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Rohloff Splined Carrier Slim Lock, ONLY for splined sprockets with 15 teeth or more/for Carbon Drive

31.46 EUR
Slim Lock splined carrier – only for sprockets with 15 teeth or more and Carbon Drive belt sprockets.
SKU: 8540SL
Available for backorder
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14-day refund
Lifetime support
Three years warranty

The Rohloff Splined Carrier Slim Lock (8540SL) holds a Gates Carbon Drive belt sprocket or a Rohloff splined sprocket (15 teeth or more) on the SPEEDHUB 500/14 and locks it in place with a lock-ring.

Rohloff Splined Carrier Slim Lock 8540SL with lock-ring
Rohloff Splined Carrier Slim Lock (8540SL).

Why the lock-ring carrier?

  • No micro-movement. The lock-ring fixes the sprocket laterally – Rohloff developed it to eliminate movement under Carbon Drive belt pre-tension.
  • Made for belt drive. Specially developed for Carbon Drive splined sprockets.
  • Slim version. Rohloff offers Standard Lock (8540L) and Slim Lock (8540SL) to position the sprocket for the right belt line.
  • Lock-ring included. Tighten to 30 Nm with the Rohloff Lock-Ring tool (8518) – no thread-locking compound.

Who is it for?

  • Speedhub riders with Gates Carbon Drive. A quiet, firmly seated belt sprocket.
  • Belt drive conversions. Moving a Speedhub bike from chain to belt.

Compatibility

Rohloff article no.8540SL
HubSPEEDHUB 500/14
SprocketsCarbon Drive splined sprockets; Speedhub splined sprockets 15–19 and 21 teeth
Not compatibleSpeedhub sprockets with 13 or 14 teeth; Hebie Chainglider
Lock-ring torque30 Nm, no thread-locking compound
ToolsLock-Ring tool (8518); sprocket remover 8508/8509 to remove the old carrier

Frequently asked questions

Slim Lock or Standard Lock?

They place the sprocket at different chainline positions. Rohloff's rule: choose the carrier that keeps the sprocket in the same position (±1 mm) as before. Send us your current set-up and we will check it.

Can I reuse my old splined carrier?

No. Rohloff states that a dismantled splined carrier (8540 or 8540S), including its retaining ring, must not be used again.

Should I use it with a chain?

Rohloff recommends the regular tool-free carriers (8540, 8540S) for chains; the lock-ring version is for belt drive.

About Rohloff

Rohloff AG is a German engineering company based in Fuldatal near Kassel. It makes the SPEEDHUB 500/14, the 14-speed gear hub that touring, trekking and expedition riders have trusted for decades, and is also known for its workshop tools, chain and sprocket wear gauges and Oil of Rohloff chain lubricant.

BoodaBike (Massive Bikes, Budapest) is an official Rohloff service centre, trained by Rohloff, and an official European distributor of Rohloff hubs and parts. Everything we sell is genuine Rohloff, and we are happy to help you pick the right part.