1. PRO-21M-OB engine x 1 EA 2. Carburetor Assembly x 1 EA 3. Allen wrench x 3 EA (2.5mm ＆2mm ＆3mm) 4. Instructional manual x 1 EA 5. TT logo sticker x 1 EA
The Thunder Tiger Pro-21M-OB Outboard engine features an innovative design bound to greatly increase the popularity of the 3.5cc Tunnel Hull class.
A race-proven powerplant is mated to a lower unit utilizing the best gear ratio and flex-cable technologies. A special set of precision helical gears transfers all the 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 allow adjustments to both propeller depth and angle.
To top it off, a Prather S215 prop is included.
The PRO-21M-OB (No. 9567) is equipped with 1.19:1 gear ratio