Triumphrat

pb3000

Hello,

I have searched quite a bit with no definitive answer to my question. My question is, what is the piston bore on a stock Triumph Thruxton carbie and/or EFI?

Thank you for your help!

-PB

plodalong

My carb one has an 11 cast on the side of it. Educated guess would put it as a 11mm bore.

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07 thrux,breathe,Dna airfilter,airbox X restrictor,135 mains,1 shim,tp +3 ignitor,yss emulators,hp springs, Bitubo shocks,pingle steering damper,D9 layflat,3" rise clipons,corbin seat, tt350 taillight,alloy indicators.shorai battery,Changes daily

PAAS

Yes, they are 11mm bore for both carbed and EFI Thruxtons. In fact all Thruxtons, Bonnevilles, T100s and Scramblers use the same piston and seal spares kit (part # T2020087) whether they have the one-piece cast m/cyl and reservoir or the separate reservoir "pee pot". I.e. they're all 11mm.

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Paul.

Herts. UK
Aubergine & White 05 T100 (865cc) with numerous mods.
(Previously Ducati Monster S4 and several UJMs)