Help needed with Monster axle sourcing - - The Ultimate Ducati Forum
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post #1 of 7 (permalink) Old Jul 15th, 2019, 7:54 pm Thread Starter
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Help needed with Monster axle sourcing

Hey y'all, I have spent countless hours calling dealers, scouring the net and cross-referencing parts for my 06 S2R1000, just to find the right front axle. I've come up with 81910171C, but finding a clean used one has been a hassle.
Does anyone know definitively that any of the 81910171 axles, be it A, B, C or D are the same dimensionally and will be interchangeable? I assume as time passed, Ducati made minor changes to the part - material thickness, material composition, coatings, etc - which although doesn't require a completely new part number to differentiate it from the others, needed to have some form of separate ID. Any insights from someone who has had them side by side, or verified fitment would be appreciated as I can get a used D version for $30, but a ratty C version is double that, and a new one is close to $200CAD. Thx all.
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post #2 of 7 (permalink) Old Jul 15th, 2019, 8:04 pm
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Perhaps this can help your search, that part number is used on all of these models as well. The breakers WoundedDuc and Gotham often have bikes being torn down that are not listed on their website, worth sending an email to them.

81910171C Ducati Fr.wheel Shaft M1000S - S4R/05. Front Wheel Spindle. - 2WheelPros

*and the ebay listings I saw for $40 USD will clean up nice in less than 15 minutes,... they just have to be straight because anything else will clean off easily. Spend four hours and you could polish it to near chrome if you wanted.

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Last edited by RockAZ; Jul 15th, 2019 at 8:10 pm.
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post #3 of 7 (permalink) Old Jul 15th, 2019, 8:27 pm Thread Starter
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Thanks for that. I've found it, and these other sites invaluable for researching the parts I need, but none verify that more than one, or indeed, all the 4 iterations will fit the bike. Cross matching the lists comes up inconclusive.
To further complicate things, 81910171D now supercedes to 81910781AA
81910781AA which doesn't apply to the Monster at all. Puzzling.....

I would likely have kittens if I found ANY 1 bike on any 2 lists. At least then I'd know they were interchangeable for sure. However, my bike shows up on A and C, but if I could verify that 2 bikes or more used the same forks and wheel, and the triple alignment was identical, I can't see a reason why any of these wouldn't work. Shy of buying a few used ones..... There must be proof positive that they will all cross ref.

What I found is thus:

2005 Ducati Monster Dark 2 Dis S4R
2005 Ducati Monster Dark S4R
2005 Ducati Monster Standard S4R
2006 Ducati Monster 1000 S2R
2006 Ducati Monster 1000 S4R
2006 Ducati Monster Dark S4R
2006 Ducati Monster Standard S4R
2006 Ducati SportTouring ABS ST3
2006 Ducati SportTouring ABS ST3S
2006 Ducati SuperSport DS 1000

Ducati Monster 1000 2005
Ducati Monster 1000 Standard 2005
Ducati Monster 620 Dark 2005, 2006
Ducati Monster 620 DARK2DIS 2005
Ducati Monster 620 Standard 2005, 2006
Ducati Monster 695 2007, 2008
Ducati Monster 695 Standard 2007
Ducati Monster 696 2009, 2010
Ducati Monster 696 Standard 2009, 2010
Ducati Monster 800 S2R 2007
Ducati Monster S2R 800 2007
Ducati Monster S2R Dark 2005, 2006
Ducati Monster S2R Standard 2005, 2006
Ducati Multistrada 620 Dark 2006
Ducati Multistrada 620 Standard 2006
Ducati SuperSport 1000 DS2005
Ducati SuperSport 1000 Standard 2005

