Routt Big Bore Kit for 650cc 9 Stud Models
Kit consists of Big Bore Barrel, 8.9:1 Cast pistons (Complete with rings, gudgeon pins, circlips) and a copper head gasket.
With tappet oil feed as per original barrels
Increases to 745cc (76mm)
Suitable for Triumph T120 Bonneville / TR6 Trophy 6T Thunderbird 1963-74 plus any other Pre Unit 650 when using a 9 stud head.
Great for Tritons and Cafe Racers
Barrels Made in England