Useful bearing part numbers for the N1 Cagiva Mito/Raptor/Planet Bottom End:
Name
Dimensions (mm)
Part Number
OEM Part Number
Notes
Left Hand Main
25x62x17
6305C3
800098349
Can obtain C4 for tighter clearances
Right Hand Main
25x62x17
6305C3
800098349
Can obtain C4 for tighter clearances
Left Hand Balancer Shaft
15x42x13
6302
800053248
Right Hand Balancer Shaft
15x42x13
6302
800053248
Left Hand Gearbox Output Shaft
20x52x15
6304
800024947
Right Hand Gearbox Output Shaft
14x22x13
NA-4900RS
800036440
Right Hand Gearbox Input Shaft
17x47x14
6303
800043382
Left Hand Gearbox Input Shaft
16x24x13
RNA-NA4901
800037198
Left Hand Water Pump Shaft
8x12x8
HK0808
800047678
Right Hand Water Pump Shaft
12x16x10
HK1210AA
800033718
Oil Pump Shaft
8x12x8
HK0808
800047678
Output Gear Pump Shaft
13x19x12
HK1312
800049016
Selector Drum Shaft
24x30x7.5
HK24X30X7.5-TN
800062200
This will need to be salvaged due to replacement parts not being easily accessible. Shares parts with KTM/Husqvarna but very expensive and not load bearing so not worth replacing IMO.
To completely overhaul the engines bearings you'll need a total of 13 bearings for the crank cases.
I have spent all day on this and I THINK it's correct. I've checked and cross referenced the part numbers and my existing cases and have tried to marry up the numbers to real-world buys. If there is a mistake please let me know and I'll update the table.
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