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O.S. Engines

25LA-S Control Line ABN w/Muffler

The easy choice in sport performance!

O.S. 25LA-S Control Line ABN w/Muffler
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Why burn daylight fiddling with a finicky motor? Take the easy way out, with an engine that's as powerful and dependable as the day is long: LA-Series engines from O.S. are flier favorites because they are easy: easy to afford, easy to run, easy to maintain – and hard to beat for powerful, dependable performance. That's because O.S. has worked hard to make them that way. With CNC-machined parts, for precise fit and finish. Heavy "webbing" on one-piece crankcases to resist distortion and prevent binding. A tall heat sink head and crankcase fins so LA engines cool better and last longer. And with nylon backplates that include an integral, molded-in fuel inlet and needle-valve holder.

Displacement: 4.07cc (.249 cu in) Bore: 18mm (.709") Stroke: 16mm (.630") Output: 0.6 bhp @ 15,000 rpm Practical rpm: 2,000 - 16,000 rpm Weight: 185.5g (6.54oz) Recommended Prop: Break in: 9x6, Aerobatic and Sport: 9x6, 10x5

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