I have a kx250 that i tried to fit for trail riding.
I put an 11 oz fww on it, i had owned several 250´s 2 stroke before and had never felt the need for a fww for trail riding so i didnt want to go that big.

Later on i discovered that the previous owner had modified the bike into a 285cc. Hence the reason why i felt the need toput in a fww in the 1st place.

Lately i have been riding in more technical terrains steeper harsher etc...

I have been struggling to gather traction on steep climbs with loose soil and no run ins to them... i asked the guys at sthealys if there would be enough diference between the 11oz and the 13oz fww to make it worth the expense.

They said there was but i thik it might be a sales pitch. Do you guys think it´s worth a try?
My fear is that I might end up with 2 fww for the bike and that the bigger one doesnt make much of a diference since there aint no market to sale them later on where i live.

thanks

Sounds like a job for a Rekluse

When I got my YZ250 I put on a Steahly 13OZ weight rode it a bit, and I thought it wass too much for me. Sent it back  to Steahly, they turned it down to an 11 OZ weight. I used that set-up for a couple years.

So to answer your question I thought there was a was a noticeable differnce between the 11 and 13 OZ weights.


SIngletrak

fww wont make you twist the throttle less,   I would look at a rekluse and run a gear high in those situations

Pornstar, on 23 May 2012 - 10:27 AM, said:

I have an 01 cr 250 that has a 13oz fww and steel plates to replace the aluminum clutch plates that came with the bike. That added some flywheel weight too. I like the way the bike works but I wanted a little more zap so I bought an 11oz flywheel weight(used ebay) to replace my 13oz. There is a difference but I just didn't change it over yet.  It's worth it to change it but here's maybe another way.. Maybe you could just buy a tusk clutch kit(that has all steel plates) for around $50-70 from rocky mountain to gain some flywheel weight and get an extra set of fiber clutch plates in the process. .. Just another way to get the same gain in flywheel weight.,, and maybe saving some money. I don't think that the kx comes with all steel plates. My cr came with something like 3 steel clutch plates and 5 aluminum ones. I figure it's probably similar for your bike but not sure. I'm kind of going the opposite direction as you are as I want more hit for fun. My cr has lots of grunt and maybe an over smoothed out feel... kind of like a bigger bore kdx feel. I'm looking for just a little more wildness..