At the heart of the 2018 HM Derapage RR 4T super motard motorcycle, HM pairs a 124.7 cc (7.6 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 52.0 x 58.6 mm (2.0 x 2.3 inches) with a 11.2:1 compression ratio.
On the scales, the Derapage RR 4T measures 106 kg (234 lbs) dry. Rider ergonomics and chassis geometry center around a 902 mm (35.5 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,452 mm (57.2 in) wheelbase engineered for balanced agility and highway composure. The 7.3-liter (1.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
902 mm (35.5 in)
Engine
Displacement124.7 ccm (7.61 cubic inches)
Engine TypeSingle cylinder, two-stroke
Compression11.2:1
Bore x Stroke52.0 x 58.6 mm (2.0 x 2.3 inches)
Valves/Cylinder4
Fuel SystemCarburettor. Keihin CVK, 30 mm
Fuel ControlSingle Overhead Cams (SOHC)
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet, multi-plate
Performance
Emission DetailsEuro 3
Chassis
Frame TypeAluminium perimeter frame
Front SuspensionUSD fork
Front Travel260 mm (10.2 inches)
Rear SuspensionMono shocks
Wheelbase1452 mm (57.2 inches)
Ground Clearance295 mm (11.6 inches)
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre140/70-17
Front BrakesSingle disc
Front Brake Ø290 mm (11.4 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight106.0 kg (233.7 pounds)
Seat Height902 mm (35.5 inches) If adjustable, lowest setting.
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
