big bore cylinder barrel kit yamaha yh50 yh 50 1999 2006 Honda CRF150 Honda ST 50 (1969-1970)

Honda ST 50 (1969-1970)

Aprilia Area 51 (1998-2003)

The top bearing sized ID25 x OD47 x WTH15 and bottom bearing sized ID30x OD55 x WTH17

Kawasaki VN 800 B1-B9 Vulcan Classic (1996-2003)

big bore cylinder barrel kit yamaha yh50 yh 50 1999 2006 Honda CRF150 Honda ST 50 (1969-1970)Brand new big bore cylinder barrel kit to fit: Yamaha YH 50 WHY (1999 2006). This cylinder kit is an upgrade on the original Yamaha YH50 for the years and models shown above. The top end will go from 50cc to 70cc. This kit includes: cylinder (barrel jug) cylinder head piston kit gaskets To replace OEM cylinder: TBC Minarelli Horizontal 2T A C (Air Cooled) Engine.