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Shimano SG-8S31 Alfine/Nexus small parts kit
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Sobre este item
- Required for installation of Alfine 8S IGH hubs.
- Kit includes:
- NON TURN WASHERS FOR VERTICAL DROP OUTS
- CAP NUT
- CASSETTE JOINT (CJ-8S20)

Quentin Spencer (comprador verificado) –
Missing the cable fixing bolt
If you’ve purchased a wheel with a Shimano Alfine hub, to install it on a bike that didn’t previously have it, you will need three other things:1. Shimano SG-3C40 Nexus Sprocket (18T)2. Shimano small parts kit (this product)3. Shimano Alfine & Nexus Hub Shift Cable Fixing Bolt UnitThe sprocket is sold separately because it comes in different sizes. I can’t figure out why the fixing bolt unit is sold separately. It’s only an extra $3, but it’s highly annoying to be putting everything together and realize you are missing one part. What’s the deal, Shimano?
7DegreesN (comprador verificado) –
Alfine 8 uses several different models of cassette joint.
This cassette joint recommended to purchase with my Alfine 8 SG-S7001-8 was the wrong model for my Alfine 8. This one has wider notches and does not lock into place. had to purchase the Cj-S7000 separately, but will use the other parts that came with this kit. I recommend checking compatibility before purchasing,
M. F. Daumen (comprador verificado) –
If you need it, it’s the thing you need.
I bought this to install a shimano alfine 8 internal gear hub and it works great. It had the appropriate washers for my drops, and it is nice insurance to have the small plastic bits around in case of a mishap.
Mike (comprador verificado) –
Perfect replacement, easy installation
Fit perfect with my nexus 8 hub. Needed to replace original assembly after I damaged the cable clamp, not a separate part, like an idiot in a hurry to fix it the first time, always plenty of time to fix it the second time.
John J. (comprador verificado) –
This shifter works great.
Received this shifter in like one day. Just as pictured. Mounted easily and adjusted the cable easily, then away i go.
Alfred yap (comprador verificado) –
Just what I needed
Complete kit. Brand new. Perfect for Alfine 8 speed hub kit
Michael D. (comprador verificado) –
Perfect fit
Perfect fitDifferent colors for spacers are fine since they are not interchangeableFound these faster than bike shopThere is a great diagram from Shimano to assemble these easily and correctly
Eternaldawg (comprador verificado) –
Not what the description say it is for
I gave a 3 stars because although the description of the kit said it was for my Alfine 8 Speed, one part, the major one, was the wrong one. On the other hand, the customer service was good.I got myself a brand new Alfine 8 speed IGH. Since I am new to the Internal Geared Hub scene I looked at the description of the item. The first line in the description is: “Required for installation of Alfine 8S IGH hubs.” I have an Alfine 8 speed hub, this says it is for an Alfine 8 speed so I ordered one. When it arrived I went on youtube and followed a video on how to install the components I had just received. I installed the snap ring for sprocket retention and the driver cap. Next was the cassette joint. No matter how much I tried to get it to go on the hub there was no way this contraption would fit in place. When I looked at the inside I noticed that the markings inside the cassette joint were not the same as the ones on the hub. I did some research and found an exploded view of the parts for the Alfine 8 Speed. I found out that the proper part number for the cassette joint should be CJ-S7000. The one I got in this kit was a CJ-8S20. So for those who are new to the Alfine IGH keep this in mind.After contacting the seller, Layger, they quickly resolved the problem to my satisfaction.
Paul John Lewin (comprador verificado) –
As advertised. Good service
As above
Happy From Fresno (comprador verificado) –
Perfect fit genuine SHIMANO
Worked perfectly for my rear hub, changed a rear wheel assembly and the IGH I purchased didn’t come with this part. C6001, but the cost was inline with bicycle shops and available sooner. If you need it buy it it works well.