1990 Kawasaki KX125 Full Engine Rebuild Kit

Mitaka Piston Kit

Piston - Aluminium alloy, CNC machined.

Rings - Heat treated and coated for excellent durability.

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 55.95mm. If you wish to change to a C size 55.96mm please contact for availability. Other sizes may be available from Wiseco, Vertex or Wossner for an extra cost, please ask for further details.

Mitaka Gasket Set

Head seals, Base gasket, Exhaust pipe seal, Reed valve gasket, Power valve cover gasket, Clutch cover gasket, Side case gasket, Crankcase halves gasket, Water pump gasket, Ignition cover gasket & various o-rings if required.

Mitaka Seal Set

Includes all seals required, Main bearings, Countershaft, Clutch rod lever, Gear shift shaft, Water pump, etc

Mitaka Conrod Kit

OE specification and materials. Includes chromed connecting pin, big end roller bearing with flat silver bearing cages designed for high speeds, forged shot peened steel alloy connecting rod, copper or silver thrust washers designed for high oil flow. This kit is not a complete crank, it uses your crank halves. 

Best MX Shop offers crank press, install rod kit and true crank for $150 including return postage. Please contact for more info.

OEM Spec Main Bearings

The bearings used are Koyo high quality Japanese bearings of the same specifications as OEM.


(Item may vary from picture, you will receive the item list)

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.