At the heart of the 2007 Lem RX 65 cross - motocross motorcycle, Lem pairs a 64.9 cc (4 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 17.4 HP (12.7 kW) at 12,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 268.1 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the RX 65 measures 56.2 kg (124 lbs) dry, translating to a power-to-weight ratio of 0.31 HP/kg (3.23 kg per horsepower). The 2-liter (0.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
268.1 HP/L
Power-to-Weight
0.31 HP/kg (3.23 kg/HP)
Engine
Displacement64.9 ccm (3.96 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power17.4 HP (12.7 kW)) @ 12500 RPM
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
Ignitionelectronics with micro processor
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Performance
Exhaustexpansion with silencer
Chassis
Frame TypeSteel tubes with alluminium swing-arm, brake pedal and rear body
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
