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Rear Shock Sag on Vintage Bike.

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I am a Vintage class enduro rider currently piloting a modified 1984 Honda XL200R.  I had the original Showa shock refitted, revalved and resprung by John Hlebo suspension.   I run the original front forks outfitted with Race Tech emulators  and Progressive springs.   The bike is now much more stable and predictable.  However, I still need help with "balancing" the front and rear suspension with an emphasis on the rear shock race sag.  The TT universe offers plenty of Race Sag info on newer bikes with 10+ inches of shaft travel, but what about the older iron with perhaps only 7+ inches of rear travel?  In my case, I have only about 190mm total travel, so what should my rear race sag be for best performance?

Any thoughts or advice would be greatly appreciated.

Thanks for looking, Scott.


Old School: No disk brakes, no computers and no damn radiators...

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Recommended sag for off road by Dwight Rudder, who was a factory sponsored ISDE competitor, as a percentage of suspension travel:

                                FRONT                        REAR

Dwight Static      14%           14%           11%         11%

Dwight Rider      25%           25%           33%         34%

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I agree with Chuck and Dwight.  In the front we have experimented with 22%-25% while leaving rear at 33%.

For more stability at high speeds 22% is a bit better, which is what we found with CRF230.

If your front is knifing in go to 22%.  If your front is washing out go to 25%.

The difference with short-travel forks is small but that little bit can help.

Edited by VortecCPI

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