4-stroke air-cooled single-cylinder engine cylinder kit compatible with Yamaha DT175 (1978–2014) motorcycles. Standard bore 66mm, stroke 50mm, displacement 171cc. Compression ratio 6.1:1, piston pin diameter 15mm. OEM replacement: cylinder 2A7-11311-00, piston 3J1-11631-00-96, piston rings 2A7-11610-00, base gasket 18G-11351-00, head gasket 1W2-11181-00. Includes cylinder block, piston, ring set, pin, circlips, head gasket and base gasket. Premium aluminum cylinder with cast iron liner, forged aluminum piston for high-performance durability.
