New VS PTO .21 Powerhead Engine

The new and exclusive VS Powerhead .21 marine engine is based on the very powerful O.S. Speed 21ZX-R on-road racing engine and is an extraction of the world famous O.S. Max precision and technology together with an additional 'Rody' touch and development.

Features:

• Reliable O.S. SPEED quality, power and spare parts availability.
• A specific 'Rody' shaped crankshaft with left threaded thread so the flywheel will not unscrew itself.
• PTO Air cooled cooling-head for easier setting of the carburetor and more stable temperatures.
• A specific 'Rody' 7-Port liner with MES exhaust system.
• Combustion chamber for conical (turbo) glow plugs.
• A carburetor is NOT included so you are free to choose the carburetor of your liking, as long as it has a neck diameter of 15 mm.

• We suggest to use with this engine maximum 25% nitro fuel.
• Use it on the O.S. Lower Unit. 

Specifications:

• Type: VS POWER HEAD ENGINE 21
• Size: .21 (3.5cc)
• Bore: 16.27 mm
• Stroke: 16.80 mm
• Crankshaft: 14 mm CWR
• Cylinder: 7T ABC
• Ports Intake: 7
• Ports Exhaust: 3
• Carburetor: Not Included (15 mm neck dia)
• Cooling-Head: 49 mm / 7-fins
• Glow plug: Turbo / Conical (not included)

We have obtained great performances with this VS PTO .21 Powerhead engine in combination with our self developed exhaust system (Part #HIP2034-OBL), together with the O.S. Max 21D carburetor (Part #23882000).

LINK to the Webshop.