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Here are the best ways to increase the performance of the Vstar 650.

We at the VSTAR Custom, Classic, & Dragstar  forum and Website do not guarantee the success of the  following mods. They can be done if you take your time and follow the instructions. The use of factory  repair manuals and after market  repair manuals may be beneficial, have useful information, and relevant information.

Rev limiter points 1st 30-32 mph, 2nd 50-52 mph , 3rd 70-72mph, 4th 90mph this is a good indication that the bike is jetted correctly.

Download the service manual.
Yamaha V-Star 650 Service Manual  Note: This is a 15 meg PDF file.