Hi all,
I'm a new owner of the 2021 Monster 937. It seems that with the loss of the Trellis frame there is also the loss of the wide aftermarket support (or at least the aftermarket is taking its sweet time developing new products for this bike). This has lead me to search for parts from the older 821 which might also be compatible with this new Monster. Looking through part numbers, I've identified the following parts which may potentially be a direct or close to direct swap between the 821 and 937:
Front mudguard: The official carbon mudguard from Ducati for the 797/821/1200 and 937 have the same part number (96980991A). This would indicate that any aftermarket fenders made for the 797/821/1200 would also be a perfect fit for the 937.
Front wheel: Looking at page 152 of the parts diagram for the M937 and page 126 of the parts diagram for the M821 shows that the front wheels of the 821 and 937 may be interchangeable. The front wheel spindle, left/right spacers, bearings are all the same. The wheel inner spacer is has a slightly different part number (71413321A vs 71413241AA ), but I believe this difference doesn't matter too much since the fork spacing is identical (identical part numbers for front mudguard), and all spacers and spindles are identical as well. Likely a direct swap but others are free to weigh in on this down below as well.
Rear wheel: Looking at page 156 of the parts diagram for the M937 and page 126 of the parts diagram for the M821 shows identical sprocket mounting assemblies between the M821 and M937 (16022491A). Unlike the front wheels however, the bearings have different part numbers, and the part numbers for the inner spacer and various other spacers are different. Interestingly enough, page 119 of the parts diagram for the M797 shows the same inner spacer/bearing part numbers, but the part numbers for the sprocket mounting components are different. It's not clear that any combination of rear wheel parts from older monsters would fit on the 937 without testing the parts.
Rear shock: Looking at page 137 of the parts diagram for the M937 and page 135 of the parts diagram for the M821 shows that the rear shock might be interchangeable between the M821 and M937. The two bikes have identical mounting hardware for their rear shock absorbers (77915041A). The shocks are also visually similar in the diagrams, with the main difference being the 'stepped' preload adjustment on the 937 rear shock compared to the more traditional locknut design of the 821. Coupled with the fact that the two bikes have identical rear suspension travel and likely similar swingarm geometries (821 vs 937), it's likely that shocks for the 821 such as the Ohlins DU506 can also be fitted to the 937 and offer identical/comparable gains in performance.
Rear plate holder: This is a long shot, but between pictures in the parts diagrams (p130 for m937 and p20 for m821) and various aftermarket tail tidies, it does look like the position and spacing of the mounting holes for the two bikes are similar. Whether they are identical or just visually similar wouldn't be possible to tell without parts in hand. Fortunately, there are already a few tail tidy options for the M937 from Evotech (unfortunately sold out as of writing) and R&G racing (also unavailable as of writing) so less of a need to take a gamble on this one.
Obviously I've searched these since I am interested in replacing these items on my bike. I'm curious to see if anybody else has looked into this and if so, what other parts might be interchangeable between these bikes. Any inputs about the items I've identified are welcome as well.
I'm a new owner of the 2021 Monster 937. It seems that with the loss of the Trellis frame there is also the loss of the wide aftermarket support (or at least the aftermarket is taking its sweet time developing new products for this bike). This has lead me to search for parts from the older 821 which might also be compatible with this new Monster. Looking through part numbers, I've identified the following parts which may potentially be a direct or close to direct swap between the 821 and 937:
Front mudguard: The official carbon mudguard from Ducati for the 797/821/1200 and 937 have the same part number (96980991A). This would indicate that any aftermarket fenders made for the 797/821/1200 would also be a perfect fit for the 937.
Front wheel: Looking at page 152 of the parts diagram for the M937 and page 126 of the parts diagram for the M821 shows that the front wheels of the 821 and 937 may be interchangeable. The front wheel spindle, left/right spacers, bearings are all the same. The wheel inner spacer is has a slightly different part number (71413321A vs 71413241AA ), but I believe this difference doesn't matter too much since the fork spacing is identical (identical part numbers for front mudguard), and all spacers and spindles are identical as well. Likely a direct swap but others are free to weigh in on this down below as well.
Rear wheel: Looking at page 156 of the parts diagram for the M937 and page 126 of the parts diagram for the M821 shows identical sprocket mounting assemblies between the M821 and M937 (16022491A). Unlike the front wheels however, the bearings have different part numbers, and the part numbers for the inner spacer and various other spacers are different. Interestingly enough, page 119 of the parts diagram for the M797 shows the same inner spacer/bearing part numbers, but the part numbers for the sprocket mounting components are different. It's not clear that any combination of rear wheel parts from older monsters would fit on the 937 without testing the parts.
Rear shock: Looking at page 137 of the parts diagram for the M937 and page 135 of the parts diagram for the M821 shows that the rear shock might be interchangeable between the M821 and M937. The two bikes have identical mounting hardware for their rear shock absorbers (77915041A). The shocks are also visually similar in the diagrams, with the main difference being the 'stepped' preload adjustment on the 937 rear shock compared to the more traditional locknut design of the 821. Coupled with the fact that the two bikes have identical rear suspension travel and likely similar swingarm geometries (821 vs 937), it's likely that shocks for the 821 such as the Ohlins DU506 can also be fitted to the 937 and offer identical/comparable gains in performance.
Rear plate holder: This is a long shot, but between pictures in the parts diagrams (p130 for m937 and p20 for m821) and various aftermarket tail tidies, it does look like the position and spacing of the mounting holes for the two bikes are similar. Whether they are identical or just visually similar wouldn't be possible to tell without parts in hand. Fortunately, there are already a few tail tidy options for the M937 from Evotech (unfortunately sold out as of writing) and R&G racing (also unavailable as of writing) so less of a need to take a gamble on this one.
Obviously I've searched these since I am interested in replacing these items on my bike. I'm curious to see if anybody else has looked into this and if so, what other parts might be interchangeable between these bikes. Any inputs about the items I've identified are welcome as well.
