Not offended at all. The truth is they work whether you recommend them or not or whether you have insurance or don't. The swingarm or extensions carry about the same liability as a built motor, there is none truth be told. they are meant for off road usage alright. I'm willing to bet my life on this one right here. There have been more swingarm extensions sold and used across america most with out failures than there have been arms sold and used cross america in 40 years.. They didn't just come to the market and will be around the market when swingarm builders are dead and gone.. Sorry PH, they not all crap, I don't recommend them as my first choice. It's a viable option for folks making a choice to spend their money on something. I would never sell a arm to a guy that has to ask..They may never like it, just want it for the weekend for track use or occasional i'm hip ride around poser weekend cruise, that's who needs extensions..There's lots of guys on here that have them and don't think they would risk their life on junk.. 
POWERHOUSE also deals with Terry McIntosh, have for almost 40 years. His arm that is equivalent to the Trac Dynamics arm is the same price. On the bolt-on extension issue - again, I would never do it. It is the cheap man's way out, and for the lousy $200 you are going to spend on them, you are taking your life in your hands. It has nothing to do with good extensions or proper installation. Sorry GC, they are crap IMO and I will NEVER put them on anything I ride or recommend them to a customer. I pay enough insurance and am not looking to lose my shop or endanger a customer. Do it right, or don't do it at all!
Opinions and preferences naturally come from one's own experiences, and on a Busa extension you are dealing here with a machined oval that has to fit as tightly as possible in a swingarm oval slot that very often varies in dimensions. A swingarm extension that has to be pressed into a tight slot will be better than loose fitting ones that only tighten up when you tighten up those two little bolts on that backing plate. That may be fine for posers and weekend warriors, and you may very well have found a pair that work better than most. Most of the bikes we build at POWERHOUSE are 300 horse and better - these are customers that generally do not tend to cheap out on their builds, and for them, bolt on extensions cannot be taken seriously. And when it comes to swingarms - guys like Kosman and McIntosh and companies like Trac Dynamics make some of the best stuff out there . . .
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