KART SUPPLYAuto Express Centrifugal Clutch 3/4" BORE #35 Chain 12T for GO Kart Mini Bike Engine 3/4 BAR

This is my second clutch from them. The first one wouldnt enguage out of the box til I smacked it then I blew the motor that had the clutch so with a new motor I bought a new clutch. This clutch has failed at 19.1 hours of abuse. In those 19.3 hours were 10 hours of off roading, and 6 gokart tires of burnouts. At 18.7 hours I was riding in the woods when my wheel got stuck on a tree root and I tried to throttle out of it. This is when it slipped for the first time. It was smokey but after pushing out of it it rode fine until 19 hours came. I was causially Street riding when I came to a stop and it was not really picking up speed in lockup until 2.5k rpm when it use to be 1.65rpm. I tried hill climbing and it didn't go until 3.1k. On my way back it was getting worse and worse to the point it was sounding like a CVT. I parked it at 19.1 hours. The next day I rode it, it still sounded liek a cvt and leaving a cloud of smoke. I was at 5krpm slowly picking up then it locking up once on speed and I tried to go up my driveway on a hill. This was the end. I full pedaled and it was at 7356rpm constant and not going anywhere. I fogged so much smoke I couldn't see I front of me and when I stopped, the bell was Red hot. I pulled the rope again and bypassed the pedal and 9krpm got me up the driveway until the garage bump when it was standing still. It was a fun 19.3 hours and I bought a new one that comes tomorrow. You can't go wrong with this clutch.

Great replacement clutch for kid’s go kart. It’s a different style and different looking clutch but with the right bore and teeth, this clutch slid right in and did the job. Hasn’t slipped or jammed; it’s got about 6 hours of use so far on a 4hp go kart.

I bought this clutch after wearing out a nice name brand doing stupid stuff on my Minibike. This thing worked great! I’m not sure how long it will hold up, but I ruined my last clutch and this was under 20 bucks so it worked great! It fit correctly out of the box

Didn't have much initial grab for quick take off. Would've gone with a belt driven one instead if I had the money. Worked great though.

As described

I ordered this as a replacement for the old one I had on my go cart. It fit nicely. I was disappointed by the fact that it doesn't come with any mounting hardware like washers or bolts. It does however come with a schematic with specs for the parts. The bolt to the shaft shows the size but does not include the thread type or length. I had to buy a couple and try them out hoping not to strip any threads. After I rigged something up, I was having problems with the engine turning over. After replacing the carbeurator and other engine related stuff I realized that the rotor wasn't spinning because there was too much resistance from the clutch. I doused it in some chain lube to see if that would work and it started right up. I am thinking that it could be resistance in the clutch and centrifugal components. Another positive is that the key is attached to the clutch so you don't have to worry about it falling off (that can be a con as well if you are looking for a detached key.) Hope the review helps those looking. One last thing, these clutches sometimes don't have accurate pictures and you have to look in the description for the number of teeth. Don't look at the pic and try to count them because sometimes it's the wrong tooth count. I've had that problem in the past.

I did a lot of research before I bought this particular product, and I found that this centrifugal clutch was much much better than the one that I had previous. It is very responsive and grips well.I am very happy with it, I would buy it again. It does require a fine thread setscrew, I did have to go to the hardware store and buy one. I don't remember the exact size, I actually bought several different sizes, they're fairly inexpensive and one of them fit.

I was kinda worried about purchasing one of the most inexpensive clutches on Amazon. But after running it on my mini bike im convinced that this cluch is cheep in price and not quality.