Rohloff Splined Carrier Standard – Splined sprocket adapter with snap-ring
The Rohloff Splined Carrier Standard (8540) is the splined sprocket adapter with snap ring that mounts Rohloff splined steel sprockets from 13 to 21 teeth on the SPEEDHUB 500/14 at the standard chainline.
Why the splined carrier?
Full sprocket range. Takes every Rohloff splined steel sprocket from 13T to 21T. 
Standard chainline. 57 mm on 135/142 mm hubs and 75 mm on 170–197 mm hubs. 
Fast sprocket changes. Once the carrier is on, sprockets change in minutes – just remove the snap ring. 
Every SPEEDHUB can be upgraded. Rohloff states that all SPEEDHUB 500/14 hubs can be converted.
Who is it for?
- Riders changing gearing often. Switch between sprocket sizes for touring, loaded or city riding without a sprocket remover.
- Owners of older threaded-sprocket hubs. Upgrade to the reversible splined system.
Compatibility
| Rohloff part number | 8540 |
|---|---|
| Sprockets | Rohloff splined sprockets 13–21T |
| Chainline 135/142 mm | 57 mm |
| Chainline 170–197 mm | 75 mm |
| Retention | Snap ring (8539) |
Frequently asked questions
Standard or slim carrier – which do I need?
The standard 8540 gives a 57 mm chainline and takes 13–21T. The slim 8540S sits 2 mm further inboard (55 mm) and takes 15–21T. Choose the one that lines up with your chainring.
Can I mount a Gates belt sprocket on it?
No. Splined Gates Carbon Drive sprockets need the Lock carrier 8540L.
About Rohloff
Rohloff AG is a German engineering company based in Fuldatal near Kassel. Its SPEEDHUB 500/14 is a sealed 14-speed gear hub with evenly spaced gears, built for riders who want a drivetrain that keeps working for tens of thousands of kilometres with little more than an annual oil change.
BoodaBike in Budapest is an official Rohloff service centre, trained by Rohloff, and an official European distributor of Rohloff hubs and spare parts. Every part we sell is genuine Rohloff, and we are happy to help you find the right part number for your hub.