- Briggs & Stratton
- Available in several variations:
- 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!
- B91 MMRA Legal Exhaust
- Ideal for the MMRA 4-Cycle categories.