310 PISTON KIT, where can I purchase?

[WEATHERBY460]

My 250r has a 310 big bore kit and I would like to take it apart and replace it, but am not sure where to get parts at. Can anyone help?

Thanks

[bronzeback5]

What year?

http://cgi.ebay.com/ebaymotors/250R-Honda-ATC250R-TRX250R-Big-Bore-Piston-Kit-310_W0QQitemZ250341776405QQcmdZViewItem

[WEATHERBY460]

THANKS ..its an 86.

whats a spacer plate they are talking about.