The 750cc DROP-ON KITS have a bore diameter of 3.000 and will bolt on a unit construction Triumph without any machine work.They are as easy to install as a normal top end overhaul.
The REGULAR 800cc KITS have a 3.060 bore and a 3.200 spigot diameter. Your must bore your crank cases to 3.225 diameter to install.
Kits Include the following: New Cylinder, Head gasket,Pistons & Rings, Center Head Bolt ,Complete Instructions and Heavy Duty Advance Spring Set