User Rating: /5 · No user ratings yet✓ Your rating was saved
Technical Overview
2020 Thumpstar MX 50 SR Technical Analysis & Specification Breakdown
Engineered by Thumpstar for the minibike, cross motorcycle segment, the 2020 Thumpstar MX 50 SR pairs a 49 cc (3 cu in) single cylinder, two-stroke architecture with road-focused gearing.
On the scales, the MX 50 SR measures 41.5 kg (91 lbs) dry. Rider ergonomics and chassis geometry center around a 684 mm (26.9 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,032 mm (40.6 in) wheelbase engineered for quick, flickable steering geometry. The 2.3-liter (0.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
684 mm (26.9 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Fuel SystemCarburettor. Mikuni 19mm
Transmission
ClutchCentrifugal
Chassis
Frame TypeCentral-Tube Frame with Double-Cradle
Front SuspensionUSD fork
Rear SuspensionVS 1 Shock Absorber
Wheelbase1032 mm (40.6 inches)
Ground Clearance252 mm (9.9 inches)
Wheels & Brakes
Front Tyre2.50-10
Rear Tyre2.5-10
Front BrakesExpanding brake (drum brake)
Front Brake Ø160 mm (6.3 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø160 mm (6.3 inches)
WheelsSteel Rim
Dimensions & Weight
Dry Weight41.5 kg (91.5 pounds)
Seat Height684 mm (26.9 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.
