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Hey, so I am wanting to put some quality bar end mirrors on my bike. Are the bar ends hollow like normal ones or do they have the threaded part inside like the Duke 390?? I am looking at the CRG Lanesplitters and they can be had with thier own adapters for internal fitment on the end of the...

Hey all, I want to change my fork springs and fork oil on my bike. I'd pay someone locally to do it, but they are all either scared to do it, or I don't actually think they know how and are just going to wing it. I don't want to pay someone to wing it, thanks. I just need a step by step so I...

I ask because the stock filter appears large enough to flow more than enough power for our engines. I've seen similar sized filters for car engines. Even a little Kia engine is going to make at least double what ours can make even fully modded. Anyone have good back to back dyno evidence of...

so I was torquing all the bolts on the bike after a longer ride. I got all of it torqued and then I saw the little brass nut on the side stand. Tried to torque it, and I broke it off. Sad panda. I saved it. I figured it was a stop for the stand to not go up to far. Tried it, and it worked...

very occasionally, I'll get this to come up on my dash for just a few seconds and then it goes back off again in a few more seconds. Like once or twice in a month or so. Its annoying and I don't want to get a real problem some day. I don't see any corrosion etc, or rubbed wires. No codes in...

Saw some video on a Duke recently and the cluster looks way cooler than ours. I wonder how close to plug and play the swap would be? Tach looks readable is the biggest thing I like, but just overall it looks more impressive

ok, before you flame on, I know this isn't a fancy car, but a simple bike. Hear me out. The mirrors are only ok, and the actual rear view is almost non existant. Today I put in a rear view camera on a customers car. it was cheap so its always on. IE, not just in reverse. The monitor was...

Hey, thinking about putting a slightly smaller rear sprocket on at one time. I know Formula390 knows this stuff inside and out. Iknow there will be slightly less acceleration, slightly greater fuel economy, and slightly less revs at the same speed. What are the quantitative measurements on...