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Twins Technical Talk Technical Talk for Hinckley Triumph Twins: Bonneville, T100, Speedmaster, America, Thruxton, and Scrambler.

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Old 09-01-2010, 10:16 PM   #1 (permalink)
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Handlebar Size Question

About 3 months after purchasing my 2010 Bonneville SE, I had a chance to sit on a 2010 Thrux. I really like the riding position with the Thrux handlebars (and rearsets, but that's a different issue all-together). Does anyone know if the 2010 Thrux bars are 7/8" like the SE? I can't seem to find the info anywhere. Assuming that I won't need risers, I thought it might make for a nice like for like swap and give me a more comfortable riding position. Thoughts?

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Old 09-02-2010, 04:00 AM   #2 (permalink)
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I believe the Thruxton bars changed to 1" when they dropped the clip ons for "normal" bars. You should be able to get some similar ones in 7/8" from one of the usual aftermarket sources. I have 1" LSL sport tourer bars on my T100 which are a little higher than the Thruxton bars, but a lot lower than the stock ones. It puts a bit more weight on your wrists when going slowly but you don't get that feeling of acting like a sail at high speed.
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Last edited by PAAS; 09-02-2010 at 04:04 AM.
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Old 09-02-2010, 03:54 PM   #3 (permalink)
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That is correct, the current Thruxton with handlebars has 1" bars. Norman Hyde makes a similar bar in 7/8" called "M" bars to fit earlier Thruxtons. To fit handlebars you will need to change your top yoke to one that will accept risers. Norman Hyde, LSL, Bellacorse, newthruxton.com, South Bay Triumph and others carry various top yoke conversion kits.

Edit - heck I just reread the original post - you have a Bonneville! The SE has 7/8 bars? I thought all bonnies were 1-inchers.

Last edited by beekay; 09-02-2010 at 03:56 PM. Reason: correction and addition
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Old 09-02-2010, 05:17 PM   #4 (permalink)
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Quote:
Originally Posted by beekay View Post
Edit - heck I just reread the original post - you have a Bonneville! The SE has 7/8 bars? I thought all bonnies were 1-inchers.
The newer Bonnies with mag wheels and the separate brake fluid reservoir have 7/8" bars (as does the Scrambler). The T100 (and now the Thrux) still has 1" bars. God knows why Triumph doesn't standardise on one or the other.
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Old 09-04-2010, 07:57 PM   #5 (permalink)
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Thanks PAAS. I'll look into an aftermarket set. Perhaps the 22mm Rizoma bars would work....

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Old 12-13-2012, 01:50 AM   #6 (permalink)
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Switching to Thruxton Bars

I was also looking into switching from my stock bars on my '11 bonneville base and went into my local triumph place and asked about the Thruxton bars. They were saying that there was going to be a couple of hours to do it with all the cable changes and such but I assumed that there was adequate cable that I could just take off the controls and the grips, unscrew the bars from the clamp and put the new ones on and screw the controls on the new bars and slip the grips back on as well. I feel like they're not being honest with me as it really doesn't seem like it should take more than 1/2 hour at most. Are the Thruxton bars really that difficult that it would take that long and if so, are there similar bars I can get that a direct transfer without recabline is possible. I'd like to find some Cafe bars that I can just switch the controls and grips with.

The video where I got this idea is
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Old 12-13-2012, 06:27 AM   #7 (permalink)
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As stated in the posts above, the issue(s) with fitting the 1" diameter bars used on the current Thruxton to your 2011 Bonneville that has 7/8" bars is the difference in diameter. I.e. the handlebar clamp, switchgear, throttle tube, grips, brake and clutch levers on your bike are designed to fit to a bar of 7/8" diameter and you are going to try and fit them to a 1" bar. That's the problem, not the cables. It's not impossible (not much is), but I'm not sure your dealer has thought it through and it would be much easier to fit another pair of 7/8" bars. There's a "sticky" post at the top of this sub-forum's home page with loads of info about the different bars available - http://www.triumphrat.net/twins-tech...ar-thread.html
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Old 12-13-2012, 11:30 AM   #8 (permalink)
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Everyone has provided you the sizing information you need... FWIW, I went through (5) pairs of bars before settling on Rizoma's with Rizoma risers and grips. I don't think the Rizoma's are going to give you the "Thruxton feeling" you are looking for. That being said, I love mine. If you truly want what the Thruxton offers without swapping out the risers, then the M-bars are for you. Hope this helps.
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Old 12-14-2012, 11:38 AM   #9 (permalink)
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Quote:
Originally Posted by Simon James View Post
I was also looking into switching from my stock bars on my '11 bonneville base and went into my local triumph place and asked about the Thruxton bars. They were saying that there was going to be a couple of hours to do it with all the cable changes and such but I assumed that there was adequate cable that I could just take off the controls and the grips, unscrew the bars from the clamp and put the new ones on and screw the controls on the new bars and slip the grips back on as well. I feel like they're not being honest with me as it really doesn't seem like it should take more than 1/2 hour at most. Are the Thruxton bars really that difficult that it would take that long and if so, are there similar bars I can get that a direct transfer without recabline is possible. I'd like to find some Cafe bars that I can just switch the controls and grips with.

The video where I got this idea is
http://m.youtube.com/watch?v=lcutlc7BBHE
The dealer is giving you BS - I'm pretty sure you will not need to change cables or the brake line going to Thruxton bars on your Bonnie - they are lower and narrower. It should be a very simple job.
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Old 12-14-2012, 07:35 PM   #10 (permalink)
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Quote:
Originally Posted by richm View Post
It should be a very simple job.
No it won't, because of the reasons given in my post two above yours.
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