The 1.1mm x 2500mm derailleur cable is very reliable and durable. Manufactured with a core of 6 central cables arranged in a circle and surrounded by 12 peripheral cables.
The ratios are less irregular and the cable suffers less friction.
smooth inner cable to minimize friction and shift smoothness
MTB Tandem Racing Derailleur Wire Diameter 1.1 * 2500mm
The only one with an extra length of 2.5m
Top Speedy eBike reliability and resistance