SRAM GX 7v MTB Bike kit DH Downhill Kit 7-speed GX Gear Shifter Rear Derailleur Flywheel 11-25 chain PC1110 foldable bicycle

SRAM GX 7v MTB Bike kit DH Downhill Kit 7-speed GX Gear Shifter Rear Derailleur Flywheel 11-25 chain PC1110 foldable bicycle

Aliexpress UK