Author Topic: R9/R9i motor  (Read 2406 times)


  • Guest
R9/R9i motor
« on: August 17, 2012, 09:47:56 PM »
From the information I have been able to find/acquire, the R9 has a modified GY6 engine.
A lot of mods/accessories will work, but things like a Big Bore Kit might have some issues.

Granted, this is what I've been told.
I wasn't planning on a BBK, but I would like to do some "reasonable" tweaks to get some better performance.


  • Guest
Re: R9/R9i motor
« Reply #1 on: August 23, 2012, 11:57:56 AM »
I've heard the same about compatibility. I haven't heard about any issues with big bore kits though. Can you be more specific? Personally, my R9 has excellent stock performance. I pretty easily push 60 mph. I couldn't ask much more from a scooter...

The Professor

  • Guest
Re: R9/R9i motor
« Reply #2 on: August 28, 2012, 11:17:32 PM »
I would be interested in finding out the answer to this as well since I removed the engine from my R9 and installed it in my Honda Ruckus. Although it is fast already, I would always enjoy going faster :)


  • Guest
Re: R9/R9i motor
« Reply #3 on: December 02, 2012, 11:03:51 PM »
Does anyone know the exact model of the engine?  Usually three numbers and three letters?  60MPH is poor performance for a 150cc'er.   My Buddy 150 could do 65 even in strong head winds, and much stronger acceleration.  I'm thinking of putting in a big bore kit.