Which Clutch Spring?

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Apr 15, 2022 | 07:52 PM

#11

Max Headflow

Seasoned HDF Member

Joined: Dec 2005

Posts: 19,703

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From: poway

Quote:

Originally Posted by 60Gunner

That's the problem with using the clutch hats. Makes speed shifting real difficult at higher rpms. Are you still using the SE spring besides? If so I'd definitely go back to a lighter spring. I sure wouldn't use one AND a performance spring.
I contemplated going with the AIM VP98 but didn't just for this reason.
The problem finding neutral is due to clutch drag(stiction) and is the result of the fluid being thick not allowing the plates/discs to separate properly. Especially when cold. Not an issue running ATF. Some clutch manufacturers actually recommend ATF such as B&M TrickShift.

If you want to race in a straight line, why not use a VPC? With one that is adjustable, you can use it to control your launch. You don't need to us the clutch to shift gears on a cable throttle bike. Wired throttle IMO are react too slow tho.

Apr 16, 2022 | 01:12 PM

#12

60Gunner

Grand HDF Member

Joined: Sep 2017

Posts: 4,359

Likes: 1,219

From: Dubuque, IA

Quote:

Originally Posted by Max Headflow

Good point and don't get me wrong, I like the idea of the clutch hats. I was just warned of the stiffer high rpm pull. Given the fact I run high rpm all the time, I opted to just do the E1 extra p!ate kit and 10% spring(not 15% btw). At least for now. I may just do the VP98 a some point. Maybe with a Pingle shifter. If I did, the stock(yellow) spring would go back in tho.

May 10, 2022 | 03:47 PM

#13

JP7

Thread Starter

Cruiser

Joined: Aug 2015

Posts: 171

Likes: 44

From: Wisconsin

I finally have about 500 miles on the bike now. Weather and schedule have not cooperated. Neutral is getting easier to find and I'm still very happy with the clutch. Hooks up and isn't hard to pull. I'd say it's a little stiffer pull when revved up but it's not bad at all. The friction zone is easy to control at low speed and it hooks when I get on it. I'm calling it good and going to leave it alone. (we all know that's not going to happen)

Feb 21, 2026 | 08:28 PM

#14

Leimy

Road Master

Joined: Feb 2021

Posts: 1,035

Likes: 466

From: Phoenix Arizona

So SE springs have 2 ratings.
There is a 1200N and a 1275N rating.

Has anyone used one of these? Results?

Feb 23, 2026 | 11:27 AM

#15

gofastalot

Advanced

Joined: Feb 2012

Posts: 65

Likes: 8

From: Illinois

Quote:

Originally Posted by Leimy

So SE springs have 2 ratings.
There is a 1200N and a 1275N rating.

Has anyone used one of these? Results?

I've used the 1275N and I like it. I have shorty levers and don't have any problems with the force required. Although, it is a lot stiffer than stock. I still have the stock clutch pack on a Stage 2 107, putting out 109/114.5 and it holds great. It is a little less linear than stock if I engage quickly, with more of an on/off engagement. But if I am doing my job (steady on the lever) it is smooth.