what bearings for Aprilia Rotax 123 rebuild?

[samv]

Hi all,

Does someone know what bearings go into a rotax 123? are all the bearings the same as the ones that go into a rotax 122?

and what exactly is the difference between C3 and C4. it has something to do with clearance? can i use C4 for all ball bearings or are there some that need to be C3?

regards,

Sander
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Current Ride : 1992 Honda Cr250R , 1991 Aprilia AF1 125
Past Rides : Cagiva Supercity 125, Suzuki RGV250, Kawasaki ZXR400RR, Yamaha TDM850, Honda Hornet 600, Honda Cb1, Honda CBR400RR, Honda CBR900RR

[RhynoCZ]

Please read: https://www.aprilia125.com/manuals/12700_rotax-123.pdf

2 seconds on google...
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Pol Anorl]

as above check the aprillia forums, youl get much more help there
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[samv]

I read the manual, it doesnt mention what types of bearings are used.

And i didnt know that questions about a 125 motorcycle needed a seperate forum?


Do you tell people with a gixxer to go to the gixxer forum or a ducati rider to go to a ducati forum?
____________________
Current Ride : 1992 Honda Cr250R , 1991 Aprilia AF1 125
Past Rides : Cagiva Supercity 125, Suzuki RGV250, Kawasaki ZXR400RR, Yamaha TDM850, Honda Hornet 600, Honda Cb1, Honda CBR400RR, Honda CBR900RR

[RhynoCZ]

[Kickstart]

Hi

The Rotax parts list for the 123 lists them as 6206 C4 bearings.

Note that Rotax did change the spec of these bearings a few times (they had a habit of failing rapidly after being parked up over winter and they were trying to fix that).

All the best

K
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[samv]

Cheers for the info.

I'll go with the c4 bearings for mains then. The bike wont be parked up for winter anyway. Bikes need to be driven
____________________
Current Ride : 1992 Honda Cr250R , 1991 Aprilia AF1 125
Past Rides : Cagiva Supercity 125, Suzuki RGV250, Kawasaki ZXR400RR, Yamaha TDM850, Honda Hornet 600, Honda Cb1, Honda CBR400RR, Honda CBR900RR