Built around Lehman Trikes's touring motorcycle platform, the 2018 Lehman Trikes Roadmaster pairs a 1811 cc (110.5 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. In factory specification, maximum torque reaches 151 Nm (111.4 lb-ft) at 2,100 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 101.0 x 113.0 mm (4.0 x 4.4 inches) with a 9.5:1 compression ratio.
Rider ergonomics and chassis geometry center around a 673 mm (26.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,753 mm (69 in) wheelbase engineered for planted straight-line stability. The 20.8-liter (5.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
673 mm (26.5 in)
Engine
Displacement1811.0 ccm (110.51 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsThunder Stroke® 111 engine
Torque151.0 Nm (15.4 kgf-m or 111.4 ft.lbs) @ 2100 RPM
Compression9.5:1
Bore x Stroke101.0 x 113.0 mm (4.0 x 4.4 inches)
Fuel SystemInjection. Closed Loop Sequential Port Fuel Injection
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
ClutchWet, Multi-Plate
Performance
ExhaustSplit dual exhaust with cross-over
Chassis
Frame TypeCast Aluminum Frame with Integrated Air-Box
Rake25.0°
Trail150 mm (5.9 inches)
Front SuspensionTelescopic forks
Front Travel119 mm (4.7 inches)
Rear SuspensionSingle shock with air adjust
Rear Travel114 mm (4.5 inches)
Wheelbase1753 mm (69.0 inches)
Ground Clearance140 mm (5.5 inches)
Wheels & Brakes
Front Tyre130/90-B16
Rear Tyre180/60-R16
Front BrakesDouble disc. ABS. Floating discs. 4 piston caliper.
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
