The UFO Jekyll and Hyde Exhaust™ is the newest addition to the Gen 2 Vmax exhaust product line. This new exhaust features a new dual megaphone design that gives your Vmax a dual personality. Under normal operation the exhaust will be much like stock, whack the throttle and your Vmax’s exhaust note is transformed into a monstrous tone.
The Jekyll & Hyde Exhaust™ production pipes as well as most of the exhaust systems that UFO Performance Products™ produces, are in a constant state of performance evolution. We rigorously test all of our products using our in house dyno and countless hours of race track testing to provide our customers with proven results. Performance gains, appearance, and the effort required to install the product are always key factors that we evaluate. Each time we make production runs for the consumer market we evaluate the current product and incorporate any changes to the end-product that we find note-worthy. UFO Performance Products™ is dedicated to providing you with the best products on the planet!
We have two options for this exhaust, full system or upgrade. If you already own the UFO ThunderMax™ exhaust system you can upgrade to the Jekyll and Hyde Exhaust™ for $650.00.















Purchasing Options:
| Part Description | Price | Shipping | Buy |
|---|---|---|---|
| UFO Jekyll & Hyde Exhaust™ (Full System) | $1600.00 | $28.00 | |
| UFO Jekyll & Hyde Exhaust™ (Upgrade Only) | $650.00 | $22.00 |
*The shipping amount above applies to orders within the Continental United States. Shipment outside of the Continental United States may result in higher shipping fees.




Hi Jon
I finally got the ThunderMax and Jekyll and Hyde systems last week, (while I was still away).
I just got back for a few days, have fitted them and very impressed. Very good quality and the ThunderMax is most definitely a deep glorious/angry note and bloody loud.
Thankfully I ordered the Jekyll and Hyde also, as it is a bit easier on the ears around town. At low RPM it is a nice VMAX note in 1st, 2nd, and 3rd and when into 4th the change is extraordinary. It changes to a very deep quality exhaust note.
P.S. The quality of the headers matching both exhausts exactly, makes it a 10 to 15 minute job to change over to either exhaust. Perfect slide on fit.
Just what I required. Thanks , Vic