CONTROLTECH品牌是1989年由一群單車愛好者在美國西雅圖創立,致力於研並提供騎乘者最好的產品。 1990年專注登山車相關的零配件,2000年後延伸產品線至公路車、計時車及三鐵車的領域。 Durable stem constructed from 6061 aluminum, which comprises aluminum, magnesium and silicone. This combination is proven to increase strength to maximise every ounce of energy, while reducing weight for faster cycling. Correct stem length is vital for comfortable bike position and good handling. That’s why the Cougar Stem comes in four sizes, from 90mm up to 120mm. 5° drop steers you into an aerodynamic and sustainable position. You can add spacers beneath or above the stem to further personalise your upfront bike set-up. Fits 28.6mm steerers and 31.8mm bar clamps. Weighs 182g for the 110mm option.