Cylinder Hone Flex-Hone Cylinder Ball-Hone 74-76mm For Honda TRX 300X 2009 Flex Hone Aazon.co: Frezon Big bore 74 267.5cc Cylinder Piston Top End... BRM 3 (76MM) Flex-Hone – Woodward Equipment Ball hone style features 320 grit globules of silicone carbide making it perfect for steel sleeved and Nikasil coated cylinders. Several sizes available for optimal cylinder bore fitment. Cylinder Hone for Honda CT90, CB100, CB125, CB175, CB200, CB350K, CB360, CB450, CB550K, CB750K motorcycles Cylinder Hone for Honda CT90, CB100, CB125, CB175, CB200, CB350K, CB360, CB450, CB550K, CB750K motorcycles.