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 OR4TK 250

Single cylinder 4 stroke

 

NOTE: Specifications contained herein may be subject to change.

 

Bore: 78 mm

Stroke: 52 mm

Displacement: 248.5 cc

Rod length: 100 mm

Clutch: Centrifugal

Transmission: chain

Distribution: Dual overhead cam shaft

Valve Intake / Exhaust valves 4

Power System

 

Carburetor: Dell'Orto 30 mm (optional: 26mm or 38 mm)

Air filter: Box filter with replaceable filter element

Noise level: <dbA 100

Cooling System

 

Water cooling

Water Pump integrated into crankcase

Ignition and starting

 

Electronic ignition with variable advance

Battery and charger

Programmable engine RPM limiter

Electric start

Exhaust System

 

Second exhaust regulations

Reduced exhaust emissions

Performance

K1 version: 38 mm carburetor, 29.1 kW (39 hp) @ 13,000 revs / 1 '

K2 Version: Carburetor 30 mm, 26 kW (35 hp) @ 13,000 revs / 1 '

Version junior K3: Carburetor 20 mm, 16.7 kW (22.5 hp) @ 10,000 revs / 1 '