Puleggia Deragliatore Posteriore Gabbia Carbonio Tenditore Catena Fissaggi Idler per Brompton 2s

It is good for a 2 speed or 6 speed brompton(2 cogs or 2 cogs x3 speeds)! The Brompton chain tensioner is one of the "essential" list of spare parts for Bromptons with a single rear sprochet and performs an important role in keeping the chain taut whether the bike is being ridden or in the folded/parked position.

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