What’s better than a fresh standard bore cylinder? One at this price! UK made standard size new cylinder specifically for unit 650 Triumph twins from 1965-72 including Tiger, Trophy, Thunderbird, Bonneville, TR6, TR6C, 6T, T120, T120TT, T120C, T120R, etc. Can also be used on Triumph Pre-unit twins when installing a 9-stud top end and on early unit 650 twins (1963 and 1964) as long as you use a non-oiler exhaust tappet guide block and seal off the oil gallery.
The cylinder may have surface blemishes from the casting mold, but performance is not impacted (see photos for illustration example).
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Want more power? Check out our Big Bore Kit! CLICK HERE