Daytona 955 rear shock on TBS? - Triumph Forum: Triumph Rat Motorcycle Forums
Hinckley Classic Triples 885cc Classic Styled T3's: Legend, Thunderbird, Thunderbird Sport & Adventurer.

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post #1 of 7 (permalink) Old 05-31-2019, 06:23 PM Thread Starter
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Daytona 955 rear shock on TBS?

Hello, I've read several of the posts regarding early zx6-9 rear shock swaps but also came across a very affordable 955 daytona shock. Seems like the spring would be better equipped to handle the tbs.. Uncertain about fitment, details are 04 daytona 955

Part number: T20507

Fits:
Triumph Daytona 955i: 97-06

Length (eye to eye): 15.25" / 387mm
Stroke approx: 2" / 51mm
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post #2 of 7 (permalink) Old 05-31-2019, 07:21 PM
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Hi! Just an fyi.... this week I installed a Hagon mono-shock with hydraulic pre-load adjustment on my '04 TBS. I am very happy with the bikes performance. Working with Hagon was a breeze. You do have a success path with Hagon if the Daytona shock does not work out.
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post #3 of 7 (permalink) Old 05-31-2019, 07:50 PM
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Originally Posted by VividPrimitive View Post
Length (eye to eye): 15.25" / 387mm
The ones on our bikes are about 13 1/2" eye to eye. Also, just looking at the photo, it looks like the bottom fork might be too wide. If you want, I can get you the correct measurement.

John
Laconia Bike Week 2019 - See you all next year
2007 HD FXDL
1999 Legend TT
1975 T150V, 1968 BSA Thunderbolt, x2004 Thunderbird Sport
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post #4 of 7 (permalink) Old 05-31-2019, 09:50 PM Thread Starter
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Quote:
Originally Posted by VividPrimitive View Post
Length (eye to eye): 15.25" / 387mm
The ones on our bikes are about 13 1/2" eye to eye. Also, just looking at the photo, it looks like the bottom fork might be too wide. If you want, I can get you the correct measurement.
That would be much appreciated, going to see about all those kawi shocks or potential others at the wreckers this week before springing for a new YSS
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post #5 of 7 (permalink) Old 06-01-2019, 09:41 PM
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OK, this afternoon I wrote a long response. I needed on bit of information to finish, but got distracted. When I came back, finished the post, and submitted it, I got a "token expired, go back and refresh the page". This, of course, means the whole response was lost. So:

I measured the shock off the Legend. Top mount is 1.180 wide. Bottom fork inside dimension is 1.210" wide. Fully extended was 13.25" center to center. Next I measured one of the mid '90's ZX9 shocks I have and it was 1.175" on the top and 1.290" on the bottom. It's not fully assembled so I couldn't get an accurate length, but I recall it's about 13.7".

Anyhow. I got a hold of a ZX9-ZX9R shock from 1994-'97. It has a separate reservoir like the TBS shock. The top bushing is the right ID for the Triumph bolt, as is the lower fork. They're easy to find, easy to install, and reasonably priced. The only problem is they're all pretty long in the tooth and need to be rebuilt. Find one with a good shaft as excess wear here will make it hard to seal. Rebuild parts are easy to find and member Rollinslow84 wrote up a good how-to procedure in this thread.

I am rebuilding mine with a RaceTech valve set up for a 170 lb rider on a Triumph TBS, and a spring from a TBS (supplied by Rollingslow84). If I ever finish, I'll post a ride report... TBS Spring is 12.3 kg/mm. The Kawa spring is 8.6 for '94-'96 and 10 for '97 so they're a little on the soft side. RaceTech recommends 11.6 for me.

Oh, just one more thing... There are a lot of shocks out there that take a smaller (10mm) top bolt. This can be corrected by replacing the top bushing with Kawasaki part number 92160-1161 (again, IIRC - this is for a 12mm bolt). The bottom fork is easy to drill out larger.
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John
Laconia Bike Week 2019 - See you all next year
2007 HD FXDL
1999 Legend TT
1975 T150V, 1968 BSA Thunderbolt, x2004 Thunderbird Sport

Last edited by WSC; 06-01-2019 at 11:10 PM.
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post #6 of 7 (permalink) Old 06-02-2019, 10:29 AM Thread Starter
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Much obliged, very helpful!
The height spec is same for legend and tbs?
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post #7 of 7 (permalink) Old 06-02-2019, 02:07 PM
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Quote:
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The height spec is same for legend and tbs?
Not sure what you mean. The rear frame is different, so the seat height is different, but the suspension travel is the same. It's been a while, but I'm thinking the shock length for both is within 1/4" at most.

John
Laconia Bike Week 2019 - See you all next year
2007 HD FXDL
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1975 T150V, 1968 BSA Thunderbolt, x2004 Thunderbird Sport
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