Wolf Tooth RoadLink

The RoadLink™ is optimized for use with 10 or 11-speed 11-36t and 11-40t cassettes and work great with Wolf Tooth’s 40-tooth GC cassette extenders and Drop-Stop chainrings. The RoadLink is optimized around Shimano road derailleurs. It works great for road, cyclocross, touring, commuting, and drop-bar mountain bikes.

Compatibility

• 10s Cassette Compatibility:
• 11-32: Not Required (GS medium cage rear derailleur works) 
• 11-34: Single (for double chainring be sure to not exceed the derailleur’s capacity)
• 11-36: Single (for double chainring be sure to not exceed the derailleur’s capacity)
• 11-40: Single (for double chainring be sure to not exceed the derailleur’s capacity)
• 11-42: Not supported
• 11s Cassette Compatibility:
• 11-32: Not Required (GS medium cage rear derailleur works)
• 11-34: Single (for double chainring be sure to not exceed the derailleur’s capacity)
• 11-36: Single (for double chainring be sure to not exceed the derailleur’s capacity)
• 11-40: Single (for double chainring be sure to not exceed the derailleur’s capacity)
• 11-42: Not supported
• 10-42: Not supported
• Double chainrings are only supported with GS (medium cage) rear derailleurs. You may need to change the front gearing so the rear derailleurs capacity is not exceeded.
• The RoadLink™ mounts only to standard derailleur hangers.
• The RoadLink™ is optimized for the 10- and 11-speed Shimano road derailleur geometry. It also works very well with 9-speed road derailleurs. Traditional SRAM derailleurs work but not the 1x specific X-HORIZON rear derailleurs. Campy derailleurs work best with cassettes up to 11-36.
• SRAMs Exact Actuation road shifters (10s and 11s) are interchangeable with their Exact Actuation mountain derailleurs – which can easily handle a 36 or 40 (and, for 1x, are available with a clutch) – and the CX1 will go even bigger with a single ring. If you already have SRAM, they also make nice front brake-only levers that match their rear shifters too. 
• Triple chainrings are not supported (medium cage rear derailleurs cannot accommodate that big of a range).
• Direct Mount-native frames are not supported. 
• Due to the lack of a clutch mechanism on Shimano road derailleurs, secondary chain retention (front derailleur or chain device) may be needed, especially for rough or off-road use.
• Due to variations in derailleur hanger geometry, chainstay length, chainring size, B-screw adjustment, and suspension configuration, individual results will vary.
• This 7.9mm max dimension is controlled by the Shimano spec, but a few derailleur hangers don’t meet the spec. You can file a bit of the bottom “tang” of those derailleur hangers to install the RoadLink™.