Now installed but I do not remember a red stripe on the 1275's.

 

I don't know about stripes or other markings. The AIM springs I installed didn't have any. However, if you put a stronger spring alongside a stock one, it's easy to see a difference. A stronger spring can have a different wire thickness, a different coil wind rate (coils/inch?) or a different length. The new AIM springs were shorter than the stock ones, which makes them effectively stronger.

 

I checked my set of 1275 springs & they appear to have a pink, or maybe light red?, stripe on them.

 

Awesome! Thank you for reporting that! Do you have a set of digital calipers to measure the coil-wire thickness? One of the previous posts mention that--which might make sense on proper identification between all three sets of 1100, 1200, and 1275. Are the 1275NM suppose to be pink? Any documentation for this?

I tried calling the dealer and searching online and couldn't find anything conclusive.

This is what I found for the 1200NM springs:

1200 NM springs with red stripe; P/N: 37000288

 

I just got the 1200N springs and they clearly have a red strip on them.

Also, I 've looked through my 2021 Service Manual and for the life of me cannot find the torque specs for the spring stopper plate and the derby cover. Does anyone have the torque specs or know where it is located in the 2021 Service Manual? Thanks

 

If it's any help, it's on page 7-15 in my '18 manual, under
CLUTCH, ASSIST AND SLIP
REMOVAL AND INSTALLATION.

My picture from that page in my manual is very blurry, so I'll have to get home to verify, but it LOOKS like 75-95 in-lbs. I know it's around there. I used 90 when I replaced mine.

 

Thanks. Well, I finally found it on page 5-21 Under Clutch pack. 70-100 in-lbs. Alternately tightening 1-2 turns to prevent dame to stopper plate. Never found the Derby cover specs in the manual but I did find it on the instructions for the HD Derby cover I put on the bike. 84–108 in-lbs.

 

Just found it myself.

 

In the 2021 service manual on page 2-11 it says the clutch inspection cover screws get tightened to 25-35 in. lbs. It's always been 84-108, but this cover is different.

 

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