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I would not advise purchasing anything from Irby's out of Antioch, TN. I seen a servo motor for my '00 GPR on ebay and even talked with him several times about it. He promised on the phone and in emails he would gladly take it back if it did not work. I paid him $150 and sure enuff it was not...

Looking to change my pop-off pressure, where do i get new needle valves and springs?

Alright...I got my engine components back from Group K (hammer 1) and have been riding during some of the warmer days here in the midwest. WOW the power delivery is awesome and I don't believe I have the pipe fully tuned yet, and I have not bored my nozzle or changed the impeller, ride plate or...

Bought the V-force 3 kit and it came with (2) sets of stuffers, one has a # 120 the other has # 130. Anybody know which one to use for different set-ups? Thanks

Just got some refund money and bought the wet pipe and delta force cages/reeds for an '07 SXR, i plan on just removing the rubber grommets from the intake for now. I have a local guy who could mill the stock head, how much should he take off, is this even a good idea??? What about the flywheel...