Overview

2026 Beta Evo300 4 Stroke

Motorcycle

Evo 300 4-Stroke

Trials riding is a proven foundation for improving performance across all on-road and off-road disciplines, making a trials motorcycle an ideal addition to any rider's garage. Because the sport is quiet and low-impact, it can be enjoyed by riders of all ages in a wide variety of settings. Trials offers a customizable level of challenge: you can enjoy a casual afternoon play-riding in a confined space with friends or enter a local competition and choose a skill class tailored for a more structured, competitive experience. As Beta transitions to the all-new Sincro line of trial motorcycles, the Evo line lives on with the proven Evo 300 4-stroke.

For those who like thumpers, the Evo 300 4-stroke is the bike of choice. Over 8 lbs. lighter than the other brands' 4-stroke, as well as a tighter turning radius, the Evo 300 4-stroke is known for being a more gentle bike to ride while also being "whisper-quiet". The bulletproof engine design is easy to work on and will provide years of trial fun!

Starting at $8,990 MSRP

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Specifications

ENGINE TYPE

Single cylinder, 4-stroke, 4-valve, liquid-cooled

BORE

84mm

STROKE

53.6mm

DISPLACEMENT

297.3cc

COMPRESSION RATIO

9.7:1

IGNITION

Electronic 12 Volt w/ dual-map switch (aggressive or soft settings)

SPARK PLUG

NGK MR7BI-8

LUBRICATION

Internal oil pump w/ cartridge filter

FUEL SYSTEM

Mikuni CV

CLUTCH

Wet multi-disc

TRANSMISSION

5 Speed

FINAL DRIVE

O-ring chain

FRAME

Aluminum beam, single wave Hydro-Formed w/ built in tank

WHEELBASE

51.4"

SEAT HEIGHT

26"

GROUND CLEARANCE

12.2"

FOOTREST HEIGHT

13.6"

DRY WEIGHT

155 lbs

FUEL TANK CAPACITY

.75 US Gallons

FRONT SUSPENSION

39mm Ollé w/ hard-coated tubes

REAR SUSPENSION

Adjustable single shock, aluminum bodied, with nitrogen, including linkage

FINAL GEARING

11T Front/42T Rear

FRONT WHEEL TRAVEL

6.5"

REAR WHEEL TRAVEL

7.1"

FRONT BRAKE

185mm rotor w/ 4-piston caliper

REAR BRAKE

160mm rotor w/ twin-piston caliper

FRONT/REAR RIM

21" (Front) 18" (Rear)

FRONT/REAR TIRE

Dunlop D803

SPECS

Specifications subject to change without notice. Additional information on all models including manuals, accessories and parts books are available online at www.betausa.com under SUPPORT.

Hydro-Formed Aluminum Frame w/ Built-in Fuel Cell

Strong and rigid, providing the perfect rider feedback while offering the tightest turning radius in the industry. The rear swing-arm is also made from hydro-formed aluminum.

Tubeless Rear Tire

Provides sidewall flex while running very low tire pressures for added grip. Turn-buckle spoke nipples eliminate the rim strip for easier tire changes.

Electronic key

The key is composed of two parts: one part remains fastened to the bike's handlebars, while the other is magnetic (worn by the rider with a cord around their wrist), activating a mechanism in the event they are disconnected, functioning as a “Kill-Switch”. Unlike a normal kill switch, the new electronic key also incorporates an anti-theft function, preventing the bike from being started when disconnected, thanks to coding that uniquely links the bike to the key, protecting against theft of the vehicle when it is left unattended.

Plastic and Airbox

Minimal plastic pieces to reduce weight, including a formed tank cover that provides the proper routing of all cables and wires. The one-piece rear fender has an access lid for a quick air filter change.

2026 Beta Evo300 4 Stroke

Evo 300 4-Stroke

Specs & Features

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