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Shimano Saint rear derailleur RD-M820 10/11 speed 11-36t (42t)
Product Details
Shimano Saint rear derailleur is the ideal start for a Brompton derailleur conversion. Impressive build quality! 11- 42t max is possible with longer B tension screw.
Note: I don't give tech support to make these conversions work as there are too much variables (different cassetes and derailleurs etc) So you have to figure it out on your own. It's not so easy to get it right.
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