DR 650 Stroker Kit?

5 replies to this topic
  • suzook1300

Posted January 15, 2012 - 05:04 PM


Hi everyone!!!! I have been a member of thumper talk for several months now but just bought a 2011 DR650 and I love it. I was seriously considering a 780 big bore kit with the big valve head and then I read some posts about a possible stroker kit. I hate to build a 780 and then the next week a stroker kit hit the market. Does anyone have any information on this supposed kit as to cc's or a possible release date? If it is going to be a year or so before this becomes available, then the 780 seems to be the choice for now. Thanks for any information that you may have.

  • el capitan

Posted January 16, 2012 - 10:20 AM


Hi suzook,

AFAIK the main problem with stroker kits will be the distance to gearwheels - you could only add 1 mm or similar and maybe gain a bit more by replacing the link on the rod itself. In addition, the entire character of the DR engine is already low-end and torque-based. I would welcome the idea of a stroker kit in case of a high-revving peak-power engine to add some power to the low and mid range. But the stock DR is already really good in these fields - so what should a stroker kit improve noticeably?

  • suzook1300

Posted January 16, 2012 - 05:20 PM


Several months ago I read a couple of posts that mentioned a possible upcoming stroker kit from Procycle in the 910cc range. But I have seen nothing since then to substantiate that. Just checking out all the options before I make a decision and drop 2500 on parts plus installation, only to go "damn, wish I would have waited." Thanks for the info El Capitan. I do not know that much about the DR engines yet, but it is a fun bike even in stock trim.

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  • ProCycle

Posted January 16, 2012 - 06:00 PM


I had Carillo make a custom (shorter) connectling rod and had CrankWorks build the stroker crank. The completed stroker crank is sitting safely in a box until I get the time and motivation (and an extra bike) to get the motor built. It's a 10mm stroke. Will only work with the big bore piston. I haven't got a clue what I'll do with the clutch. I know the stock clutch won't be up to the job.

This was never intended to be a kit and I still have no plans to take it in that direction. Just a one time experiment in motor building and just something interesting to have.

Edited by ProCycle, January 16, 2012 - 06:01 PM.

  • qwerty1234

Posted January 16, 2012 - 07:30 PM


maybe it's just me, or maybe i'm a genius, but I thought the entire point of a stroker kit would be so that we can finally have a 1001cc DR engine.
Do you have any idea how many women that would pull? for gods sake let's get this thing done!

Edited by qwerty1234, January 16, 2012 - 07:30 PM.

  • suzook1300

Posted January 17, 2012 - 06:25 AM


Thanks for the reply Jeff. Thats me Qwerty, would be kinda neat to have a DR1000 and would definitely make people take a second look. Didnt know if it was even possible to stroke it enough to do that without cutting the case. I am sure the cluth would take a beating, andf the transmission may not even hold together with that much power. I bet even a well built 780 will strain a stock clutch.


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