Idler set 50 mm for the return chain (Nazca)

Idler set for the return chain, consisting of: idler 50 mm, black coated aluminum cover, stainless steel mounting material.

An extra idler in the return chain of a recument bike reduces the friction in the chain tubes, this set is used on nearly all Nazca bikes.

Idler with sealed ballbearing (6 mm hole) and O-ring.