Heavy duty main crank bearings
**DUE TO CONSTANT BACK ORDERS FROM MANUFACTURERS CAUSED BY COVID WE STOCK THE SAME 400EX PARTS FROM DIFFERENT COMPANIES SO THAT WHEN
72mm purpose built big bore cylinder head
Wiseco 86mm forged piston
Feedback: Positivereviews and feedback are greatly appreciated
Kawasaki KX250F KX 250F 83mm 290 cc Athena Big Bore Cylinder Top End Kit '11-12 Honda Heavy duty main crank bearingsP400250100018,11004 0079,11004 073811004 0079,11004 0738,11005 0586,11061 0357,120CA0625,13001 0714,13001 0730,13008 0028,13002 0030 Unlock Power with the Athena 83mm 290cc Big Bore Top End Cylinder Piston Rebuild Kit for 2011 2012 Kawasaki KX250F Revitalize your ride with the Athena 83mm 290cc Big Bore Top End Cylinder Piston Rebuild Kit, designed specifically for the 2011 2012 Kawasaki KX250F. Elevate your motorcycle's performance like never before