You can't really see sprocket tooth wear until it's really bad. A few thousandths difference in pitch will accelerate chain wear. Unless it the sprockets were nearly brand spankin' new (which they obviously aren't), I'd replace them as a set - with a steel rear (eff aluminum for street use, especially non-hardened). And yes, rivet >> clip (clips can be made 'safer' by using a dab of silicone adhesive over it - but a rivet link is a sure thing).
|