This SL OCLV Mountain Carbon frame set is the ideal start to an obscenely lightweight cross country build;The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn’t get beaten up by trail chatter;Control Freak Cable Management allows you to run any combination of cables exactly the way you want, while still giving you sleek looks and protecting your cables against unnecessary wear;Boost148 spacing for 29″ wheels on all frame sizes except S, which has a 142×12 mm rear axle a