300 detune

[jb_dallas]

I have a 2011 GasGas 300 six days and just bought a 2013 KTM 300XC. I still love the bike,but resale isn't great for GG,so I've decided to keep it. It's really a great bike. My issue is that I have friends with different riding ability. One friend has plenty of experience and can handle the power fine....he is just broke and had to sell his bike. My other friends probably belong on a beginner bike, like a XR or DR. What can I do to tame the power besides a fww? I thought about jetting it a bit rich...but I'm not sure that would be effective enough.

Thanks

[djroggen]

Fww. Seriously. Get the big s3 weight. You will be pleasantly surprised. Don't jet it rich.

[andoman]

Raise the stock gearing. It will tame things by spreading the powerband and slowing down the rev rate.

Slightly richer jetting is very helpful, but don't jet it rich for richness sake. Search around the jetting forum and go with a needle that gives a smooth delivery in the mid-range and a smooth transition on to the main.

If you really want to make it rideable like an XR or DR then figure out how to put a simple throttle stop on it. A spacer on the top of the slide to limit how far it would come up would do the job.
I can't imagine an easier bike to ride than a 300cc 2t with a limited top end and smooth power band.

[Stoby]

I'd keep any kind of beginner off a 300 2t. Not really the advice your looking for but you don't want your friend f'ed up. I don't think you could make the bike safe enough fww jetting pwrvalve its still a big torquey 2t thatll throw you on your head. Plenty of experienced guys think a 300 is a handful

[Bandit9]

Originally Posted by Stoby

I'd keep any kind of beginner off a 300 2t. Not really the advice your looking for but you don't want your friend f'ed up. I don't think you could make the bike safe enough fww jetting pwrvalve its still a big torquey 2t thatll throw you on your head. Plenty of experienced guys think a 300 is a handful

Roger that. I even made a comment to my buddies today after we came out of a tight section. I said, "you know a 250 is probably perfect". The Gas Gas 300 motor is a lot of motor, even for me at 6'1 233lbs and tons of experience.

[Jakobi]

Originally Posted by andoman

Raise the stock gearing. It will tame things by spreading the powerband and slowing down the rev rate.

Slightly richer jetting is very helpful, but don't jet it rich for richness sake. Search around the jetting forum and go with a needle that gives a smooth delivery in the mid-range and a smooth transition on to the main.

If you really want to make it rideable like an XR or DR then figure out how to put a simple throttle stop on it. A spacer on the top of the slide to limit how far it would come up would do the job.
I can't imagine an easier bike to ride than a 300cc 2t with a limited top end and smooth power band.

+2

This would be my first port of call. Taller gearing will really spread things out, but may make take a little more clutch work in the slow and steady. A flywheel weight will help counter this and also take some bite out of it.

Restricting the throttle would really dull it down I imagine and limit the damage when taking an unexpected handful of throttle.

As far as people riding it, I guess thats up to you and them to evaluate their abilities and confidence. I wouldn't put someone green onto one, but as long as the rider has the basic skills they shouldn't have an issue. Trying to ride a 300 like a 125 is when you really notice how much of a handful they can be.

[pscook]

G2 throttle tube. Mild to wild with the swap of a cam.

[nambo-trev]

Originally Posted by pscook

G2 throttle tube. Mild to wild with the swap of a cam.

This is the best and easiest mod to take off something on a 300. You can make it as tame or wild as you like in a few minutes.

[Caravan Monster]

An extra spacer in front of the reed valve block will slow it right down. Easy to handle modern bike much more confidence inspiring for a beginner than a heavyweight '80's air cooler. Worked on a dr350 recently; surprised when I was reminded how heavy they were!

[nokturnal]

What about a different needle too? The CCK needle really took the edge off of my JD-blue needled bike.