julio 26, 2026
SwishTi Narrow-Wide Rear Derailleur Bicycle Oversized Pulley. Weight: approx.12g(12T) / 15g(14T) / 16g(16T). Each tooth alternates thickness, narrow wide narrow wide, all the way around the pulley. The narrow wide pulley now mates seamlessly with the chain, almost locking the chain to the ring without much increase in drag.