As you likely know, FMF is one of the (if not THE) finest aftermarket exhaust companies for off-road motorcycles. A few years ago FMF started a new division (known as APEX) that builds exhaust for street bikes. While APEX initially only offered its wares for full-on sports bikes, it is now expanding its line to incorporate other models ... including the 2003-2009 Interceptor VFR800. I recently installed FMF's new system on my 2007 25th Anniversary Interceptor and I love it. Noted below are my thoughts regarding the system:
1. I almost spent the time/money to do the "hollow-out" trick for my factory exhaust, but decided not to as the sound can be somewhat sharp/raspy at mid/high rpm. The FMF system offers a very nice, very throaty sound that is more of a growl than a wail. At my work a guy regulary rides in on an RC51 ... and my VFR with the FMF exhaust now sounds very similar to the RC51.
2. The FMF exhaust pipework is constructed of mandrel-bent, larger diameter, polished stainless-steel. The mufflers are constructed of a combination of carbon fiber and titanium. Overall, the FMF system is 12 pounds ligher than the factory exhaust. Of particular benefit, that's a 12 pound reduction from the worst possible place to have weight on a bike ... up high. Thus, the VFR is now less top heavy.
3. On a chassis dyno, the VFR made 7 more peak horsepower versus stock ... plus it made more average power everywhere throughout the rpm range. Now when I grab a fist full of throttle in First gear, the VFR does a nice wheelie (without clutching it). Next up is a Power Commander V to fully maximize the power potential.
4. While other aftermarket (such as from Two Brothers) exhaust systems for the VFR are nice, most aftermarket systems use somewhat ugly clamp assemblies (that wrap around the outside of the mufflers) to mount the exhaust. The FMF mufflers have integrated mounting tabs that not only look much nicer/cleaner, but are lighter than the big clamp assemblies.
5. The FMF mufflers are available in two build choices: carbon fiber body with titanium ends (that's what I opted for) or titanium body with carbon fiber ends (nice, but it didn't seem to blend in as nicely with my bike's colors).
6. I tried to find a hyperlink showing the complete FMF/APEX system for the VFR, but all I can find is a link that shows the mufflers used ...
Products - Street - FMF Racing
If I can find a better hyperlink then I'll post it later.
7. The cost of the FMF titanium/carbon full exhaust system is $999 ... which seems to be about the same price as most other aftermarket systems.
8. If someone can share with me how to upload photos to this posting, then I would be happy to post a few shots of my bike with the new FMF exhaust system.