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Triumph T120 Big Bore Kit 10 Stud
convert your pre unit 650 cc to 750 cc 10-stud
you need with this cylinder a 750 cc 10-stud head
This cylinder is designed to fit your Pre Unit triumph crankcases
This cylinder is NOT designed to convert your 500 cc machine to 750 cc
This clyinder is NOT designed to be used on 650 or 750 Unit Triumphs - PRE UNIT ONLY
The OD of the liner is 80,2 mm
To fit 3/8” studs + 3/8 studs with spigot
The stud holes have 2 sizes for standard and spigot
Depth of liner in crankcase 29,6 mm
Cylinder base 16,2 mm
Total cylinder hight incl. liners 138,6 mm
Total hight less liner hight 109 mm
Cylinder bore 76 mm - STD
Pistons are 9.1 to 1