As someone previous said, The spindel has a step, this forms the right spacer. This speedo drive is the other spacer on the other side.. It can't really go together wrong. The right spacer is not a fixed postion.. In the ohlins forks, the wheel sat approximately 1.5mm > 2mm to left in both calipers. (Today) I removed a bit of material from the speedo drive and it's all pucker now. I now have close to identical spaces in all calipers on both sides of the disc/s. Pistons are extended by the same amount on the pads all round.. Need to put it back together, and see if fires up... and get the suspension set up. The (new) batttery is on charge.
The 748 and 998R had a 5mm machining in the fork bottom where the calliper mounts to allow for the deeper offset discs, so unless you have 748/998R forks you don't need the deeper discs
Bolds it seems the 748R, 996R, 998R and the 998FE all have 15mm offsets? I recall another thread on here states there maybe an exception for the 996SPS if that had ohlins. I know one forum member (here) has this conversion in the same bike, the type of ohlins on my bike with these calipers. and runs 15mm offset discs... I have also read on a different Ducati forum (lots of posts about this). A 996R owner stating, he has seen at least one 996R with 10mm offset discs / ohlins forks?? I guess a measurement/compare the thickness of the caliper bracket would help (assuming it is not just offset) I will do that. My thoughts now are the forks genuine? I understand the fork bottom is -5mm either side (for 15mm offset on the R) so each caliper sits 5mm further out from the centre of the wheel. I just can't see why mine do not? Mine are now centered with 10mm offset discs, however the same setup worked with the Showas... I'm a little concerned (now) my forks are not the real deal. They looked almost if not brand new and cost silly money. Not the type of money you'd expect to get sold crap for.... The online seller Ductai parts shows thousands of transactions with 100% feedback and the forks look 100%. The FG8851 prefix part no and all images look spot on... (not sure about the rest of the number) Part no. FG8851 2003.10.25 < does this mean made in 2003 (so not from a 996sps then?) I recall they were advertised as 998 FE or R's Just a bit ocd and like to have all the info. Like things to be right, work right and prevent issues before they occurr where possible. I can't find out for sure if the FE had 10 or 15mm offsets only the part no's for the discs as posted via a different forum suggest they have the same discs as the 996R... 996R 492.4.026.1A 998 & Matrix 492.4.038.1A 998S FE 492.4.026.1A All a bit Strange from the info I have. I certainly don't set out to pay top money for parts and end up with an inferior product. Depending on what it is, I like things to be right. Call it OCD but most the kit I've worked on has had the intended result, some just for looking tidy or working properly or sounding nice etc...depending on the intended use. I guess is some respects I should be happy, I've not had to buy new discs. Just want to know what I've got in my bike now.
Give Craig a ring at Moto Rapido (01962 873981) he is very knowledgeable about the 748/9*6/998 family. Andy
Theyre were some moody fork bottoms machined in uk to look like ohlins in the late 90's early 00's. I only heard about them, never saw any. Pre radial probably.
When I put showa usd front end on my 907(from rwu marzocci M1R) I used a real mix n match which I thought would all line up. Multistrada 2v legs, late 3 spoke wheel, SS yokes(top bored to 53mm), original discs, 65mm calipers. When I assembled it I was 1.5mm out. The only difference was multi legs dont have speedo drive just spacer so maybe the leg bottoms could vary between digi speedo and drive type?
They were advertised as: DUCATI OHLINS FRONT FORK TUBES LEGS FO8851 748 916 996 998 ( 111954748644 ) I can't open the full advert to get proper description which is annoying. I don't think they are dodgy just all seems very odd, as per title... They came from the Netherlands via these guys. ducatiparts-online (5817) 100% positive Feedback We are the biggest online Ducati Parts dealer in the world when it comes to new and used Ducati parts online.... We ship worldwide with UPS. Shipping to the common European countries takes 1-2 days, overseas shipping 2-3 days All our new parts are OEM original Ducati . Our used parts are cleaned / inspected prior to listing for sale. I've since bought other bits from them (my new air filters etc which I was not sure would fit and they said they would) and they did no problems. The site and feedback all looks good. Very good communication and shipping etc.. I read a post somewhere, that new (as in not OEM) Ducati road ohlins did suit 10mm offset... These should be OEM though. The internet can be great and not so. I had hoped to bang the number in the forks and get what model they fit. I paid near new fork money for these and they looked new. I have no reason to think they are fake, especially from this seller / price. It's just very odd as per title all the bikes with these fork have 15mm offset discs and if my front wheel was wider the showa forks would not work with the 10mm offset discs... There has to be an explanation. I will get to the bottom of this! Thanks
Just spoke to Craig@ Moto R good professional guy. Looking through the paperwork, they had a lot to do with my bike previous owner. He says they are likely genuine, that looks like a ohlins part no. The problem is that is not a part number Ducati work from, Ducati have their own reference numbers so could not tell me what bike they came from... The Ducati reference number (not marked on the forks) would only be on the box from new. He said if they were aftermarket (new) they would not look like standard Ducati forks. There is a chance they have come from another European sports bike. So maybe someone clever has used them up to give the 998 the same disc offsets (assuming they were removed from a Ducati as advertised) they might be Aprilla. If I could see the details of the advert description and it states they are OEM - rather than fit a Ducati I might have an argument if I wanted one. However I could if I really wanted, assuming there is 5mm more meat on the bottom of these forks have it removed and fit 15mm off set discs... I will keep the 10 mm offset discs because they seem easier to come by...
