UP FOR SALE IS AN OS MAX 50 CONTROL LINE ENGINE IN EXCELLENT REFURBISHED CONDITION. STRONG COMPRESSION. READY TO INSTALL ON YOUR CONTROL LINE PROJECT. COMES WITH T-MUFFLER. I HAVE ALL TYPES OF OS & ENYA C/L VENTURIS & NVA FOR SALE OR ON AUCTION.IF YOU DONT SEE IT ASK.SEE MY OTHER AUCTIONS FOR PARTS.WILL COMBINE SHIPPING Check out my other items!Be sure to add me to your favorites list! ANY QUESTIONS? 9542340863 Bob