Sprint Forks Maintenance and Upgrade Oil, Seals, Bushings, Springs & Gold Valves - Page 2 - Triumph Forum: Triumph Rat Motorcycle Forums
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Maintenance Tips and Tricks for your Sprint Maintenance tips, tricks, performance suggestions and proven setups for the Sprints DO NOT POST YOUR QUESTIONS HERE!! Please post questions to the general forum.

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Old 02-06-2011, 01:26 AM   #11 (permalink)
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Thanks Champ for the job well done. I've got my forks apart right now for two reasons and another sprouted while I have them apart. I had them redone last winter and the Racetech seals leaked ever so slightly right from the beginning. I don't think there was an installation issue given the nature of the problem and I am going to try Triumph seals this time around. Don't know if they come from the same supplier or not, but didn't see a reason to go back with the Racetech's again. Secondly, the 0.90 spring was a little soft for me- I weigh 165 lbs but always have the luggage on and ride like I'm in a hurry. I decided that while I have the forks apart the expense isn't too great to go to the next spring rate up, the 0.95. I'll see if that gets me where I want to be. If it's too stiff I can always go back to the 0.90's.
Once apart, however, I noticed that both of the bushings have worn through the outer coating- or close to it, anyhow- and have more of those on the way as well. I'm leaving the valving alone, I've been very pleased with the high and low speed damping from the gold valves.

So after a little over 10,000 miles I had leaky seals, worn bushings and elected to go with stiffer springs. Hopefully that puts the forks the way I want them and I don't have to mess with them for another couple of years.
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Old 03-04-2011, 07:06 PM   #12 (permalink)
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Are you for hire?

Seriously, thanks much for the great write-up and advice. I have an '08 ST with only 5800 miles and have been considering suspension upgrades. Being of minimal mechanical competence, I would have the work done by someone who knows what he is doing. My local Triumph dealer has an excellent mechanic -- I'll run it by him.
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Old 03-12-2011, 09:49 PM   #13 (permalink)
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Riding Impressions

Quote:
Originally Posted by champ87 View Post
Riding Impressions

Unfortunately cold weather has got in the way of any objective assessment of how the bike performs with these upgrades. I will post my thoughts later once I've had a chance to properly evaluate the changes.
At last. After a long winter break I finally went for a ride to sample the new suspesnion setup. See this post for my comments.
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Old 04-01-2011, 12:33 AM   #14 (permalink)
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Champ,

Thanks for a wonderfully written, detailed guide on taking care of our forks.

When I do the service on mine soon, you can be certain that your great instructions will be with me every step of the way.

Thank you!

Terry
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Old 05-20-2011, 06:04 PM   #15 (permalink)
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thanks for all this info.
1 ? tho........
do you know where to get the lower fork bushing?
as you noted TRIUMPH does not list it in their parts diagrams.
can it be tracked down via the SPRINT fork # from maybe another MFG or something like that?
thanks
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Old 05-20-2011, 08:06 PM   #16 (permalink)
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I bought mine from Race Tech.

If you want to get some from a local dealer I think they may be the same as a Honda CBR600F4. I haven't checked them against each other so you'd need to take your old ones along to compare.
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Last edited by champ87; 05-20-2011 at 08:11 PM.
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Old 05-25-2011, 12:30 AM   #17 (permalink)
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upper & lower fork bushings, where to purchase: RACETECH, contact info and part #'s listed below
1999 2001 TRIUMPH Sprint ST & RS

SHOWA 43mm Diameter, conventional dampening rod fork.
Fork Oil (USF05=5w, OSFO 10=10w, US2=10w, US3=15w),
Recommended Oil Level, 140mm, US3 2 qt/liter required, $30 per qt.
Inner Fork Bushings (pair), FMBI 43151 P; $20 LOWER, Teflon on outside
Lower Bushing, Teflon on the outside, (smaller bushing)
dimensions: 14.8 mm (height); 43.5 mm (O.D); 41.7 mm (I.D.); 1 mm (thick),
Outer Fork Bushings (pair), FMBO 43152 P; $22 UPPER, Teflon on inside
Upper Bushing, Teflon on the inside, (larger bushing)
Fork Seals (pair) FSOS 43C P, $22
Dust Seals (pair) FSDS 43 P, $20
Additional:
Highly recommended:
Gold Valve Cartridge Emulator Kit (Damping Rod Type Forks)
RACE TECH part # FEGV S4301; $170
contact: RACETECH
http://www.race-tech.com/index.aspx
Domestic Sales and Technical Information: sales@racetech.com
Information: info@racetech.com
Phone: 951.279.6655
Extensions:
Sales - Michelle - ext. 122
Sales - Brad - ext. 111
Technical Support - Louie - ext. 109

1501 Pomona Road
Corona, CA 92880
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Old 11-16-2012, 10:44 PM   #18 (permalink)
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Further discussion can be found in the main forum here:

http://www.triumphrat.net/sprint-for...e-options.html

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Old 08-03-2014, 05:59 AM   #19 (permalink)
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Just bought some Hyperpro progressive fork springs (30 mm lower) as I am a shortie, and more importantly I want more feeling from the front. This write is outstanding
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