Newbie on the forum so be nice please. i am looking to obtain information on the differences between the two models in the thread title. I have a 998 Biposto. The side fairing says 998 but the handbook says 998s. Looking for quick way to confirm. Thanks
Deep sump 136 bhp motor in the S, shallow sump 123bhp in the base model, none of them had the Ducati Performance sticker on the lower fairing. If you really want to know what and when, email Ducati with frame and engine numbers.
Mate, still a cracking bike bike. Congrats. Another difference is the front brake calipers. The S has the 4 pad ones. Also a carbon belly pan.
Judging by the photo you have a 998, the base model. The 998S had a 5 piece faring with a bellypan as far as bodywork was concerned. Not all 998S' had 4 pad calipers (P4/34) and some of that was for what market it was being sold in. The rest is internal and Ducati used to sell a kit which consisted of cams and an exhaust system to upgrade the 998 to S specification. The exhausts are also 50mm on a 998S and 45mm on a base 998. The deep sump aspect has already been mentioned and was in fact a carry over from the 996R but the motor does not have Titanium conrods. The Ohlins rear shock was standard on the 998 and it had Showa TIN forks, exactly the same as the 998S but the 998S did have an Ohlins steering damper. Mirrors were also unpainted on the 998
For anyone interested the Ducati Part Number was 96427202B for the 998S conversion and consisted of the four cams, 45\50mm link pipe and exhaust cans in Carbon, a new carbon heatshield and the correct ECU. Currently priced at 2959.92 Euros! Or with the full exhaust system it was 96426902B,price is stated as the same according to this website GONIOMETRE 04110061A - Genuine Ducati spare parts They also quote a Titanium system with a 45\50mm link pipe as also the same price.
A few non standard bits on these pictures, but that's a 2002 998(S) Ducati 998 described as.. The 998R and non US 998S models had different crankcases? with a deep oil sump The standard 998 had crankcases which were very similar to the previous Desmoquattro? The non US 998S as well as the 998R had revised cam profiles which provided more power than the standard 998. The 998R model used a 104.0 mm × 58.8 mm (4.09 in × 2.31 in) mm bore and stroke which actually displaced 999 cc, and was very similar to the engine used in the subsequent 999R model. Ducati 998 In 2001, Ducati introduced the 996R (see Ducati 996) with the 998 cc Testastretta engine. This bike was the true introduction of the Testastretta engine and the 998 model. The engine was similar to the 2002 non US 998S. Only 500 were sold which was all that were needed to homologate the bike to race in the World Superbike Championship. This bike won the World Superbike Championship in 2001 with rider Troy Bayliss. Michael Rutter won the Macau Grand Prix in 2002 and 2003. As some one already said (previously recommended to me via this forum) I did check my bike the model via the chassis no. on their data base, it could even tell if it sold as a bip or Mono. Although mine does not have a mono sub frame so is obvious. If you ring a helpful Ducati main dealer parts department they might croass check part no's and models : (They did for me when I said I do not have a stock set up so need to make sure I get the right parts) I was told the front disc OEM part no, based on a 2002 998(S) Eu only! disc part no. Is different to the base mode 998. It actually is the same off the shelf part no. as the 996R and 998FE disc according to Ducati. No other bike in the 998 range has that same part no. for the front discs. Item 5, Page 118/119 > Ducati_998S EU Parts 2002 < manual show the same part no as Ducati Ducati Main dealer quoted for my bike and I' ve had no problems to date with parts supplied by them. My 2002 998s has P4 calipers, Page 112 > Ducati_998s Eu Parts 2002 < show the 4 pad (P4) calipers as OEM Drifting off topic, Item 5, page 78/70 > Ducati_998S FE 2004 < manual show the same part no. I also had a 996R part manual but can't find it, I've seen the same disc part no quoted. 492.4.026.1A I've looked through all the 998 part catalogs because... My 998 FE/Ohlins forks & Yoke fit on to the 998S discs on my 2002 bike with 10mm offsets. I've since seen a stock 996R, 1 owner with low mileage with the same disc, offset discs. Obviously there maybe some variations and I am no expert with Ducatis, only as good as the info at my disposal.
And the exhaust is 54mm (not standard) it's making a few more bhp, was making about 154hp (when it was last dyno'd) No idea what is is making now but probably less. I suspect the cam's are stock now but the head is not. Will know more when I do the belts and valves clearances or have the motor out next year.
