PRO 21M (Outboard) Κινητήρας Thunder

A race-proven PRO-21M power head is mated to a lower unit that utilizes the best aspects of gear and flex-cable drive technology. A innovative design that is sure to increase the popularity of the 3.5cc Tunnel Hull class.

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 expasion chamber (muffler) reduces exhaust noise.

The Marine series are manufactured by automated computer-controlled machinery, resulting in a product that looks and performs better. The engine mount allows adjusment to both propeller depth and angle with a Prather S215 propeller which is included. Precision air bleed carburetor makes adjustments simple.

Specifications:

•  Displacement: 14.78 cc. / 0.902 cu. in. 
•  Bore: 28 mm. / 1.102 in. 
•  Stroke: 24 mm. / 0.945 in. 
•  Crankshaft: UNC 5/16 - 24 
•  Practical RPM: 2,000 ~ 16,000  
•  Output: 2.75 BHP / 15,000 RPM 
•  Weight: 575 g. wo/muffler / 20.28 oz.

Features

· Top grade CNC  technology used

· ISO9001 Certified

· Gear drive / flex cable

· Prather S215 propeller which is included 

· Adjustable prop depth and running angle 

· Air bleed carburetor makes adjustments simple