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Problem Solvers Braze-On Front Derailleur Adapter 28.6mm, Black

These adapters clamp on to the seat tube so you can use your braze-on derailleur on a conventional frame.
DP0911

Problem Solvers Braze-On Front Derailleur Adapter 28.6mm, Silver

These adapters clamp on to the seat tube so you can use your braze-on derailleur on a conventional frame. Available in three common seat tube sizes with 20mm of vertical adjustability.
DP0910

Problem Solvers Seatpost Shim 27.2mm to 31.6mm

Switching frames doesn't mean you have to switch posts! Use your old posts without worry with Problem Solves seatpost shims. Dimension: Seatpost Size 27.2mm to Seat Tube Size 31.6mm, Thickness 4.4mm. Problem Solvers seatpost shims are not intended for use with carbon seat posts.
ST0244