These are the known mechanical and performance specifications for your 2018 Lehman Trikes Chieftain.
Basic Specs

Engine
Displacement1811.00 ccm (110.51 cubic inches)
TypeThunder Stroke® 111 engine
DetailsV2, four-stroke
Max RPM
Compression9.5:1
Bore/Stroke101.0 x 113.0 mm (4.0 x 4.4 inches)
Valves/Cylinder
FuelingInjection. Closed Loop Sequential Port Fuel Injection
Ignition
ExhaustSplit dual exhaust with cross-over
Lubrication
CoolingAir
Performance
Horespower
Torque150.00 Nm (15.3 kgf-m or 110.6 ft.lbs)
Top Speed
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity20.80 litres (5.50 gallons)
Emissions
Chassis
Frame TypeCast aluminium
Rake25.0°
Trail150 mm (5.9 inches)
Front SuspensionTelescopic forks with air adjustment
Front Travel119 mm (4.7 inches)
Rear SuspensionIndependant
Rear Travel114 mm (4.5 inches)
Seat
Seat Height660 mm (26.0 inches) If adjustable, lowest setting.
Alt. Seat Height
Total Height1,388 mm (54.6 inches)
Total Length2,571 mm (101.2 inches)
Total Width1,521 mm (59.9 inches)
Ground Clearance
Wheelbase1,668 mm (65.7 inches)
Dry Weight
Wet Weight
Wheels & Brakes
Front Tire/Tyre130/60-B19
Rear Tire/Tyre180/60-R16
Front BrakesDouble disc. ABS. Floating discs. 4 piston caliper.
Front Brake Diameter300 mm (11.8 inches)
Rear BrakesSingle disc. ABS. Floating disc. 2-piston caliper.
Rear Brake Diameter300 mm (11.8 inches)
Wheels
Comments
Sold as a kit to build a trike from an Indian Chieftain motorcycle.