At the heart of the 2021 Derbi Senda DRD X-Treme 50 SM super motard motorcycle, Derbi utilizes a 49.9 cc (3 cu in) liquid-cooled single cylinder, two-stroke layout. Internal engine geometry specifies a bore and stroke of 39.9 x 40.0 mm (1.6 x 1.6 inches) with a 11.5:1 compression ratio.
On the scales, the Senda DRD X-Treme 50 SM measures 99 kg (218 lbs) dry. Rider ergonomics and chassis geometry center around a 860 mm (33.9 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,365 mm (53.7 in) wheelbase engineered for quick, flickable steering geometry. The 7-liter (1.8 US gal) fuel tank paired with a rated consumption of 3.14 L/100 km provides an estimated theoretical range of roughly 223 km (139 miles) between fill-ups.
Within MotoLibrary's Derbi archive, this model family spans 6 indexed model years from 2011 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Theoretical Range
~223 km (139 mi)
Engine
Displacement49.9 ccm (3.04 cubic inches)
Engine TypeSingle cylinder, two-stroke
Compression11.5:1
Bore x Stroke39.9 x 40.0 mm (1.6 x 1.6 inches)
Valves/Cylinder4
Fuel SystemCarburettor
LubricationAutomatic mixer
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMulti-plate, wet
Performance
Fuel Consumption3.14 litres/100 km (31.8 km/l or 74.91 mpg)
Greenhouse Gases72.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro 4
Chassis
Frame TypeTwin-tube steel frame
Front SuspensionElescopic hydraulic fork with Ø 37 mm stanchions
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.
