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How To: Tuning a Scooter CVT after Big Bore

2 Comments

How To: Tuning a Scooter CVT after Big Bore

Why it’s important to dial in your cvt. We get calls DAILY from people running the wrong cvt parts. Your cvt tuning is the bulk of the battle. If your trans isnt tuned right your giving up major power, and acceleration/top speed. Give us a call if your bike is boggy, and your in need of guidance! Be VERY careful when taking advice from online sellers that dont have a physical service shop. Do it once, do it right and be happy :)





2 Responses

Donnie Leffingwell
Donnie Leffingwell

October 03, 2020

hi man, I am actually having cvt trouble lol I recently added the 100cc bore kit and exhaust pipe. And got a upgraded cvt but I can’t seem to get it right. I mixed 3 8gm weights with 3 4gm weights on stock variator with 1000gm clutch spring and 1000gm contour spring for the clutch it seemed to weelie easier and quick start. I then changed variator with added 6.5gm weights and lost a little bit of tourque it still weelies just a bit different. Top speed seemed slower as well. I have the 2000gm springs and contour spring but haven’t tried it. What should I do? Do I need to go lighter and put the 2000gm springs on?
This video broke down whats whats but is there a system on what to look for with the cvt swap out with springs? Like a chart on what fits? Or something like that.
What should I use for 100cc bore 64mm head and exhaust?

james  collins
james collins

October 03, 2020

i got a 06 yamati strada 2 stroke 70 cc airsal bbk 19mm mikuni carb came from the factory with a pipe want to do a cvt tuning kit but witch one to go with so many kits Dont know witch one to go with? .seen your video on cvt tuning .this scooter same as a keeway or vento .where do u start? i know once started back wheel dont engage until 3000 rpms .bike crusies at 45 50 trying to get a little more top speed and quicker take off ? any ideals?

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