Triumph Thunderbird Big Bore Kit

• Soup up your Thunderbird to a full 1700cc of raw power with this big bore kit from Triumph Genuine Parts
• The full kit includes everything to get the job done including new pistons, rings, gaskets, camshaft, seals, cylinder liners, bolts, etc. even a new oil filter and sump gasket!
• Includes a new chrome embellisher cover to show that this Thunderbird now has 1700cc's
• We recommend having the installation done by a qualified Triumph service center as a new tuning map will need to be downloaded after installation