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the crank for the stroker is like 3 grand, and from what i heard triumph mixed and matched the bearings in there so unless you have a good machine shop of you yourself know what your doing i would have someone who knows about this do the install. bill at bp will do a complete rebuild for 500 bucks. just need to get the motor down to him




the crank for the stroker is between 1400 and 1600 USD depending on who you get it from. I don't know that triumph mixed and matched bearings so much as there are a range of bearing clearances that are available. Accurate measuring and bearing selection would be important especially after a crank shaft has been reworked.
The addition of the carrillo rods drives up the cost of the stroker. Bill Gately told me that the stock rod are okay for the stroker as long as you do not go over the 10.5:1 or add flat slides and a higher rev limit. I would add the carillos anyway.
If you do most of the work your self, you should be able to have a 989 for about $2K. a bit less if you already have a 904 and don't need the cylinder work.
I put plenty of reasearch into this before deciding to do just the 904 at this time.


05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter