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Wheels Manufacturing Shim for 1-1/4" Derailleur on 1-1/8" Seat Tube. Derailleur shims for adapting front derailleur clamps to a different sized frame seat tube.Derailleur = the size of the clamp on the front derailleur you have
Frame = the size of the seat tube the derailleur plus shim will fit
- TECH SPECS
| Front Derailleur Clamp | 28.6 (1-1/8") |
| Front Derailleur Clamp | 31.8 (1-1/4") |