Ducati Monster 1000 S2R 06, 07, 08
Ducati Monster S4R 2005, 2006
Ducati Monster S4R Standard 2005, 2006
Ducati SportTouring ST3 2006, 2007
Ducati SportTouring ST3S ABS 2006 2007
Ducati ST3 Standard Standard 2006, 2007
Ducati SuperSport 1000 DS 2006
Ducati SuperSport 1000 Standard 2006
Ducati MH900E Standard 2001, 2002
Ducati MH900E Standard Standard 2001, 2002
Ducati Monster 1000 2004
Ducati Monster 1000 S 2003
Ducati Monster 1000 Standard 2004
Ducati Monster 620 2004
Ducati Monster 620 IE 2002
Ducati Monster 620 S 2002, 2003
Ducati Monster 620 SIE 2002
Ducati Monster 620 Standard 2002, 2003, 2004
Ducati Monster 750 2001
Ducati Monster 750 IE 2002
Ducati Monster 750 Standard 2001, 2002
Ducati Monster 800 2004
Ducati Monster 800 S 2003
Ducati Monster 800 Standard 2004
Ducati Monster 900 I.E 2001
Ducati Monster 900 IE 2002
Ducati Monster 900 S 2001
Ducati Monster 900 Standard 2002
Ducati Monster S4 2001, 2002
Ducati Monster S4 Standard 2001, 2002
Ducati Monster S4R 2003, 2004
Ducati Monster S4R Standard 2003, 2004
Ducati SportTouring ST2 2001, 2003
Ducati SportTouring ST3 2005
Ducati SportTouring ST4 2001, 2002, 2003
Ducati SportTouring ST4S 2002
Ducati SportTouring ST4S ABS 2003, 2004, 2005
Ducati SportTouring ST4S Standard 2003, 2005
Ducati ST2 Standard Standard 2001, 2003
Ducati ST3 Standard Standard 2005
Ducati ST4 Standard Standard 2001, 2002, 2003
Ducati ST4S Standard Standard 2002, 2003, 2004, 2005
Ducati Superbike 748 R 2002
Ducati Superbike 748 S 2002
Ducati Superbike 748 Standard 2002
Ducati Superbike 996 BIPOSTO 2001
Ducati Superbike 996 S 2001
Ducati Superbike 996 Standard 2001
Ducati Superbike 998 2003
Ducati Superbike 998 S BAYLISS 2002
Ducati Superbike 998 S BOSTROM 2002
Ducati Superbike 998 SBAYLISS 2002
Ducati Superbike 998 SBOSTROM 2002
Ducati Superbike 998 Standard 2002, 2003
Ducati SuperSport 1000 2004
Ducati SuperSport 1000 DS 2003
Ducati SuperSport 1000 SS 2003
Ducati SuperSport 1000 Standard 2004
Ducati SuperSport 620 S 2003
Ducati SuperSport 620 Sport 2003
Ducati SuperSport 750 Sport 2001, 2002
Ducati SuperSport 750 Standard 2001, 2002
Ducati SuperSport 800 2004
Ducati SuperSport 800 S 2003
Ducati SuperSport 800 Sport 2003
Ducati SuperSport 800 SS 2003
Ducati SuperSport 800 Standard 2003, 2004
Ducati SuperSport 900 2001
Ducati SuperSport 900 Sport 2002
Ducati SuperSport 900 Standard 2001, 2002
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post #4 of 7 (permalink) Old Jul 16th, 2019, 10:57 am
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It doesn't matter, they're all the same part number.

The letter on the end just typifies something inconsequential, like a paint code or a coating or manufacturer.

Honda and Ducati both do the same thing.

Look at all the different Monsters on those lists...the front axle stayed the same for Y-e-a-r-s. For all those different displacement bikes.

Just because yours got left off of one of the the lists, is nothing wrapped around the axle about.
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post #5 of 7 (permalink) Old Jul 18th, 2019, 8:09 am Thread Starter
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That was my assumption as well, just couldn't get it verified by any dealer or anyone else for that matter. Didn't make sense that the axle would be different enough to not be compatible, without changing the actual number, or it would cause a shit load of confusion. More so than it has for me already. I'd really feel more confident if someone piped up and said, yes, I used a D when my bike was spec'd for a C, but if you're 100% they are all the same, I'll pull the trigger on one today.
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post #6 of 7 (permalink) Old Jul 18th, 2019, 11:27 pm
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I prefer my axles plain with no sauce.. little bit of salt maybe.

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post #7 of 7 (permalink) Old Jul 20th, 2019, 7:59 am Thread Starter
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I think I have solved this mystery at last. Although the axles bear the same number, the alpha digit does make a difference. The A and C shafts have holes drilled through to allow insertion of a screwdriver into the lower fork for making adjustments. The B and D are dimensionally identical, but are blank, used on bikes that don't have that adjustability, like these bikes possibly?

Monster 1000 2005
Monster 620 2005, 2006
Monster 695 2007, 2008
Monster 696 2009, 2010
Monster 800 S2R 2007
Monster S2R 800 2007
Monster S2R Standard 2005, 2006
Multistrada 620 Standard 2006
SuperSport 1000 Standard 2005

Anyone have thoughts on this?
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