Question: Has the VMAX Pitts Style Muffler been upgraded? If so, what changed and how can I tell an upgraded muffler from earlier production?

Answer: Yes in mid 2004 the VMAX Pitts Style Muffler was upgraded. These are sold as stand alone mufflers to fit most popular 46-52 and 61 size engines AND provided at no charge per various special offers.

Here is what changed: 

• The fit and finish was greatly improved.
• The production of the crankcase mounting flange was moved to an automated process to improve the consistency of flatness, fit, spacing between mounting holes and the bolt hole threads.
• A new high temperature plating process was implemented.
• The exterior color was changed from black to silver.
• In early 2005 a logo was impressed into the product.