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58mm 144cc Nikasil Athena Big Bore Cylinder
wide powerband
this kit provides the reliability and durability you need when you're running a 98mm or 99mm cylinder
whether you're racing or tackling tough trails
8mm stroke (449cc) CPK Piston Kit
04-06 CRF250R CRF 250R Complete Bottom End Crankcase Bearing Kit Bearings + Seal Scrambler 850 58mm 144cc Nikasil Athena Big04 06 CRF250R CRF250X Crank Bearings Seals Rebuild Kit Most Complete Complete Engine Refresh: Restore Reliability & Smoothness to Your CRF250! Give your 2004 2006 Honda CRF250R or CRF250X the complete refresh it deserves with this NEW IMPROVED KIT WITH ALL NEEDLE AND ROLLER BEARINGS! This is the most comprehensive rebuild kit you will find online, guaranteed to restore your engine's reliability and precision. Don't let worn out bearings and seals