Looking for Final Drive Unit for Rocket 2005

Ishrub said:

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.

Click to expand...

Ishrub said:

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

Click to expand...

Ishrub said:

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

Click to expand...

Ishrub said:

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.

Click to expand...

Ishrub said:

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.

Click to expand...