i have just been offered a s3 star head [outer half the blue bit lol] i have 300 sherco and if im rite this is coming off a 125 sherco will it fit or is he just trying to get my money lol any help will be good

yep that will fit as long as you have the inner bit aswell

going to buy hi comp insert for it and new o rings,copper washers for the top just so i know its all tight. do you no if it standed oring or if they have to been s3 one,i have just heard alot about water leaks from them, thank for that info

not sure on that one-sorry

someone on here will no!

that 300 sherco whith hi comp head must be like a scoulded cat:)

I know they use the std O-rings on a GG. Would assume they would on the Sherco too.

you do have to hold on when you drop the clutch lol love it

Hi Mate, If your head has studs and nuts it will need o rings as water escapes up the threads, past and through the nut centres.

If you have bolts you just need m6 copper washers. You could remove the studs if you have them and replace them with bolts.

The S3 heads are good at keeping the bike cool, worked a treat on my gasser with the high comp insert. They can be a pain to seal properly.

It will make your bike sharper off the bottom with more torque.

Thinking about getting one for mine for the cooling advantage and it looks cool but I will have to find a red one.

My head is already high comp but I need more bling.