Top Pull Road Derailluer Conversion

A few peeps out there have been modifying their old Shimano 9spd road derialluers so they will work on their Mountain bikes. I wrote a step by step guide on how to perform the modification.

I performed the actual modification to a Brand new 7700 Dura-Ace 9spd derailleur that I bought at the shop for around $65.

1. Un-bolt the pivot arm bolt from derailleur using a 3mm hex key.
2. Remove the E-clip that secures the second pin that secures the pivot arm.
3. Remove the pivot arm form the rest of the derailleur
4. Some material will need to be removed form the pivot arm now so the arm will align with the rest of the derailleur properly when flipped.
5. The necessary modification to the derailleur to make it fit is now done. If you want to you can remove even more material where you want to to make the piece lighter.6. The derailleur can now be reassembled starting with the pivot with the 3mm hex key bolt followed by the pin with the E-clip.
You are now done!