![compatibility - Why is the Shimano R3030 FD not compatible with the 3503 FC? - Bicycles Stack Exchange compatibility - Why is the Shimano R3030 FD not compatible with the 3503 FC? - Bicycles Stack Exchange](https://i.stack.imgur.com/21nOR.png)
compatibility - Why is the Shimano R3030 FD not compatible with the 3503 FC? - Bicycles Stack Exchange
![SHIMANO 31.8mm Road Bicycle Front Derailleur FD 3503 3*9 27 Speed Derailleur Max 52T 3 Speed Front Chainring Down Pull Line - AliExpress SHIMANO 31.8mm Road Bicycle Front Derailleur FD 3503 3*9 27 Speed Derailleur Max 52T 3 Speed Front Chainring Down Pull Line - AliExpress](https://ae01.alicdn.com/kf/HTB1eL5EaOrxK1RkHFCcq6AQCVXah/SHIMANO-31-8mm-Road-Bicycle-Front-Derailleur-FD-3503-3-9-27-Speed-Derailleur-Max-52T.jpg)
SHIMANO 31.8mm Road Bicycle Front Derailleur FD 3503 3*9 27 Speed Derailleur Max 52T 3 Speed Front Chainring Down Pull Line - AliExpress
![SHIMANO FD-3503/4603 SORA / TIAGRA road bike folding car Front derailleur bicycle parts switch 3X9/10 speed free shipping _ - AliExpress Mobile SHIMANO FD-3503/4603 SORA / TIAGRA road bike folding car Front derailleur bicycle parts switch 3X9/10 speed free shipping _ - AliExpress Mobile](https://ae01.alicdn.com/kf/UTB8WQCvfVPJXKJkSahVq6xyzFXaQ/SHIMANO-FD-3503-4603-SORA-TIAGRA-road-bike-folding-car-Front-derailleur-bicycle-parts-switch-3X9.jpg)
SHIMANO FD-3503/4603 SORA / TIAGRA road bike folding car Front derailleur bicycle parts switch 3X9/10 speed free shipping _ - AliExpress Mobile
![Shimano Sora Fd-3503 Front Derailleur Road Bike Folding Bicycle 3503 Bike Parts 3x9 Speed Original Derailleur 31.8mm 34.9mm - Bicycle Brake - AliExpress Shimano Sora Fd-3503 Front Derailleur Road Bike Folding Bicycle 3503 Bike Parts 3x9 Speed Original Derailleur 31.8mm 34.9mm - Bicycle Brake - AliExpress](https://ae01.alicdn.com/kf/Hdc6a4c3763ac4509a5cebbdd2afa08713/Brand-New-SORA-FD-3503-Front-Derailleur-Road-Bike-Folding-Bicycle-3503-Bike-Parts-3X9-Speed.jpg)
Shimano Sora Fd-3503 Front Derailleur Road Bike Folding Bicycle 3503 Bike Parts 3x9 Speed Original Derailleur 31.8mm 34.9mm - Bicycle Brake - AliExpress
![SHIMANO SORA 3503 Road Bike Bicycle Front Derailleur 3X9 Speed Original Derailleur 31.8mm _ - AliExpress Mobile SHIMANO SORA 3503 Road Bike Bicycle Front Derailleur 3X9 Speed Original Derailleur 31.8mm _ - AliExpress Mobile](https://ae01.alicdn.com/kf/Hffcb74224c4c4639a55402bc7aa95190b/SHIMANO-SORA-3503-Road-Bike-Bicycle-Front-Derailleur-3X9-Speed-Original-Derailleur-31-8mm.jpg)