Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the September Giveaway for a Spider Rear Rack and a Heavy Duty Drybag from aeroe

Coverting the Nexus hub to "roller"
Hello from the bluegrass state.
I’m contemplating an upgrade to my Shimano Nexus 8sp hub (SG-8C31) but unsure if there are components/ shops for this.
The internal hub has a coaster brake which is irritating to anyone preferring another brake system or the ability to back pedal for crank position.
Can this hub be converted to “roller brake” (I’m guessing a roller brake is a disc or V brake set up, allowing for back peddling).
I didn’t want to attempt a “shade tree mechanic” operation and simply remove the brake arm.
Is this a lost cause?

“Striker, listen, and you listen close: flying a plane is no different than riding a bicycle, just a lot harder to put baseball cards in the spokes.”
Airplane (1980) – Rex Kramer (Robert Stack)

Here are some useful links for you to understand what is inside:


Just disconnecting the brake arm is not going to disconnect the coaster brake, and will cause problems.

I would suggest switching to rim brakes, instead of trying to install the Rollerbrake®. The Rollerbrake® is kinda like a drum brake.
Thanks Nigel, I'll see whats involved. I didn't understand the term "roller" and should have mentioned my interest in a disc brake set up instead.

The simpliest decision would be to sell my current 8 speed hub and invest in a hub thats already set up for a disc brake.

My current hub works fine so I have to decide whether to tolerate its function or put up the big bucks for what I want.

If there were parts to add to my hub and create the disc brake function then I would consider it but the SG-8C31 is engineered as-is.


“Striker, listen, and you listen close: flying a plane is no different than riding a bicycle, just a lot harder to put baseball cards in the spokes.”
Airplane (1980) – Rex Kramer (Robert Stack)

Hi Tom;


Or maybe a whole bike ready to go:

Possibly Related Threads...
Last Post
10-14-2019, 06:55 AM
Last Post: walter
10-10-2012, 05:50 PM
Last Post: SPANNER
06-29-2012, 12:25 AM
Last Post: AL_BUNDY
12-13-2011, 04:47 AM
Last Post: mr-asje
12-12-2011, 03:41 AM
Last Post: Joe_W
07-26-2011, 05:23 PM
Last Post: DaveM
05-17-2011, 05:33 PM
Last Post: hcjg1

Forum Jump:

10 Latest Posts
Hello from North Carolina
Today 09:36 AM
Raleigh "Trail" bike
Today 03:49 AM
Tour de France 2020
Yesterday 05:53 PM
frame choices
09-21-2020 10:08 AM
Front Derailer fails to shift to the big...
09-21-2020 06:12 AM
Know about the Hercules?
09-21-2020 04:18 AM
Pedals: Clip vs. Clipless
09-20-2020 07:43 PM
90's Raleigh R600
09-20-2020 06:21 PM
Proper way to torque a crank bolt on a s...
09-20-2020 03:37 PM
Where are you from and What is your favo...
09-20-2020 02:19 PM

Top 5 Posters This Month
no avatar 1. Jesper
38 posts
no avatar 2. Papa Dom
13 posts
no avatar 3. G_M
12 posts
no avatar 4. Painkiller
10 posts
no avatar 5. Sagan97
9 posts