Piston Kit, Valves and Gasket set to suit 2001-2007 Yamaha YZ250F
Piston Kit
Piston - Aluminium alloy, forged in Taiwan and CNC machined in Japan.
Rings - Riken, the same as manufacturers use on many Japanese and European OEM pistons.
Gudgeon Pin - Hollow, forged steel alloy, high strength and hardness. Circlips included.
The kit that will be sent out will include a B size piston kit (76.96mm - Standard Size) if you wish to change to an A size (76.95mm) or C size (76.97mm) please send a message when placing your order. B and C pistons are in stock A pistons may be delayed.
Top End Gasket Set
Gasket Set - Includes top & base gasket, valve stem oil seals, gasket for tensioner and any other o-rings etc.
Mitaka Steel Valve & Spring Kit (Inlet and Exhaust)
Mitaka steel intake valves x 3 (2 x 80mm, 1 x 78mm), exhaust valves x 2, matched intake
springs x 3, exhaust springs x 2, manufactured to the same specification as OEM using
high quality steel alloy and precision machining techniques with springs
specifically matched to the weight of the steel valves.
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 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 postage costs and a restocking fee upon exchange for the parts in original condition; However if we make a mistake we will cover postage costs and get the correct parts to you as quickly and smoothly as possible, or issue a full refund upon exchange for the parts in original condition.