BEST logo ebay Mitaka Fastuff Top End Full Engine Rebuild Kit.jpg


1998-2013 Husqvarna WR250 / 1999-2009 Husqvarna CR250 Piston Kit and Gasket set

Please note 1998 is a changeover year so please ensure this is the correct kit before purchasing

Mitaka top end kit consisting of:

Mitaka Piston Kit

Piston - Aluminium alloy, CNC machined, some pistons come with teflon coating in high friction areas.
Rings - Are the best available! Always TP or Riken, the same manufacturers used on many Japanese and European OEM pistons.
Gudgeon Pin - Hollow, forged, steel alloy, chromed, high strength and hardness.

This listing is for a B size piston kit (66.35mm - Standard Size)  if you wish to change to an A size (66.34mm) C size (66.36mm) oversize 67.50mm or 68.00mm please send a message when placing your order. 

KOYO Small End Bearing

KOYO small end bearing, made in Japan. Roller bearing with heavy duty roller cage designed for high RPM and durability.

Mitaka Gasket Set

Head gasket or O-rings, Base gasket, Exhaust valve gaskets, Exhaust pipe O-rings & various O-rings if required. All gaskets and rings that are needed for a piston change are included.

(item may vary from picture)

Mitaka components are engineered to OEM specifications or higher using the same manufacturing techniques and high quality materials.



For the majority of 2 and 4 stroke motocross bikes since the late 80's to present Best MX Shop offers - Piston kits, Connecting rod kits, Complete cranks, Main bearings, Gasket sets, Seal sets, Titanium valves, Steel valve and spring kits, 4 stroke cylinder kits, Clutch disc kits, Clutch baskets, Clutch centres, and Clutch pressure plates. If the item you require is not listed please get in contact as listings are constantly being added.

This item is usually in stock and shipped within one working day from Queensland, Australia.

Free Post Australia Wide

Please ensure you know the correct year and model of bike before you order. If you are unsure of your model and year please contact your local dealer with the frame number. If your local dealer is unable to help please send the frame numbers and pictures and we will attempt to find the details. If you order the wrong parts you will have to pay a restocking fee, however if we make a mistake we will be happy to get the correct parts to you as soon as possible or issue a full refund and cover postage costs.