Why are there 3 different part numbers for OEM friction plates on partzilla? Is the EBC kit really OEM?
Thank you all.
The EBC kit is not OEM; Honda does not use EBC as a vendor for any of their street bikes.
There are three different part numbers for the OEM friction plates because Honda uses three different and distinct types in each clutch stack. This is a multi-disc clutch, so you have alternating friction and drive or steel plates in a stack. It's not like a car where there's a pressure plate with friction material and a flywheel.
Dealer site links embedded below so you can see current MSRP and the parts diagram.
From the engine of the bike out, you will need one of these to go at the bottom of the stack: DISK B, CLUTCH FRICTION. 22202-MAE-000
Then one of the seven steel plates; you will likely be able to reuse your existing ones unless you have excessive wear; IIRC the manual tells you how to check them:
PLATE, CLUTCH, 22321-MAS-000
Then you stick one of the six regular friction discs on top of that: DISK, CLUTCH FRICTION, 22201-MAS-E00
And then you alternate steel, friction disc, steel, friction disc, etc., until you run out of 22201-MAS-E00s and steel plates. At the top or outermost side of the stack as it is installed on the bike is the last type of friction disc: DISK, CLUTCH FRICTION, 22201-MAE-000
The whole thing is topped off with a bearing, BEARING, RADIAL BALL (16003) 91009-MAS-003
, which should be replaced and is often not included in aftermarket kits, and the clutch pressure plate, 22350-MAS-E00
, which should be reusable unless it has excessive wear.
They don't show the entire stack in the diagram because they figure you're smart enough to figure it out given the parts catalog also tells their mechanics that they need the quantities of parts I've listed above.
Failure to put the discs in the correct order will result in odd behavior from the clutch, extremely accelerated wear or even a completely non-functional clutch. Each of the three types of friction disc have a different design and sometimes different friction material that may not be obvious at first glance.