Problem Solvers Direct Mount Adaptor 29mm BOOST offset 73mm BB 34.9mm clamp w/shims 31.8/28.6 S.H.I.S Lower-EC34 }Hayes HFX-MAG -9 Sole Master

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Problem Solvers Direct Mount Adaptor 29mm BOOST offset 73mm BB 34.9mm clamp w/shims 31.8/28.6 S.H.I.S Lower-EC34 }Hayes HFX-MAG -9 Sole MasterProblem Solvers Direct Mount Adaptor 29mm BOOST offset 73mm BB 34. 9mm clamp w shims for 31. 8 28. 6. These handy adaptors allow riders to install direct mount derailleurs onto frames without the necessary mounts. Works for Shimano and SRAM High Direct Mount front derailleurs TECH SPECS Front Derailleur Clamp 28. 6 (1 1 8") Front Derailleur Clamp 31. 8 (1 1 4") Front Derailleur Clamp 34. 9 (1 3 8") Front Derailleur Clamp High Direct Mount