The GoatLink 11 hanger extension offsets the position of your 11-speed Shimano mountain bike rear derailleur allowing you to be able to run a wider range cassette while improving performance.

Same ergonomics and reliability of Shimano shifters and derailleurs
Gear range, simplicity and quietness of SRAM 1x11 drivetrain
High-performance and lightweight

This project began with the desire to run 11-speed Shimano derailleurs and shifters with SRAM 10-42t XD cassettes. Granted the combination can work without modification - but performance wasn't quite what we'd expect from Shimano and SRAM's finest.

When used with a 10-42t cassette, the GoatLink 11 re-positions SLX M7000, XT M8000 and XTR M9000 rear derailleurs such that free chain length between the cassette and the top derailleur pulley is within 1% of what Shimano intended while cassette tooth engagement in the smallest cog is improved by 27%.

Knowing that certain situations call for a range beyond that provided 10-42t or 11-42t cassettes, we tweaked the GoatLink 11 to also significantly improve Shimano 11spd rear derailleur performance with extended-range like the Wolf Tooth GCX 44t modified 10-44t XX1 or X01 cassette.

Compatibility

Cassette • Compatibility
11-40 • Not Required
11-42 •  Not Required
11-45 •  GS/SGS Derailleur
11-46 •  GS/SGS Derailleur
10-42 •  GS/SGS Derailleur
10-44 •  GS/SGS Derailleur (Wolf Tooth GCX44)
10-45 •  Not Optimized
9-44 •  Not Optimized

Other notes:

The GoatLink 11 is compatible with SLX M7000, XT M8000 and XTR M9000 series 11-speed Shimano rear derailleurs.
Not compatible with Shimano RD-RX812 or RD-RX817 due to the 31T capacity limitation.
The GoatLink 11 mounts only to standard derailleur hangers.
Double chainrings (2x) is supported and requires a long cage (SGS) rear derailleur with no more than a 12t difference in front chainrings (with an 11-46t cassette).
Triple chainrings are not supported.
Direct Mount native frames and SRAM derailleurs are not supported.

Improvements with the GoatLink 11*:

10-42t • Improved by 99%
Free Chain in bottom cog (unsupported chain - shorter is better and will increase shifting precision):

10-44t • Improved by 32%
10-45t • Improved by 28%
11-45t • Improved by 36%
11-46t • Improved by 32%
9-44t • Improved by 26%

Chain Wrap in bottom cog:

10-42t • Improved by 27%
10-44t • Reduced by 9%
10-45t • Reduced by 7%
11-45t • Reduced by 8%
11-46t • Improved by 12%
9-44t • Reduced by 8%

Summary in plot form - movement towards the red X is in the direction of goodness (more chain wrap and less free chain)

*Due to variations in derailleur hanger geometry, chainstay length, chainring size, B-screw adjustment, and suspension configuration, individual results will vary slightly.

Related Products

Drop-Stop chainrings

GoatLink for 10-speed Shimano mountain bike rear derailleur

Tech Specs

Weight:  19g
Material:  6061 aluminum
Included: stainless steel bolt
Torque:  8-10Nm
Made in the USA

Wolf Tooth Components GoatLink, 11 sp Shimano Shadow