B91XL - 1 5/16" OD pipe, and also fits 1 1/4" OD pipes when using a small shim. **This is the most common exhaust silencer option, and is used for the LO206!**
B91 - 1 1/8" OD
Fits 1 1/8" OD, and 1 1/16" OD exhaust pipes
B91L - 1" OD
Fits 1" OD pipes, and 15/16" OD pipes
B91MO
Modified and "Open" engines, fits 1 5/16" piping.
B91 Mini (Threaded)
Ideal for Briggs Mini 91 XL Motor. Threaded Pipe End seals tightly for more horsepower!
This exhaust features 3/4 NPT threading (0.07143 pitch) and seals tightly to generate more horespower than Briggs & Stratton silencers!
