• Shimano Rear Mech Tool Derailleur Setting Gauge 12 Speed Dura Ace Ultegra Y3GK89600
  • Shimano Rear Mech Tool Derailleur Setting Gauge 12 Speed Dura Ace Ultegra Y3GK89600 Tool
  • Shimano Rear Mech Tool Derailleur Setting Gauge 12 Speed Dura Ace Ultegra Y3GK89600 Setup
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Shimano Rear Mech Tool - Derailleur Setting Gauge - 12 Speed

Shimano Rear Mech Tool - Derailleur Setting Gauge - 12 Speed

£5.95 GBP
£5.95 GBP
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Shimano Rear Mech Tool - Derailleur Adjustment Gauge - B Tension - 12 Speed


3D printed alternative to the flimsy paper tool that Shimano offers (Y3GK89600) to correctly set how far your derailleur is from the cassette.

Setting tool is compatible with the below 12 speed Shimano rear mechs.

RD-R9250 - Dura Ace
RD-R8150 - Ultegra

Markings for correct mech position for 28T/30T/34T cassette.

Shift into the largest cog on your cassette and position the tool as shown, the teeth of the bog should be in line with the relevant tooth side. The tool has a handy step which makes is much easier to hold exactly in position and to get an accurate setup.

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