Looking for Final Drive Unit for Rocket 2005

Ishrub · Jun 15, 2021

vindex1963 said:
Mine is a 2006 black engine VIN 268096 so it's an early black engine, where does it fit for the updated parts?

As far as I know ALL black engines have the updates to trans etc. There may be later minor changes to the Roadsters and it is essential to use reliable parts interpretation and model matching.
Some US dealers parts compatibility programs are flawed and group all R3 model years together and I often have to refer and cross check a few different ones around the world that may provide additional fitment notes cover particular parts and provide multiple part number options/application from the parts diagrams.

I find an Aussie Triumph dealer listing system the best and I have not found similar elsewhere.
But even it needs checking or further clarification from alternate sources.

E.g. click on parts image part #12 for details and links to 3 options (click each again for details) with all detailed further in the accompanying parts listings.
Clicking on the number in image or listed parts will also color highlight the part # in image.

1K9 · Jun 16, 2021

markur said:
I'm noticing that there aren't hardly any available. Seems like the consensus from mechanics that have worked on them, that Triumph never wanted parts within the Final Drive to be replaced, independent of the whole unit, which is pretty ridiculous. Alas, some have had some success. Do you have pictures of yours, and is it from a 2005 regular Rocket, not Touring?

Mark

Make sure that your problem is a bad final drive and send me a PM so we can converse. The drive is from a 2007 Classic. I can search the garage and take pics if you are interested.

Ishrub · Jun 16, 2021

There is one going on eBay in Australia (not mine) for Au$695 (US$500) but they weigh about 15kg packed from memory so would be Au$192.70 (US$140) postage.

TRIUMPH ROCKET 3 2006 06 07 08 09 10 2010 FINAL DRIVE DIFFERENTIAL GEAR - USED | eBay

Find many great new & used options and get the best deals for TRIUMPH ROCKET 3 2006 06 07 08 09 10 2010 FINAL DRIVE DIFFERENTIAL GEAR - USED at the best online prices at eBay! Free shipping for many products!

www.ebay.com

Micksan · Jun 16, 2021

markur said:
Does anyone know of a good resource? I looked on eBay and not seeing any for my year, although I understand that mine would be compatible with up to 2007. After that, it's a different unit.
I'm not completely sure yet that it isn't Universal Joint that may be affected. There is grinding in the first and second gear that sounds like it's coming from back near the Final Drive unit, but could be before in the gearbox. I've heard if I drain the oil from the Final Drive unit and see a lot of metallic then it's likely the Final Drive unit that needs to be replaced, but any further input would be very welcome.

Thanks so much

Mark in Napa, California

I have one out of a 2014 R3T. Has 3200 miles on it. Just converted bike to Trike. I would check with the factory tech rep. On the Older BMWs we would swap the final drives around. Gear ratio was set up for type of riding . It you wanted a sidecar , then you went for the lower side to give more torque. For the Voom-Voom folks you would get the higher side. I believe you will find that the R3 will be go along the same way. The touring model has more torque ( still lots of speed ,just takes a little longer to get there. , where as the Roadster is more for top end speed.
If you think it will work Message , call ot text. 405 202 0968. I can live with $200 plus shipping.
One more point. I am leaving on a bike trip Sunday to Great Falls MT, expect to be back the 30th.

1K9 · Jun 16, 2021

Ishrub said:
There is one going on eBay in Australia (not mine) for Au$695 (US$500) but they weigh about 15kg packed from memory so would be Au$192.70 (US$140) postage.

TRIUMPH ROCKET 3 2006 06 07 08 09 10 2010 FINAL DRIVE DIFFERENTIAL GEAR - USED | eBay

Find many great new & used options and get the best deals for TRIUMPH ROCKET 3 2006 06 07 08 09 10 2010 FINAL DRIVE DIFFERENTIAL GEAR - USED at the best online prices at eBay! Free shipping for many products!

www.ebay.com

The splines are worn off. It is worthless.

markur · Jun 16, 2021

1K9 said:
The splines are worn off. It is worthless.

what's a good way to tell if the splines are worn? Do you have a picture of a good spline, vs a bad one?

Tripps · Jun 16, 2021

I think @warp9.9 might, someone has posted them before

1K9 · Jun 16, 2021

markur said:
what's a good way to tell if the splines are worn? Do you have a picture of a good spline, vs a bad one? The splines that go to the output shaft have a slight step. This is wear. The splines on the rim side are perfect. Look at the splines on the used one Ishrub posted. Those are almost gone.

Mine

Used Ausie one

Ishrub · Jun 16, 2021

1K9 said:
The splines that go to the output shaft have a slight step.
This is wear. The splines on the rim side are perfect.
Mine
Mine

1K9 said:
Look at the splines on the used one Ishrub posted. Those are almost gone.
Used Ausie one

Are we all looking at the same thing?
Yep @1K9 , yours is worn with that step, your original prop shaft must be similarly worn too or worse.
In my discussions with @Mittzy it seems the prop shaft male teeth tend to wear more quickly than the receiving diff on used examples he has seen.

That Aussie one on eBay

The 'Rim side' of diff look similar.
The one on Aussie eBay

Your one 1K9

Ishrub · Jun 16, 2021

Micksan said:
I have one out of a 2014 R3T. Has 3200 miles on it. Just converted bike to Trike. I would check with the factory tech rep. On the Older BMWs we would swap the final drives around. Gear ratio was set up for type of riding . It you wanted a sidecar , then you went for the lower side to give more torque. For the Voom-Voom folks you would get the higher side. I believe you will find that the R3 will be go along the same way. The touring model has more torque ( still lots of speed ,just takes a little longer to get there. , where as the Roadster is more for top end speed.
If you think it will work Message , call ot text. 405 202 0968. I can live with $200 plus shipping.
One more point. I am leaving on a bike trip Sunday to Great Falls MT, expect to be back the 30th.

That is a great offer and price!
Unfortunately for @markur the Black Roadster diffs from ABS versions 2010 onwards will not fit earlier Rocket IIIs.
The earlier silver R3 diff does not fit later ABS versions and vice versa.
The old Boxer BMW diff swaps for gearing changes option does not exist for Rockets as there is ONLY one fitment for each series and I do not believe the final gearing changed but may be wrong.

I do have a low BMW R65 diff on my R100RS chair but probably not required for a Rocket as I doubt a chair worries the Rocket's torque output.

Looking for Final Drive Unit for Rocket 2005

Ishrub

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1K9

No'mo Rocket 4 me

Ishrub

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TRIUMPH ROCKET 3 2006 06 07 08 09 10 2010 FINAL DRIVE DIFFERENTIAL GEAR - USED | eBay

Micksan

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TRIUMPH ROCKET 3 2006 06 07 08 09 10 2010 FINAL DRIVE DIFFERENTIAL GEAR - USED | eBay

markur

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Ishrub

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