Broken_777 yes no worries- I got it because it holds the chain round the rear sprocket more than single pulley types - and prevents chain jump - also beautifully engineered. Cheers, Si
@Si46 started
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Broken_777 yes no worries- I got it because it holds the chain round the rear sprocket more than single pulley types - and prevents chain jump - also beautifully engineered.
Cheers, Si