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Shimano Tiagra SL-R440 R441 3x8 Speed Flat Bar Left + Right Shifter Set ROAD | Bunny Cycling
Shimano R440 Folding Road Bike 2/3×8 Speed Front Groupset FD-R440/R443 SL-R441 | eBay
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Are Shimano R440 road flat bar shifters compatible with a mountain bike front derailleur? - Quora
Shimano FD R443 R440 Road Bike Front Derailleur 8 Speed FD R443 Brand Mount 31.8 mm FD R440 Bike Parts FD R440 Bike Derailleur|Bicycle Derailleur| - AliExpress