Progressive springs for front for of a 1989 Tengai - Kawasaki KLR 650 Forum
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post #1 of 2 Old 01-01-2018, 07:45 AM Thread Starter
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Question Progressive springs for front for of a 1989 Tengai

I want to upgrade the front suspension of a 1989 Tengai that i'm working on. The best upgrade that a lot of people do their KLR is installing some progressive springs. The issue is that the Tengai has thicker front forks, 41mm i believe. But i haven't found any springs that will fit that setup. So i was wondering if someone has some pointers or good ideas for me? I'll have to rebuild the front entirely since the oil bled out over a number of years. So i might just as well upgrade them!
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post #2 of 2 Old 01-02-2018, 01:14 AM
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Well, I'd say that there are lots of 41mm (I have information that says the Tengai forks are 38mm, but you have a bike in hand. We only got the Tengai for two years and not many of them at that.) forks around. Finding springs shouldn't be a problem.

Obviously, you would not want to put springs in the Tengai that are meant for a motocross bike with 14" of fork travel, but finding something that has a similar travel should work out OK.

The Gen 2 KLR has 41mm forks. Its travel is similar to the Tengai. Fork springs are preloaded with spacers; adjusting the spacer length should not be difficult.

I'd measure the fork tubes and find springs that are similar. I would hazard a guess that springs for a Gen 1 or a Gen 2 will work, depending on the diameter of the Tengai tubes. Even that might no matter much, as the springs are that close a fit to the inside of the fork tube...

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