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My AIM had the fluid leak by issue. Engagement started to get closer and closer to the grip. Checked reservoir and yep, fluid level was low. E-mailed them and explained what was happening. They said to send the unit back to them. I said if just seals, please send them, I'm capable of replacing seals. The difference in the seals is a plastic coating on the urethane seals. The replacements don't have that coating. They showed up in the mail, free of charge. Replaced and haven't felt any changes in the engagement since install. Haven't had a chance to put on more than a 1,000 miles or so since the seal swap though, time will tell, but so far so good.
They did the exact same thing for me, very quick response on their part.
Have had my AIM since January and it’s the second version. I went for a ride today and felt the clutch handle a little weird. It was getting soft and working too close to the handlebar. I was having difficulty getting out and in gears (kinda scary). Lucky I was close to home. I got home and checked the reservoir level and it was almost empty. I just finish taking the AIM slave cylinder off, I guess my AIM is leaking. Just sent an Email to AIM so hopefully they’ll replace it. I’m kinda thinking I might try a Muller though. We’ll see.
I installed the AIM second generation and it worked like a charm for a few thousand miles. Last weekend I went for a ride and started having difficulty changing gears. Luckily I was able to get home and checked the clutch fluid reservoir and it was almost empty. Called AIM and they sent me anew one. Hopefully they got the issue resolved.
I have the 2nd gen AIM and was still fine 2 months ago when I put it up.
Not quite sure why there is an issue with some leaking. Brake fluid, seals, pistons and cyl bores have been around for ages.
I installed An Aim last night and spent five hours bleeding it and trying to get it to work. Gravity bleed, traditional bleed, backwards pressure bleed suction bleed, bled it at the banjo. No joy, could not get enough throw for it to disengage the clutch. Finally, disgusted, I pulled it out and put the stock one back in, bled it in five minutes and worked fine. Put everything back together and I’m on the road again. What a piece of ****. 5 hours to go from stock to inoperable and back to stock. Lame.
I installed An Aim last night and spent five hours bleeding it and trying to get it to work. Gravity bleed, traditional bleed, backwards pressure bleed suction bleed, bled it at the banjo. No joy, could not get enough throw for it to disengage the clutch. Finally, disgusted, I pulled it out and put the stock one back in, bled it in five minutes and worked fine. Put everything back together and I’m on the road again. What a piece of ****. 5 hours to go from stock to inoperable and back to stock. Lame.
I went through 3 new Aim secondary clutch cylinders. After about a month, each one gave a problem.
I finally gave up and got the Muller cylinder. Has operated properly for 8 months now.
Wow what a bummer. I am on my second AIM and fingers crossed it will be the last. If not I'll probably just say screw it and go back to OEM. My issue was a leak - which is a puzzler since these cylinders have been around since the the wheel was invented. You would think they would have it figured out.
Love my Muller! Convinced a friend of mine to put one in after the AIM SDR clutch upgrade, and he loves his too.
Gravity bled mine, then did a quick traditional bleed. Left for a 6K mile trip 2 days later, couldn't be happier.
Because pics
Last edited by NorthWestern; Jun 12, 2020 at 09:17 PM.
Rekluse makes one now as well. I am running their clutch and had to swap out the AIM because there wasn't enough throw to release the clutch . ( the Rekluse clutch has 14 or 16 plates, I forget) But it works well and its less expensive then the AIM, and doesn't leak!
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