Softest Apex clutch spring

[Frozenstiff]

I,ve got a 06 Apex and want to lower clutch engagement to Approx. 2500 rpm, and keep my top rpm around 10,500-10,800.
We do some aggresive trail riding and a bit of lake racing. I,m presently running the blu/pnk/blu spring, which is the softest one,listed on the yamaha spring chart, that gives me a 3800 rpm engagement.. My questions are, is this possible, any pros or cons, and will any other brand springs fit that will give me the lower engagement ? Suppliers and part numbers would be great.

 

[lochrtj]

Hey Apexrider,

I'm looking to reduce clutch engagement RPM on my Apex too. Have you tried the blu/pnk/blu spring yet? If so, how did you like it?

I was thinking of going yel/pnk/yel to lower engagement rpm, but keep the shift points the same, or as close to stock as possible.

 

[rxrider]

You can use the short springs from the late 90s clutches they had a different cover design. This way you will get it down to 2500 rpms, no problem.
I used P-P-P which had a 2800 rpms engagement and still held rpms pretty close up top.

rxrider

 

[Srxspec]

Yamaha Pink-Blue-Pink (20 intial rate, 119 finish rate) is a spring that was new for 2009. It will have roughly 1500 rpm lower engagement than stock and has the same finish rate as stock. Part number 90501-600A1-00.

 

[Frozenstiff]

Thanks for the info guys. I,ve since traded my 06 for a 07 Apex Rtx. Got a couple of good rides on it before spring came. Allen, will the Yamaha Pink-Blue-Pink work in the 07 as well ?

 

[Srxspec]

Yes the Pink-Blue-Pink would work in the 07 as well.

 

[RIYAMAHA]

Allen , what would the Pink-Blue-Pink spring do on a 2010 Vector ltx, Would it drop RPM engagement to low? Would like to drop the engagement some!

 

[RJH]

You can try tucking the weight under more with rollers...

On my 2 smoke...we made weight more agressive...at the start..thus tucking it under more. Had to go aftermarket to get that...

Make sure the belt is wide.

 

[Frozenstiff]

Thanks Allen, I,ll try that pink- blue -pink as soon as the snow flies, which will probably be late December for us here in Ontario, Canada.