This Wiseco Piston Kit is for Husqvarna CR/WR 125 years 1997-2006.  Comes with Ring Set, Pin, and Clips. The stock Bore x Stroke is 54mm x 54.5mm.  The only Bore size available for Husky CR/WR 125s is the stock 54mm bore.

Don't forget to purchase the Complete Top End Gasket Kit with the Top End Bearing to finish your rebuild properly.

*Note: Top End Gasket Kit is ONLY for years 2000-03