The most sold internal geared hub in the world is now online on Hubstripping with a lot of top secret informations: The Shimano Nexus INTER-8!

How should I maintain the hub?
What is the difference between the standard SG-8R20 and the premium INTER-8 SG-8R25?

Did you know that your INTER-8 loves to bathe in oil?

Did you know that Shimano improved the sealing by changing the dust cap on the new models?
- SG-8R27 (March 2007, english, Differences to January 2005, german and September 2006, english SG-8R25: Right Hand Dust Caps Parts 31, 44. Improved Sealing!)
- SG-8R30 (August 2007, english, Interchangeability Overview between SG-8R20, SG-8R22, SG-8R30, SG-8R35, SG-8C20 and SG-8C22. Also details about the applicable Sprockets in Combination with the new Dust Caps)
- SG-8R35 (August 2007, english, Interchangeability Overview between SG-8R25, SG-8R27 and SG-8R30. Also details about the applicable Sprockets in Combination with the new Dust Caps)
- SG-8C22 (March 2007, english, Differences to SG-8C20: Right Hand Dust Caps Parts 26, 42. Improved Sealing!)
All the details are on the static Shimano Nexus INTER-8 HUBSTRIPPING page.
Which is the better hub? Shimano Alfine, Shimano Nexus INTER-8 or SRAM i-MOTION-9? Read the Internal Hub Gear Review!
Have fun!

December 1, 2007 at 3:31 pm
After having asked several “experts” about the interchangeability of the premium and standard internal assemblies and having got mainly the answer that it is impossible to change them again I’m again surprised about the scheme posted here (I’ve found it in a 2004 techtalk newsletter of Shimano, too). With so many contrary statements I still wonder if there are any limitations in the interchangeability?
Thanks anyway for this very good information, also about the maintenance!
June 30, 2008 at 5:46 pm
I am interested in learning more about installation of this unit and of course the whole sale cost to me.
Thank you,
EEB
July 1, 2008 at 10:53 pm
Dick,
there are a lot installation details stored on hubstripping! Please check !
I don´t sell these hubs. Please contact your local dealer for prices.
Gruß,
Marco
October 7, 2008 at 5:35 am
Does anyone know the characteristics of the “Maintenance Oil” used in the “dip” technique? I have used Dexron ATF on a Nexus-8 SG-8R20, and it seems to work OK. ow I’m overhauling a “Premium” SG-8R25; I’ll use ATF again, but I’d rather use the closest thing to what Shimano recommends.
Thanks!
Steve
May 18, 2009 at 9:05 pm
Have a Nexus 8 speed for 2yr 5 mts. Loved it until recently. Gears 5 to 8 got noisy and now have locked. Cannot pedal in these gears. Only 1200 miles done on it and am very disappointed in Shimano quality in the Nexus. I have had Shimano equipped bikes for 30 yrs and this is the 1st problem. It has put me off internal gears for life!