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Discussion Starter · #1 ·
Hi! I'm new to the site. Just acquired a used '19 R3 to be used exclusively on the racetrack. It's got a clunk under hard braking / pushing which is caused by the steering head bearing. I'm just wondering if the dimensions of the '15 and '19 R3's bearings are the same? 47mm x 25mm x 15mm AND 55mm x 30mm x 17mm?

Thanks In advance to any replies!

Wheel Tire Sky Vehicle Cloud


(Red is kind of rare where I'm from, glad I managed to get one.)
 

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Nice color. It appears the bearings are the same for both years. The Yamaha OEM part #s are:
Upper bearing: 93399-99931-00 (supersedes 93399-999Y3-00)
Lower Bearing: 93399-99932-00
 

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Discussion Starter · #3 ·
Thanks for the reply! Ordered me a tapered set of bearings (NSK 32005 and 32006) as replacements.
 
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