That will be those licorice laces youve been using Bart - the original chain on mine lasted 20k the 525 DID VX i put on 10k ago still looks good with bugger all adjustment so far but it wasnt cheap (but mine is a white one). When this one is poked in 10k or sooner will switch to a 520 set up, from what i seen there is more choice on sprocket sizes and availability in bigger rears like 45s if ya wanna go that big. Get some good weelies then eh
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