UP FOR SALE IS AN OS 25 FSR BB CONTROL LINE ENGINE COMPLETE WITH MUFFLER. READY TO INSTALL ON YOUR CONTROL LINE PROJECT. 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!