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#588332 03/03/15 4:51 pm
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BigBars Offline OP
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Hi Folks I am confused by all the different rear shock lengths available.

Is 12.9" correct for a 67 tr6?

I am quite tall, if I go longer will it affect handling significantly as well as lifting the seat?



Last edited by BrettF; 03/03/15 9:45 pm.

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Bikes: '69 T120 on average (1967 rolling frame and 1971 Bonnie engine) + '56 1/2 T110 on average (58 rolling frame - with 55 iron head engine) + 74 T150 Home model.
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I think you could probably go with a longer set of Shocks - I have done it to try for more off road ground clearance.
Maybe an inch longer would be about as far as I would go.

You will need to be careful about making sure you set the drive chain adjustment loose enough. As the swing arm compresses the shock, the chain will get tighter at one point. Longer Shocks tend to amplify this effect - you do not want the chain to wind up with no slack - it gets tough on parts.

As for the effect on handling on pavement, it will affect weight bias a little. I don't think it would be much for normal riding, but I can't help you there.


66 TR6 MkIII Rickman
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Any amount of rear lift will steepen the fork angle making the steering more twitchy.
Go too far and you will get tank slappers over bumps and have to use a lot of steering damper.


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