why?? the compound is not correct???

個人覺得越輕量的碟盤，洞就必須開得越多，相對的摩擦的面積也跟著減少
因此煞車力通常都會減弱

還有鋼性也會減弱，會有輪子軟軟的錯覺

假使不在意重量的話，很oldschool的那種最好用...  (看全文)

yep! they have been updated. Other than the longer lever though, i can't really spot any difference

trevor has been on his prototype frame for more than a year and a half. he has ridden more demo's in the last year than i have in my entire trials career. the production frame has thicker tubing as well, so it should last a...  (看全文)