Question about 2003 Suzuki RM 125

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I want my powerband to come in at a lower rpm. it comes in at 3/4 qt throttle! 96 rm 125

I have a 1996 rm 125 and you have to give it all you got to keep it in the powerband. is this normal and what can i do to bring the powerband in at a lower rpms?

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You can experiment with different expansion chambers. The cone shape of the chamber bounces a sonic shock wave back to the exhaust port. The wave forms a pressure "wall" at the port to "seal" the exhaust port so intake gasses don't escape. Change the wall timing and you change the powerband. This is the expensive way and with no guarantees. The bike may already have the best possible chamber.

I suggest you go a different route. Just go up about four teeth on the rear sprocket or down one tooth on the front sprocket. This will mean the bike will have a lower top speed but more torque and earlier powerband relative to mph speed. Bottom line is you will come out of the hole quicker with higher revs and reach the powerband sooner. The loss of top speed is overcome by the speed out of the corners. Generally, more time is spent in first, second and third than the brief moments spent in fifth or sixth.

Please consider a top rating for this solution. Thanks!

Posted on Jun 01, 2009

  • tombones Jun 11, 2009

    Could you take just a moment and rate my answer on your powerband question? I answer questions for free and really like the feedback. A "very helpful" rating would be great. Thanks!

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