Can anyone help me with the generic transmission bearing no.s for the air-cooled '73 RD350
Thanks
https://www.partzilla.com/catalog/yamaha/motorcycle/1973/rd350/transmission
Which part????
Part 31?
The bearing numbers are listed in the specs in the back of the service manual.
Quote from: quocle603 on October 10, 2025, 06:48:58 AMhttps://www.partzilla.com/catalog/yamaha/motorcycle/1973/rd350/transmission
Which part????
Part 31?
All the bearings inside the gearbox. I am looking at the numbers like "B6305N" etc
Quote from: 1976RD400C on October 10, 2025, 08:01:43 AMThe bearing numbers are listed in the specs in the back of the service manual.
ok thanks. Let me check it out
Wow #14 is an expensive one! When ordering make sure you get replacements with the correct features as some of these have circlip grooves in the OD, etc. The Partzilla diagram mentioned above has photos of the parts you can use for reference
# PART NUMBER DESCRIPTION
12 93311-22027-00 BEARING, CYLINDRICAL 20-30-15
14 93305-20502-00 (93305-20508-00) BEARING B5205 Special 25-52-20.6
24 93310-22057-00 BEARING K20-24-10 S
27 93311-42045-00 BEARING, CYLINDRICAL 20NQ3315NE 20-33-15
31 93306-30504-00 BEARING B6305N
Quote from: SoCal250 on October 10, 2025, 12:51:41 PMWow #14 is an expensive one! When ordering make sure you get replacements with the correct features as some of these have circlip grooves in the OD, etc. The Partzilla diagram mentioned above has photos of the parts you can use for reference
# PART NUMBER DESCRIPTION
12 93311-22027-00 BEARING, CYLINDRICAL 20-30-15
14 93305-20502-00 (93305-20508-00) BEARING B5205 Special 25-52-20.6
24 93310-22057-00 BEARING K20-24-10 S
27 93311-42045-00 BEARING, CYLINDRICAL 20NQ3315NE 20-33-15
31 93306-30504-00 BEARING B6305N
thanks SoCal250
Managed to find below , not sure if they are exact replacements
B6305N
20-33-15 -20NQ3315NE (Koyo)
20-24-10 -K20-24X10 S (Koyo)
B5205 Special
20-30-15 - RV203015-JTEKT (Koyo)
Koyo brand is Yamaha OE :twocents:
I replaced all of transmission bearings on 75 RD last winter. Ordered from "Yamaha Parts Online" (babbitts) and the prices were very reasonable $218 bucks for all of them, all OE.
It's a little more expensive these days
MSRP Babbitts Partzilla
93311-22027-00 $52.99 $41.33 $37.39
93305-20502-00 $125.99 $98.27 $92.92
93310-22057-00 $42.99 $33.53 $33.41
93311-42045-00 $32.15 $25.08 $26.31
93306-30504-00 $71.99 $56.15 $56.13
TOTAL $326.11 $254.36 $246.16
Here's what Yambits sent for a RD400 countershaft ($20) and clutch shaft ($33) bearings.
Quote from: SoCal250 on October 11, 2025, 12:38:29 PMIt's a little more expensive these days
MSRP Babbitts Partzilla
93311-22027-00 $52.99 $41.33 $37.39
93305-20502-00 $125.99 $98.27 $92.92
93310-22057-00 $42.99 $33.53 $33.41
93311-42045-00 $32.15 $25.08 $26.31
93306-30504-00 $71.99 $56.15 $56.13
TOTAL $326.11 $254.36 $246.16
Nice research Russ