Gas gas sm250

[Niall-griffiths]

Here is my sm250 was completely standard before I got it I have done the following

Genuine piston kit and all gaskets
full service including oil change,filler and level plugs, air filter, spark plug,coolant changed,brake and clutch fluid drained complete and a new slave cylinder piston and seals.
New black rims ajp hubs spokes Michelin pilot sport tyres
new genuine discs ebc pads front and rear
new apico pro bite footpegs
New apico gear lever
new black rear brake lever
new apico short clutch lever
acerbis hand gaurds
endurance 2 speedo
renthal grips
also new covers for master cylinders rear exhaust has new stainless rivets

 

[Niall-griffiths]

Another one

 

[Niall-griffiths]

And again !

 

[liv2day]

Nice Niall

She looks new!

Have you done anything to the forks to make 'em better for street riding? I'd guess they'd be way too soft.

I bet that thing's a wheelie monster, just roll the throttle back and the front goes airborne

Are you going to switch back and forth between street and dirt duty, or will she stay street?

Great looking bike.

 

[Niall-griffiths]

No mate I have done nothing to them there pretty good to be fair they have a huge amount of travel so seem to take bumps ect really well much better than friends yamaha wr mortards.

actually it doesn't wheelie on power at all unless your in first gear it puts the power down unbelivably well compared to a mates cr250 motard, i can rip the the throttle in second and it only hovers above the ground not come right up, perhaps im doing something wrong lol? current gearing 13-40 but will be going 14-40 it tops out at just over 90 with this gearing so 14-40 should give me nice cruising revs at 60mph odd.

she will only stay street as i dont have a enduro setup for her as this is the factory supermoto model. As winter is nearly fully here I'm thinking of getting a 300 cylinder(head mod,port and polish) fmf pipe and silencer along with the 2011 transformation kit just need to find out what kind of work would be involved.

with the silver rims

 

[liv2day]

she will only stay street as i dont have a enduro setup for her as this is the factory supermoto model.

Show's my lack of knowledge...had no idea GG made a SM bike from the factory - figured it was built using aftermarket bits

Keep us posted if you go with the 300 cylinder; bet she'd have no problem with the front going skyward with more oomph..lol. I should have thought about the gearing before making the wheelie comment; 13/40 is much taller than what I run on my 200 (12/50) - she wheelies like a fiend...lol.

 

[Niall-griffiths]

I will let you know I need to find out about rejetting new exhaust ect ect.yeah I think the suspension is actually set so soft when trying to wheelie the rear slowly just takes it all same with stoppies the forks are so soft they just slowly compress the whole way down lol,

 

[stian]

I will let you know I need to find out about rejetting new exhaust ect ect.yeah I think the suspension is actually set so soft when trying to wheelie the rear slowly just takes it all same with stoppies the forks are so soft they just slowly compress the whole way down lol,

What forks are you using?
Im using Mazorachis 45s, and with all set on max hardness, its way to soft, compared to a KTM 300 Sixdays Ive got.

Jetting, using the same carb as a 300? Friend of mine who has had a couple of 300s, said I should use 200-210 main-jet. 175-178 main is waay to low for streets.

 

[Niall-griffiths]

There the standard forks so I'm not Sure i would guess 45mm or 50mm marzocchi I will try adjusting them tomorrow if I get time and see if it makes a difference as I haven't adjusted it yet,I thought the 250 and 300 use the same carb?? If so I should be able to just rejett 200-210 on main? What pilot and clip position? Not sure what's in mine but just done a 120 mile trip of nearly all 60mph roads and it ran perfect at all speeds.