Posts
46
Joined
3/12/2016
Location
Oceanside, CA
US
Edited Date/Time
4/24/2018 12:16pm
I have an 04 that I just split the case on and need to swap crank and crank bearings. I try to understand what the differences are on OEM and how I can swap K3-K6 parts.
I got the hold on an almost brand new 12200-37F40 (that is labeled K5-K6 and sold as to fit 03-08) that I'll receive within a few days. I figure that one should fit because when I'm looking at aftermarket cranks same crank fits 03-08.
If I put that one in my 04 case, what bearings should I use? 09262-28027 or 09262-28044 both are listed to fit 04(K3-K6)
This K marking really confuses me.
Any help appreciated
Emil
I got the hold on an almost brand new 12200-37F40 (that is labeled K5-K6 and sold as to fit 03-08) that I'll receive within a few days. I figure that one should fit because when I'm looking at aftermarket cranks same crank fits 03-08.
If I put that one in my 04 case, what bearings should I use? 09262-28027 or 09262-28044 both are listed to fit 04(K3-K6)
This K marking really confuses me.
Any help appreciated
Emil
K3-K6 means it will fit '03 to '06 models.
I did a lot of google digging yesterday evening and I think I got some of the stuff figured out.
The crank from 05 is slightly heavier according to https://motocross.transworld.net/features/transworld-motocross-race-tes… . When looking at different aftermarket cranks(crank only without all seals and gaskets) those are labeled to fit 03-08 so I cross my fingers that the crank form a K7 will fit, I'll know in a few days when it arrives.
The different bearings for the different years has same ID, OD and width, but from 05 they added tabs with countersunk screws to keep them in place(see attached picture from a K7 case) and the bearing therefor has a cut on one side to give space for the tab. I have the 04 case with no tabs so I should be good with bearings for K4.
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