I have the extensions from Exoticycles...The ones Spencer sells are good as well.
Trac is a good arm.I was thinkn about doin a stretch this winter- wanted to go 6" over with a Trac Dynamics arm- whats the good word on Trac, NJ?
I was the originator of Bolt on Swingarm extensions. I have been making them since 1993. No one,and I repeat. No one makes a stronger bolt on swingarm extensions than I do.I'm running the ones from Exoticycle. From what I've heard they were one of the originators of extensions. The are great quality, aren't hollowed out, and cost a little more than most. Here's mine at 6" over.
So far I really like the ride and look. Haven't really had any problems with it, and my chicken strips less than an inch now.
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Yours appear to be very similar in shape to the ones I have. One thing I really like about the brand I have is the adjuster plate is designed so you don't need that really long adjustment bolt. You can just flip the plate around for shorter extensions. (than what I did). Mine also bolt from the inside through one plate instead of two. Another really nice feature of the Exoticycle.com extensions is that you don't need an extended rear brake bar, in fact you don't even need a brake bar!!Way back when. The swingarm used Boxed steel. I made Bolt on swingarm extensions since it was very very expensive to have them extended and welded. Here is a sample.
Your product definetly looks nice. I agree there are some out there bolting into the thin alumium backing plate which is not good. There aer some that also aren't solid aluminum too!Exoticycle makes a very nice Extension but here how mine differs. I can make adjuster plates for my extensions are you can use the stock one. Also my adjuster bolt is made of Stainless steel and it is over sized (see pics). the bottom bolt is the stock adjuster bolt.
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Most Extensions bolt directly into the aluminum and are held in with a Thin steel plate. If you torque it down too much you can strip the threads. Mine are held in with Stainless steel well nuts that I designed (and I do have a Patent). They spin and lock against each other. They can be torqued down to well over 100lbs. If you just happen to strip one of them just get another Stainless Steel Wellnut.
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