Ditto...Been running Webras for 7 years now, both the 145 and 160. The standard Hatori pipe for the OS140 has been used 98% of the time with unsurpassed results. It's a couple ounces heavier than the carbon pipes but is pretty much bullet proof. My buddies who fly the carbon pipes tend to complain a lot about broken innards in the carbon pipes. My planes are usually under 10 pounds so the extra 2 ozs is no big deal

MattK