Coming in as the lighter of Reserve's two rims for trail riding, the 30 SL 29in Carbon Rim is perfect for spritely short-travel MTB builds and mid-travel bruisers alike. With a rim weight of 440g, it offers greater tolerance of abuse than the XC Reserve wheels, without suffering from the added weight penalty of the enduro-ready 30 HD's. Santa Cruz's carbon layup yields a reactive feel on flow trails, yet solid compliance and vibration damping characteristics when the day calls for steep, rocky descents.