Performance upgrades for 250s

[Snowcarver04]

Whats the cheapest / best value for money aftermarket upgrades to make your litte 250 four stroke go harder.Do aftermarket exhusts make much differance

[gamgee]

no don't waste your time (and money) just ride it, then when you get a nice bigger bike spend money on it... or spend money getting your 250 a proper service, carbs balanced, oil and filter etc etc.

[Jamezo]

CBRs are too highly tuned to screw with, but good results can be had with more straight-through pipes on GSXs.

Advise the above in your case.

[Brett]

Stickers, lots and lots of stickers. I have heard that those 'type r' stickers are good for at least an extra 10hp.

Seriously tho, dont bother with a 250 man, just save your dough and get a bigger bike when the time is right. I know a few blokes that have spent serious money on 250's - like 3kish, and they just become very very unreliable.

[SimJen]

No point tuning you won't get a huge increase.
If you are after big power, either whack a turbo on for about $3000-5000 and get 100hp!
Or get a 600+
If you must spend money, then get a better set of forks/rear shock and decent brakes instead of the sliding caliper type fitted standard.
A set of NSR forks would be perfect.....and possibly the shock could be made to fit too??

[hurricane_r]

re-jetting , de-restricting airbox, ram air, ncie tune, platnum plugs (or irridum's)
straight through can (with tune to match)

few things to add only sevral HP but require alot of work in some cases,

u got 3k?. i know a place that will turbo your bike but u need a turbo ordered from states for very small engines,

also u got more cash? NOS-> but have cash to back it when it goes... POP

and buy a jetpack and aim thrusters backward so it pushes you

see theres heaps man

[SuperDave]

The best tyres you can afford, that is the best 'upgrade' you will get for your 250. As far as mods though, I wouldn't even bother, if you want to spend money on it make sure that everything is up to spec, ie forks seals not leaking, carbs are tuned and spark gaps correct etc etc - the usual really.

[bobsmith]

Best tyres. And also make sure that your suspension is set up right.

I just had a play around with my preload on the rear and made a huge difference. I'm in the process of adding some spacers into the front shock and doing the oil as well. (well doing the bushings now too since I killed them... )

[hurricane_r]

na man jetpack, i swear that gives the most increase,

[Snowcarver04]

haha sure would. maybe I should steal one out of some military base. I thinik they worth 60mil

[limbimtimwim]

Carb jet and needle kit, new muffler, clear crap out of airbox, clean the carbs.

Don't know if anyone bothered to make a kit for the CBR250 carbs, there are ones for the CBR250RR however. Don't know if those go in the CBR250R either.

Also, do what you want, and have fun, don't listen to those 'don't waste your money' types, it's fun and you will learn things in the process.

[SimJen]

Also, do what you want, and have fun, don't listen to those 'don't waste your money' types, it's fun and you will learn things in the process.

Its not a case of "dont waste your money" but if you mess around to much without the knowledge/ability, then your finely tuned and well performing 250 will put out less power and be harder to ride.
Think boi racers with 1.6litre non-turbo cars and 3" exhaust systems losing around 20% of their power to no back pressure.......but it looks cool
Even if you could get a few mods for the motor, its not going to give more than an extra couple of horses. Which odds are you'll be unlikely to feel, as it will inevitably lead to a loss in bottom end torque.
Concentrate on riding better and getting the most from the bike.
Learning to ride the wheels off an underpowered bike will give you skills you will use all your life.

[lukelin250]

best mod you can do to a 250 is become a better rider. in the 250 riders there will be a big diff between fast and slow riders regardless of what there riding!!! practice practice buddy

[hurricane_r]

...agree...

[Mr. Peanut]

Go to the gym.