Project Yamaha TTR230 Riding with New Forks - We installed the new forks, and now we try them out on a good desert ride. - Dirtbike at Off-Road.com
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Project Yamaha TTR230 Riding with New ForksWe installed the new forks, and now we try them out on a good desert ride.

Source: Dirtbike at Off-Road.com

We finally got a chance to sling a leg over the Yamaha TTR230 with the new generation YZF250 forks installed.  When sitting on the bike, you still sit level.  The longer front end doesn’t give the bike a “chopper” feel.  With a wide range of adjustments, the forks were pushed up a substantial amount in the triple clamps. 

dirt bike mod

The larger forks and triple clamps did not interfere with the steering in any way.  That’s right, there was plenty of clearance between the gas tank and the forks, even at full lock.  No modifications were needed.  The stock TTR230 fender bolted right on the YZF250 triple clamps;  the mounting holes were identical.  Tire clearance was fine;  nothing rubbed or got in the way.

When riding the bike, it felt much more stable.  Small ripples and undulations in the terrain were virtually ignored,  where the stock TTR230 front end wavered and shimmied over the same stuff.  Big plus.  In soft sand, the bike went straight and true, with no head shake or hunting. Another big plus. 

mods

The first real test of the front end was a section of small to mid-sized bumps on a fast straight section.  Here, the front end shined!  Power on, the bike literally sailed through the bumps.  Pure magic.

Later on, the bike hit some big dips and the forks sucked them up nicely.  We arrived to a rough section of the course and here the forks were harsh at the mid-stroke.  It was as though the springs were too stiff and the compression damping  was too much.  A stop and a looksee inspection showed that the forks were not traveling much more than half way through their stroke.  The dust on the fork tubes told the tale.

biking

Well, this calls for a trip to Keith Lynas’ place for a fork dial in.  Also, the left fork was weeping a bit, which indicated a seal needing replacement.  That’s the price you pay when you buy forks on ebay.  Still, seals are relatively cheap.

In the interim, we’ll get the rear suspension dialed in and see just how much the action at the rear affects the front suspension.  Many times in the past, once the rear end was working OK, the forks then felt fine.  Time will tell, as we investigate the suspension.

dirt race

 

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Comments and Questions from our Readers
 Posted 2008-01-10 17:20:20.0
I'm looking at my $30 e-bay 2003 YZF250 triple clamps and bars as I write this. Only got the clamps for now to sort out the mounting. Little risk and i'm confident I'll be able to source the other parts later. Like you I have the smartest man in the world, my dad, to help. I also plan to go a diifernt route than y'all. Will document and share results. Thanks for taking the leap first. It is encouraging when you know it's already been done. Now the trick is to do it better. I look forward to seeing how y'all sort out the mid stroke problem and your selection for pairing up the shock.
 Posted 2008-07-06 21:36:29.0
Hi I own the "06" model ttr-230 and I have it road worthy for NSW Australia I was wondering if the USD forks would still work on mine because I do a fair bit of off road riding and I'm finding the front standered forks are bottoming out over some of the roll overs when I'm landing on the flat or up hill. I really need a new opition because last time they bottomed out I almost broke my wrists Cheers GERZ
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