There appear to be three types of rear aluminium monoposto subframes, each distinguished by the type and way the ECU is/was positioned in each. These would roughly be: (i) the early ones for the 'big brain' P8 ECU; (ii) the "front-to-back" newer ones, for the 1.6 ECU; and (iii) the "side-to-side" newer ones for the 748R of 2002. The factory original aluminium monoposto rear subframe of my 998S Monoposto (2002) was sold by the previous owner and replaced by a biposto frame and fairing. I am trying to source the period correct monoposto subframe to bring the bike back (or as close as possible) to its original configuration but I am puzzled as to which is the period and model correct rear monoposto subframe for this model/model year. To pre-empt your comments, I am fully aware of the uphill task in sourcing an original one, both in terms of limited availability as well as price tag. Too bad Pierobon in Italy (who purportedly produced same for Ducati back in the day) has ceased production of same for some time. The official parts manual for the non-limited edition 998S of 2002 (strangely) shows the same steel biposto subframe being used for both the monoposto and biposto versions. The official parts manual for the 998R of 2002 shows the "side-to-side" ECU type monoposto subframe, which is confusing, as the ECU on the 998R (unlike the 748R produced the same year) is plugged on the lower right hand side of the bike, next to the battery. Is it safe therefore to assume that the non-limited edition 998S monoposto versions of 2002 also used the "side-to-side" ECU type monoposto rear subframe (like the one depicted), even though their ECU is also - like the 998R - plugged on the lower right hand side of the bike, next to the battery?
They are indeed Guillaume, which is why I was confused with the adoption, by the factory, of the "side-to-side" ECU-type rear monoposto on the 998 range. On the 748R of 2002 at least (see below) this type of subframe served a function.
This does make sense in terms of production costs management, if they had a bunch of these mono subframes left, despite not using the 1.6M anymore on the 998.
Nick, 998 mono subframe part number 47120341D cross references to the following bikes: MY01 996R, 996RII 748R, 748RS, MY02 998 Bayliss, 998 Bostrom, 998R, 748R, MY04 998FE. As you have found it is not listed for the MY02 998 and 998S or MY04 mono Matrix for some reason That part number also had A (MY00 748R and RS) and C (MY01 996S) variations which were superseded by the D. The 998 and 748 parts books with the exception of the Rs do not show the subframe variation but do have the mono and biposto seat options detailed in some of them. The original 916 mono subframe part 47120061A was used for 916s from MY94-MY98 and MY99 996SPS, variation 47120061B was used mostly for SP and R variants of the 916 and 748 from MY94-98 and the MY99 748SPS. These should match the P8 and 1.6 ecu fitments There is another subframe specified for the MY03 998RS, 47110081A which looks more like the original 916 subframe This would suggest there were at least 6 listed mono subframes with the latter 4 used from MY00 onward. To answer your final question... Yes HTH
[QUOTE="Guillaume69, post: 1983327, member: 47049" FYI, 998 Biposto subframes do not share this oddity.[/QUOTE] They did not indeed Guillaume, neither did they share though the same desirability as the monoposto one's. By the way and if you don't mind me saying, that is a very tidy and fresh undertail section you have there over those shinny aluminium Termi's.
In granulated detail, that is indeed what my search yielded up too Denzil as far as the monoposto rear subframes go in terms of part codes. Broadly speaking in terms of function and design, the principle three types are those found in my opening message to this thread (with the remainder being indistinguishable, if not purely numerical, variations of same). As I am a MY02 998S MON owner, Andy has now confirmed to me that the period correct rear monoposto aluminium subframe is indeed the "side-to-side" one (as used in that same year to house both the big brains of the 748R which justify its use, as well as the side brains of the 998/998S/998R which don't). On a personal (and somewhat purist's) note, I wish the previous owner had not sold off the aluminium rear monoposto some years back, since even sourcing a like one from the second hand market (which I now have), it will still be missing the factory's designated sticker with the VIN that will pair it - for originality purposes - with the VIN on frame.
This is the tail of my 04 998 Matrix, which was excepionnally well preserved by its two previous owners. I got it with 11,000kms two years ago and am only enjoying it and trying to keep it as fresh. End cans are not Termis but 50 Arrow Titanium. And they do look (and sound) gorgeous too. Nb: If I am not mistaken, Matrix all came as Biposto from the factory, and are all MY04 only.
They were indeed, although I recall seeing online once a bespoke Matrix monoposto's green/white tail unit that looked very smart on the Matrix. PS: Always to my humble opinion, time proved that the Ti Arrow's outperformed in sound, price-to-value ratio, built quality and performance, the Termignoni's. However, Ducati's unmistakable direct and indirect marketing instilled to all Ducatisti that it is a sacrilege to have anything but red and Termignoni fitted on a Ducati 748/916/996/998.
After quite a travel from Japan, and having being removed from a 748R (2002), it has a arrived at last in near mint condition with all weldings intact. Sturdy and weighing in at only 1140 grams; can't wait for the weekend to have it fitted. View attachment 272947 View attachment 272948
Andy as we share the same model/model year and if its not too much hassle, could you please let me know of the part number for the subframe's VIN sticker (printed on the sticker itself on the lower right part)? Cant seem to find it listed in the parts manual and I am privately commissioning a new one for mine. Thanks in advance
For the sake of expanding the knowledge base on aluminium monoposto subframes, I share some pictures sourced from the certain sale posts earlier today that evidence a type of subframe (claimed to be factory original) that appears to have an extra aluminium bar (resembling a metal straw) welded on top of the existing aluminium tube. Has anyone seen something like this before?
... and a further one from the inner part showing the extra welded aluminium tube from a better angle (where the resemblance to a metal straw is uncanny).
