Item No. 1553
Discription

Discounted Price
THUNDER TIGER Outboard Engine 21M-OB (1.04:1)

• Displacement 3.46 c.c. / .211 cu.in.
• Bore 16.6 mm / 0.654 in.
• Stroke 16.0 mm / 0.630 in.
• Practical R.P.M. 3,000 ~ 38,000 rpm
• Output 2.10 BHP / 30,000 RPM
• Weight 720 g / 25.39 oz

Features
Side exhaust. ABN construction : Aluminum piston with Nichel-plated brass cylinder liner. Hyperutectic machined Al-Si ringed piston. High strength connecting rod with bushings pre-installed. SG crankshaft for clutch system. Water-Cooled Cylinder Head. One-piece crankcase with squared-off shape cooling fins. Dual ball bearing-supported crankshaft. 2 Needle valves carburetor. 9mm carb bore. Vertical mounted main needle valve State of the art CNC machined components. Redline R2 glow plug included. Flywheel, Clutch, Coupling, Water-cooled header (optional). Tuned pipe (No. 9723) available.
Suppliers Comments
Thunder Tiger's .21 Outboard engine features a fresh, innovative design that is sure to increase the popularity of the 3.5cc Tunnel Hull class. A race-proven Pro.21 M-R power head is mated to a lower unit that utilizes the best aspects of gear and flex-cable drive technology. A special set of precision helical gears transfers power from the crankshaft to the flex-cable, resulting in substantially reduced cable wear and maintenance, while the integrated expansion chamber/muffler reduces exhaust noise. The engine mount allows adjustment to both propeller depth and angle, and a Prather S215 prop. is also included.

$261.00