Problem Solvers Chain Tensioner with Derailleur Hanger. Problem Solvers Chain Tensioner with HangerFor quick-release hubs use Surly adaptor (CH9996)Allows for the use of a derailleur on frames without derailleur hangersFor use with rear-facing horizontal d
Problem Solvers Chain Tensioner with Derailleur Hanger. Problem Solvers Chain Tensioner with Hanger
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