They could just possibly be from an Aprilia as some Aprilia forks are very similar to Ducati forks and will fit with only a small amount of work. My son had a set altered to put on his race bike, they were only the stanchions though, but there is no reason the rest could not be fitted.
I think they are genuine Ducati (or same as) looking at this advert google found on here... Image 3 down clearly shows the ohlins part number. (prefix is same as mine) "http://ducatiforum.co.uk/threads/ohlins-996-sps-forks-fg8851.26852/ Genuine Ducati Ohlins Forks. Believed to originally come off an sps or 998 fe. Very very rare as you can run these forks with standard 10mm offset disks. Very good used condition, just a few small marks on the tubes from cable rubs. 56mm bottom yoke, standard top yoke." Feeling a little bit more happy with my purchase... So the Ohlins forks what ever they are, are the same version used at least and may be OEM stock Parts. I regret not asking Craig the offset on the discs of a 998 FE now... A previous advert for discs on here Exige questioned the disc part no as it was listed as 10mm but it was 15mm when measured and fitted??? Ducatis don't seem like the easiest bikes to get sound data on. The last part of the number, Craig said might be date of manufacture as I did wonder... I've google my ohlins part no and drawn a blank. Would be good if it threw up say 3 or 5 bikes they were fitted as OEM. I've tried to find my forks via ebay in the sold items, to get the accurate description as they were bought too long ago in my purchased items April 2016. Maybe someone with more skill could find the full advert.
I did some research into this when fitting mine as the 1198 Ohlins do have 15mm offset but as I was using a 916 wheel I needed to source 15mm offset discs with the correct 6 bolt hole pattern (1198 wheels have 5 bolt holes). My research told me that some 748R and all 998R had 15mm offset but that all other Ohlins forked 748, 916, 996 & 998 had 10mm offset (this is regarding road bikes, race bikes maybe different with wide tracks etc.), of course my research could be flawed and Ducati may well have veered from the plan on odd bikes but this is what I found. The 15mm offset started as standard from 999 onwards and all these have the later 5 bolt hole pattern making it 'fun' finding suitable discs for some hybrids.
998R and 748R discs 49240371A and are 15mm offset the 996R had the same type of discs as the 748/998R but in 10mm offset
Intresting Bolds. Its been interesting looking into it. Always learn lots this way and by doing these things, gain the experience to discuss specifics. It seems the discs part no's don't always indicate a correct offset judging by parts sales on here. Infact it seems some Aprilla discs may be the same too. I am starting to suspect these are FE forks. I'd like to prove the brake offset for FE is 10mm not 15mm. I suspect the Ohlins number on the fork includes a date, in my case 03/04 so it's 998.. A current ebay advert : OEM Ducati Ohlins FG8851 Front Forks for 748-998 Superbikes. These were OEM on the 996R / 998R - Ducati Ohlins Horquilla Delantera Set FG8851 748 916 996 998 748R 996s 996R 996SPS 998R | eBay Obviously used part traders get it wrong but that FG8851 pops up lots as a ohlins OEM ducati fork. I think this was the actual advert for my forks: Ducati Ohlins Front Fork Tubes Legs FO8851 748 916 996 998 | eBay Electronics, Cars, Fashion, Collectibles, Coupons and More | eBay › ... › Motorcycle Parts › Brakes & Suspension › Fork Tubes OHLINS FRONT FORK LEGS FG8851 IN PERFECT CONDITION - ABSOLUTE DAMAGE FREE FROM A 998 FINAL EDITION WILL FIT ANY 748 916 996 998.. I bought my bottom yoke - final edition from the same seller. The only way I will ever know for sure if someone with a 998FE checks the part no and more importantly measures the caliper bracket thickness. I know a member on here (bettes) owns a similar set up but his fork bottoms caliper mount measure 15mm, the ohlins part no looks to be FG8500 < an OEM set of forks... some advertised on here. http://ducatiforum.co.uk/threads/ohlins-748-996-998r-forks-fg8500.26673/ Mine as FG8851 < an OEM set Ducat iforks... some advertised on here http://ducatiforum.co.uk/threads/ohlins-996-sps-forks-fg8851.26852/ I assume mine look to be manfactured 2003/2004. If the year of manufacture is next to the ohlins part code/ref on the fork foot (see photos) So they are not 996 forks. Eitherway I'm happy, my fork foot caliper mount is 20mm - explains my 10mm discs. The part no. looks like genuine OEM. If I want 15mm offset disc I can mill the caliper brackets, but I am quite happy running 10mm discs in keeping with the 998s and can swap back to showa if needed, perhaps find discs easier. Happy days... Thanks again everyone for input.
