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Clutch diapharm color code

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Old Jul 29, 2019 | 10:16 PM
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Default Clutch diapharm color code

My 09 ultra has a red paint splash on the spring , on higher rpm shifts i only have to touch the clutch lever and the clutch starts slipping , so with my modes i think im on the cusp of a problem

What color would be the next level of tightness with out going to so heavy a lever pull, no money as usual so wondering what the next heaviest would be

Thanks

Dave
 
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Old Jul 30, 2019 | 12:51 AM
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No idea on red,never heard of it. Im using 37871-98a not stiff,holds well. $25.
 
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Old Jul 30, 2019 | 07:19 AM
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I know it's far more than the price of a clutch spring but you'd never have to worry about slippage again.

Amazon Amazon
 
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Old Jul 30, 2019 | 08:31 AM
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Originally Posted by Big Dave
My 09 ultra has a red paint splash on the spring , on higher rpm shifts i only have to touch the clutch lever and the clutch starts slipping , so with my modes i think im on the cusp of a problem

What color would be the next level of tightness with out going to so heavy a lever pull, no money as usual so wondering what the next heaviest would be

Thanks

Dave
Yes they are color coded. Seen a listing here years ago. Hopefully someone will be along soon with more info.

Jim
 
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Old Jul 30, 2019 | 10:17 AM
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I don't know Orange maybe ?

Dave
 
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Old Jul 30, 2019 | 04:47 PM
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On an 09 bike, could it be that your springs are just worn?
 
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Old Jul 30, 2019 | 05:17 PM
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FWIW:

37882-06A blue dot (260 lbs/ft) 2006-88", 2007 thru 2010-96"
37871-04 yellow dot (300 lbs/ft) 2004-05 88" and 2010 Limited
37871-98A (320 lbs/ft) 1998-2003
37807-03 pink dot (365 lbs/ft) 2007 thru 2010-103 "Police"
37951-98 (385 lbs/ft) Current SE

And from another source:

37882-06 (117 KgF) 2006-88”, 2007 thru 2010-96”
37871-04 (135 KgF) 2004-05 88” and 2010 Limited
37871-98A (145 KgF) 1998-2003
37871-98 is reportedly the same as above except cheaper, but although is no longer available may still be in dealer inventories.
37807-03 (165 KgF) 2007 thru 2010-103 ”Police"
37951-98 (175 KgF) Current SE

 
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Old Jul 30, 2019 | 05:34 PM
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For what it's worth, the yellow dot on my 2010 Limited slipped with only a Stage 1 upgrade. Got really bad after cam upgrade and wouldn't stick for **** after the FM107.
 
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Old Jul 31, 2019 | 11:41 AM
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Thanks guys I found a 37871-98 NOS rated at 320lbs for $17.00 , Cheap enough to try

Dave
 
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Old Jul 31, 2019 | 12:19 PM
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So what are the odds of being able to changing the spring through the Derby cover ?

Dave
 

Last edited by Big Dave; Jul 31, 2019 at 12:55 PM.
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