KCNC Front Derailleur Clamp 31.8mm Detail These front derailleur clamps, manufactured by KCNC, are designed to adapt braze-on style front derailleurs to standard diameter seat tubes. This design integrates the clamping bolt and derailleur mounting bolt to simplify things and save a little weight. Compared to a standard Shimano adapter clamp, these are 15 grams lighter. Installation Beyond standard derailleur placement and adjustment, installation of the KCNC derailleur clamp only requires use of the derailleur's mounting bolt. Once tightened, the clamp and derailleur are both secured. Specifications - Weight: 15 grams
- Material: 6061 aluminum
- Size: 31.8 mm
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