edition.

Beta’s 350 RR Race Edition is not to be mistaken for the standard model with its bold red and blue bodywork, up-spec components, and race team graphics.Mark Kariya

The Italian-built fuel-injected liquid-cooled four-stroke 349cc single-cylinder engine has a bore of 88.0mm, stroke of 57.4mm, and compression ratio of 13.2:1. Cylinder head is a DOHC finger-follower design, and throttle body is a 42mm with dual injectors. Peak figures from this mill on our rear-wheel dyno are 38.7 hp and 24.9 lb.-ft. of torque.Mark Kariya

Gearbox is a wide-ratio six-speed, and there’s twin oil pumps with separate compartments for engine and transmission oils. If desired, you can add a kickstarter for backup.Mark Kariya

Most Beta dirt bikes have a thermostat to keep the engine at proper temperature for those in colder climates.Mark Kariya

The electronics under the seat and air filter are accessible without tools. Beta uses a lightweight lithium battery and high-end Twin Air air filter.Mark Kariya

The sleek and streamlined muffler has a good tone and no spark arrestor.Mark Kariya

A well-designed fuel tank makes it hard to believe it holds a generous 2.4 gallons.Mark Kariya

There’s an engine map switch with settings described as sunshine or rain, the latter for wet and slippery conditions, and traction control that can be turned on and off.Mark Kariya

Engine start and stop switch has large buttons that are easy to reach and use.Mark Kariya

Dashboard displays mileage, trip distance, engine hours, and time.Mark Kariya

The most significant feature of Beta’s Race Edition models is the suspension. Up front, we find a KYB Air-Oil Separate (AOS) 48mm closed-cartridge coil-spring fork that offers 11.6 inches of travel, and compression and rebound damping adjustability on both legs.Mark Kariya

Fork is complemented by a KYB C46 shock with a 46mm body and full adjustability including spring preload, low- and high-speed compression damping, and rebound damping tunability. Rear wheel travel is 11.4 inches.Mark Kariya

Like Beta’s standard-model off-roaders, the Race Editions feature Nissin brakes with 260mm front and 240mm rear rotors.Mark Kariya

A Race Edition–specific feature is the front axle pull for quick front wheel replacements and tire changes.Mark Kariya

Beta specs its Race Editions with a dual-ring steel-over-aluminum rear sprocket for added durability in extreme muddy conditions.Mark Kariya

Billet-aluminum footpegs with stainless steel gripper pins are yet another Race Edition–only item.Mark Kariya

On Dirt Rider’s automotive scales, the 2024 Beta 350 RR Race Edition weighs 263 pounds wet.Mark Kariya

2024 Beta 350 RR Race Edition Specs

MSRP:	$10,999
Engine:	DOHC, liquid-cooled, four-stroke single-cylinder; 4-valve
Displacement:	349cc
Bore x Stroke:	88.0 x 57.4mm
Compression Ratio:	13.2:1
Transmission/Final Drive:	6-speed/chain
Dirt Rider Measured Horsepower:	38.7 hp @ 9,800 rpm
Dirt Rider Measured Torque:	24.9 lb.-ft. @ 6,800 rpm
Fuel System:	EFI w/ 42mm throttle body
Clutch:	Wet, diaphragm; hydraulic actuation
Frame:	Double-cradle chromoly steel
Front Suspension:	KYB Air-Oil Separate (AOS) 48mm closed-cartridge coil-spring fork, compression and rebound damping adjustable; 11.6 in. travel
Rear Suspension:	KYB C46 shock, spring preload, high/low-speed compression damping, and rebound damping adjustable; 11.4 in. travel
Front Brake:	Nissin 2-piston caliper, 260mm floating disc
Rear Brake:	Nissin 1-piston caliper, 240mm disc
Tires, Front/Rear:	Maxxis MaxxEnduro; 90/90-21 / 140/80-18
Rake/Trail:	N/A
Wheelbase:	58.7 in.
Ground Clearance:	12.6 in.
Dirt Rider Measured Seat Height:	37.7 in.
Fuel Capacity:	2.4 gal.
Dirt Rider Measured Wet Weight:	263 lb.
Availability:	Now
Contact:	betausa.com