In summary then (finally) 996R 492.4.026.1A 998S FE 492.4.026.1A So if the 996R were 10mm offset and these part nos via the other forum are correct the 998S FE has 10mm offset discs... so 20mm caliper mount brackets but it stand to reason, the ohlins part no on my forks would be the same as the 996R but the FE built later so later date on forks.. Will be interested to ride it again, get it set up for my weight... so much more appealing than the Honda.
You'll notice a massive difference when you next ride it. Even before the suspension setup it'll be a lot better than before. Then after the suspension setup, you'll be proper chuffed!
There sps forks..10mm offset discs, 748/996r/998r were 15mm offset and had a little more machined off the bottom caliper mount. Ive had both sets of forks over the years both sets with the same fg number
I'm not convinced that is true TOM. I have been told by several people the forks are date stamped? My forks are too new if that is true at 2003 to be 996. This is quoted several places on line too: "Available from Ohlins, just look at the FGxxx number stamped on the fork bottom. You should see the FG number and a manufacture date." I quite believe the forks are only different by the fork foots. Ohlins probably make similar forks to fit several bikes, or at least the main parts of the forks, those with different spindle sizes etc will get a different ohlins code. So I suspect those with an FG8500 number give a 15mm offset and those with FG8851 give a 10mm offset (on a Ducati with a certain wheel size etc) for simple parts identification supply reasoning. I would think any FG8851 forks with 5mm less on the bottom of the forks leg have been machined, aftermarket. Obviously If I had an FE to measure I could soon tell? I'd be 100% convinced then but only if I knew it was a Genuine FE and the owner had it from new... I looked at your adverts I think (hence links above) if you look at the FG (ohlins part no.) they read FG 8851 2001.10. 24 on yours as an example.. I know there are R forks that are FG8500 2001. I've aready found the old email I sent to seller who is Ducati specialist they were advertised as FE forks. I bought them with an FE yoke from them too. I think the yoke has a part no that checks out as FE. I also spoke to Moto Rapido, who said Ohlins may well mark the forks with date of manufacture... My forks read FG8851 2003.10.25 I've not personally spoke to a 998FE owner to measure the fork bottoms or disc offsets but others on here have stated.. The 998R and 748R have 15mm offsets... yet there have been owners of 996R who have seen 996R with 10mm discs obviously some people swap parts etc so it's difficult to get a sense from owners if the parts were original or not.. I'm about to ring a ducati dealer so I will get some part no's for discs to see if the FE match the 996R and perhaps the SPS. I guess it only takes Ducati to have a difference supplier Brembo one year and different one a year later and you could have different part no's and same offsets so with out a genuine stock bike it could get a bit messy... I am going with the manufacture date theory at the moment as it seems most people I speak to agree on this. Eitherway they are OEM genuine ohlins and they are 10mm offset so that bit is defo
From the horse's mouth today... Ducati dealer today parts department. " I can not tell you part no's but I can tell you.... the 2004 998FE, the 2001 996R, the 2002 998s disc are the same part no." So 10mm offsets on these model then. I have also contacted Ohlins direct in Sweden today to make sure, ref. my google search having spoke to Moto Rapido "ohins forks may well be date stamped" that Aprilla, Honda, Triumph owners are not wrong about quoting that the date is stamped after the FG code... I trust I bought genuine items 100% as advertised.
