2003-2012 KTM SX 85 Piston Kit and Gasket set 

Mitaka top end kit to suit KTM 85 SX model years 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 consisting of:

Vertex Piston Kit Flat Top

Piston - Cast aluminium alloy, CNC machined, Teflon coating in high friction areas.
Rings - High quality OEM spec, high quality material and heat treatment, high quality coating for increased wear resistance.
Gudgeon Pin - Hollow, forged, steel alloy, chromed, high strength and hardness. Circlps included.

The piston that will be sent is a C size 46.96mm. For A, B, C, D, E, oversize 47.5mm and 48mm pistons check out our other items for this kit including a Mitaka piston.

Small End Bearing

Small end 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, you will receive the item listed)

All 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.