I just bought the XTX Tunnel Bag from Sled Solutions. Paul was great to deal with - kept his word and super fast delivery. The bag is great quality. It is made to fit under the exhaust, but still requires the turnout. It has a thick heat deflector in the bottom, 4 riveted buckles and 2 velcro attachment points. I bought it hoping it would hold 4 Primos 1.5 liter fuel bottles, and the bottles fit like a glove! It's like the bag was made to hold them! Now I can carry 1.6 gallons of fuel on the tunnel instead of messing with the hassle of a Trail Tank install. 99% of the time the OEM tank is sufficient, so in my opinion the extra fuel caddys are more than adequate than the expensive TrailTank. Just my opinion, but check it out ... isorry about the quality, but it's a grainy cell phone pic. Trust me - very snug. They definitely will NOT be boucning around, plus there is room for a pair of gloves and a hat!