Jtek 8 Speed Thumbshifter Mk2 for Shimano Alfine & Nexus Internal Hubs

£49.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
- Speed: 8 Speed
- Material: Aluminium cold forged / anodized
- Shift Cable: Stainless Slick
- Weight: 123g
- Compability: Shimano Inter 8 MTB shifter compatible
- Bracket 22.2 mm
- Built in barrel adjuster
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Questions & Answers (9) Q & A
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Questions & Answers (9)
Will this work with Alfine s7001-8? It seems there are conflicting answers.
14 Oct 2023
This shifter will work with any Shimano Inter 8 internal geared hub, be it Alfine or Nexus. SK 16/10/23
can i use this with a nexus 7 hub
22 Jun 2023
Thank you for your enquiry, unfortunately this wont work due to the cable pull ratio & have the gears are set.
Kind Regards. JP 23/06/23
Will this shifter work with a shimano xt 8 speed pinion shifter from 1993?
17 Dec 2020
This part will only work with 8-speed Nexus and Alfine internally geared hubs- so most likely not.

JK 18.12.20
Can I mount this shifter on a 25.4mm handle bar?
17 Dec 2020
No, this is 22.2mm only.

Which JTek shifter?
19 Jul 2020
Hello, I’m looking at purchasing a bike fitted with a Shimano 8-speed IGH and Gates Carbon Drive system. I am thinking of replacing the supplied Shimano shifter with one from JTek (Mk.1 or Mk.2). Can you firstly confirm that there isn’t any compatibility problem and, secondly, give some idea of how the shifters compare in size with each other and the Shimano as it would be fitted to a riser style bar (580mm)?

Finally, how does the smoothness of operation compare
between the two JTek models given the price difference?

Thanks for your help.
So long as the hub is nexus or alfine there will be no compatibility problems,

will this fit on a 25.4mm diameter handlebar?
14 May 2020
the ring seems adjustable but is there a range?
Hi, no, the bracket is not flexible enough to open out to 25.4. Thanks
Will this fit the Alfine SG-S7001 8 speed IGH?
13 Jan 2020
and what are the main different between this and the more costly Jtek 8 speed shifter to 99,99GBP?
Yes these work nicely with the S7001-8.

The Mk1 Jtek shifter is a slightly larger, but much more adjustable unit. The lever is a nice length so shifting is slighter, but this is a smaller shifter!

Thanks - 14/01/20
For which Alfine hubs will this shifter be "push away from you for an easier gear"?
14 Oct 2019
I understand that different generations of Alfine / Nexus 8-speed hubs have the shifting cable operation reversed. I am thinking of using this shifter in a new set-up, but would like it to shift like my old derailleur gears, i.e. push away from me to get to an easier gear.

Which hubs would give this action with this shifter?
For all Nexus and Alfine 8-speed hubs except the S7000 series Alfine hubs, the cable is loosest in the lowest gear. Therefore, all shifters will be push away and get harder as they pull more cable.

Thanks - 21/10/19
Do you have This part in stock? If so, how long to arrive in Madrid?
22 Jul 2019
Jtek 8 Speed Thumbshifter Mk2 for Shimano Alfine & Nexus Internal Hubs

yes, this part is currently in stock. It would depend on what delivery option you selected in regards to how long it would take to arrive. If you add the items you wish to purchase to your basket, the website should calculate the cost of delivery to Madrid.