OS 55 AX
from O.S.

2 Stroke IC Engine

Displacement: 0.545 cu in (8.93cc), Bore: .91 in (23mm), Stroke: 0.85 in (21.5mm), Weight: 14.3oz (404g), Recommended Props: 11x6, 11x7, 12x6, 12x7, 13x6

The OS Max 55 AX ABL is the very latest in the new AX line of engines. The AX series offer unique styling, powerful and reliable service and a reputation that can not be faulted. The 55AX is designed to combine maximum power with razor sharp throttle response in the smallest possible crankcase.

 

The 55AX features:

 

Same mounting dimensions as the O.S. Max 46 AX

Advanced Bi-Metallic Liner (ABL) process uses a double layer of plating material rather than one thick layer. This helps the metal bond to the cylinder and makes the plating more durable. Also, the plating process is more consistent, resulting in a more precise fit between piston and sleeve for better compression and  longer life.

Angular head design offers increased surface area for better cooling

P.Box muffler for improved silencing and compact installation.       

Ball bearing-supported crankshaft

40J carburettor with diagonally placed needle valve eliminating remote needle valve placement supplied with flexible wire extension.