[cinders]

Hi There,

Can anyone help? We've just had the engine apart and we need to do a slight re-bore - new pistons are required.

I have two options.

1.) Remove around .03mm and hope it's enough to remove the score marks, I can then use the standard oem pistons and they will be within tolerance.

2.) Remove .25mm and go with over-size pistons, but I don't know where to get them from.

I saw these on e-bay, but not sure if Chinese parts can be trusted?

Piston & Piston rings For HONDA KAZ CBR250 MC22 4 Sets STD Size | eBay

Can anyone help?

Cheers,
Cinders.

 

[CammyGTIR]

Hah! Ask Humbug....

 

[Sean zxr 250]

Hi There,

Can anyone help? We've just had the engine apart and we need to do a slight re-bore - new pistons are required.

I have two options.

1.) Remove around .03mm and hope it's enough to remove the score marks, I can then use the standard oem pistons and they will be within tolerance.

2.) Remove .25mm and go with over-size pistons, but I don't know where to get them from.

I saw these on e-bay, but not sure if Chinese parts can be trusted?

Piston & Piston rings For HONDA KAZ CBR250 MC22 4 Sets STD Size | eBay

Can anyone help?

Cheers,
Cinders.

zxr 250 A pistons are 49mm

 

[Dannoxyz]

thanks Sean!
Do you know following for ZXR-250 A pistons?

• pin dismeter
• compression-height
• dome volume

Would be great if we can find alternate pistons.