Excellent clean condition OS35AX RC engine tfdt I believe never been inva plane, only bench run by previous owner and a Nelson tuned muffler that boosts power and sounds great.
I've never used these myself as I never had a chance to, way too many projects way too little time.
This would suit someone that wants a .40 power in a .25 size package.
Perfect for a medium size Sports model or a sports pylon racer or a practice model.
Keep in mind the engine sells for $270 plus - if you can find it in stock, Nelson muffler itself sells for $150 min including postage.
Offered here for $155 including postage in Australia
SMS or email only pls. Can't answer phone.