The BOS original slip-on 2-2 rear silencers have a beautiful, deep and rich sound. The dB-eaters can be removed and everything needed for installation is included in the scope of delivery. An E-number is engraved on the silencer, which serves as proof of approval. Thanks to their high-quality workmanship, the BOS original Slip-on 2-2 rear silencers are a real eye-catcher on the Yamaha TRX 850.