Sprockets

The Rohloff SPEEDHUB 500/14 comes fitted with a 16 tooth reversible sprocket. 15 and 17 tooth reversible sprockets are available as alternatives. Hereby, an individual chainring/sprocket combination can be applied. The 15, 16 and 17 tooth sprockets are reversible, and therefore, can be used from both drive sides. For sprocket removal, a special Rohloff sprocket tool is needed.

Sprocket with 13 teeth

For the use of the Rohloff SPEEDHUB 500/14 on small wheeled bicycles (e.g. 20", folding bikes and recumbents) the special 13 tooth sprocket is needed. It uses a different chain line (58mm instead of 54mm) and is not reversible. When using a Rohloff chain tensioner on frames with dropouts thinner than 7mm, the longer chain tensioner mounting bolt must be separately ordered. For sprocket removal, a special Rohloff sprocket removal tool is needed.

The Rohloff SPEEDHUB 500/14 has been developed for racing which means that it can handle the heavy loads encountered during competition. Maximum torque loads in extreme conditions can be as high as 250Nm on the crank (= 150kg on the pedal). This will not damage the gear box because the high chainring/sprocket ratio transforms the low number of crank revolutions into a higher number of revolutions at the cog.

The higher the chainring/sprocket ratio, the lower the input torque to the gear-unit. It is imperative therefore that the chainring/sprocket factor does not drop below 1.9 (e.g. 34/17=2.0). The smallest permissible sprocket ratios for a rider weighing less than 100kg are: 32:17, 30:16, 28:15 and 26:13.

These are the equivalent to a 22:40 combination on a conventional drivetrain. There is no limit whatsoever for higher ratios which means that you can mount bigger chainrings than shown on the table for extreme downhill racing.

If the SPEEDHUB is mounted on a tandem bicycle or if the rider weighs over 100kg, a chainring/sprocket factor of 2.5 (e.g. 42/17=2.5) must be upheld.
This equates to sprocket ratios of:  42:17, 40:16, 38:15 and 34:13.

Note: If your customers intend to use a chain tensioner, then a longer mounting bolt (HURO8255) and more distancing washers (HURO8256) may be necessary to make this fit with the wider 58mm chainline that the splined sprockets use. Available from the Rohloff Spares page


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Description Colour Size Wt(g) Part No. Stock Lvl RRP Pack Unit
Speedhub Splined Sprocket, Lockring tool for 8540L/8540SLSilverOne Size HURO8518£39.99Each 
Speedhub Splined Sprocket, Replacement lockring ONLY for 8504L/8540SLBlackOne Size HURO8538£13.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with snap ring - 58mm chainlineSilverOne Size HURO8540£27.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with LOCK ring for Carbon drive sprockets -58mm chainlineSilverOne Size HURO8540L Low Stock£41.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with snap ring -SLIM - 55mm chainline for 15T or larger)SilverOne Size HURO8540S£27.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with LOCK ring for Carbon drive sprockets -55mm chainlinefor 15T or larSilverOne Size HURO8540SL£41.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver13T HURO8541£14.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver14T HURO8542£15.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver15T HURO8543£16.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver16T HURO8544£18.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver17T HURO8545
ETA: 13th Dec 2019
£20.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver18T HURO8546£22.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver19T HURO8547£23.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver21T HURO8549 Low Stock£25.99Each 
  • Good stock levels
  • +24h Please allow 24/48 hrs for assembly
  • Special Order Currently not in stock, contact us for details
  • Out of stock. Expected availability date will be displayed if known.
  • Discontinued. This product is no longer available.
Description Colour Size Wt(g) Part No. Stock Lvl RRP Pack Unit
Speedhub Splined Sprocket, Lockring tool for 8540L/8540SLSilverOne Size HURO8518£39.99Each 
Speedhub Splined Sprocket, Replacement lockring ONLY for 8504L/8540SLBlackOne Size HURO8538£13.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with snap ring - 58mm chainlineSilverOne Size HURO8540£27.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with LOCK ring for Carbon drive sprockets -58mm chainlineSilverOne Size HURO8540L Low Stock£41.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with snap ring -SLIM - 55mm chainline for 15T or larger)SilverOne Size HURO8540S£27.99Each 
Speedhub Splined Sprocket, Replacement Sprocket carrier with LOCK ring for Carbon drive sprockets -55mm chainlinefor 15T or larSilverOne Size HURO8540SL£41.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver13T HURO8541£14.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver14T HURO8542£15.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver15T HURO8543£16.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver16T HURO8544£18.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver17T HURO8545
ETA: 13th Dec 2019
£20.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver18T HURO8546£22.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver19T HURO8547£23.99Each 
Speedhub Splined Sprocket, Steel - Splined for Speedhub ONLY - ReversibleSilver21T HURO8549 Low Stock£25.99Each 
  • Good stock levels
  • +24h Please allow 24/48 hrs for assembly
  • Special Order Currently not in stock, contact us for details
  • Out of stock. Expected availability date will be displayed if known.
  • Discontinued. This product is no longer available.