The Mototec Blue Thunder is a 50cc 2-stroke, air-cooled dirt bike sized for younger riders. It has an automatic centrifugal transmission, a pull-start engine and chain final drive. The throttle is variable twist-grip, and a throttle limiter lets the speed be restricted.
The frame is chromoly steel, and the wheels are aluminum alloy. Suspension is a front inverted fork with a 190.5mm rear mono shock. Disc brakes are fitted front and rear. The bike has higher-grade wheel bearings, longer-wearing and higher-grip tires, and a high-grade easy-start pull cord.
The seat is padded and fits a single rider. The handlebars adjust in angle but not in height. The bike is CE and EPA approved and requires assembly.
- Engine
- 50cc 2-stroke, air cooled (competition use only)
- Fuel mix
- Unleaded gas and oil at a 25:1 ratio
- Bore x stroke
- 44.02mm x 33.2mm
- Rated output
- 2.4 hp at 7,000 rpm
- Start
- Pull start
- Transmission
- Automatic centrifugal
- Chain
- 11T/54T, T8F size
- Carburetor jets
- 2.00mm (main) and 0.67mm
- Fuel tank
- 1.6 liters
- Range
- 10+ miles per tank
- Throttle
- Variable twist-grip, with throttle limiter
- Recommended age
- 13+
- Max rider weight
- 150 lbs
- Frame
- Chromoly steel
- Wheels
- Aluminum alloy, front and rear
- Tires
- 2.50-10, front and rear (15 inch diameter, 2.5 inch wide)
- Brakes
- Front disc, rear disc
- Suspension
- Front inverted fork, rear 190.5mm mono shock
- Seat
- Padded, single rider
- Handlebars
- Angle adjustable, not height adjustable
- Seat height
- 22 inches; 23 inches measured from the ground
- Wheelbase
- 35 inches (890mm)
- Ground clearance
- 9 inches
- Dimensions
- 50 x 23 x 32 inches
- Dry weight
- 54 lbs
- Box size
- 44 x 13 x 23 inches
- Box weight
- 64 lbs
- Assembly
- Required
- Approvals
- CE and EPA approved
- Warranty
- 30 days parts replacement