bike stem 31.8 × 45mm wake mountain bike stem bicycle handlebar stem suitable for bmx mtb road bike (aluminum alloy, adjustable, black) wake <p><b>specification:</b><br /> handlebar center diameter: 31.8mm (1-1/4")<br /> tube diameter: 28.6mm (1-1/8")<br /> length: 45mm<br /> weight: 130g<br /> color: matt black<br /> size: 31.8*28.6*45mm<br /> style: high intensity stem<br /> material: aluminum alloy al6061 t6</p> <p><b>package include:</b><br /> 1* <b>bike stem</b></p> <p><b>faq</b>:<br /> q: will the<b> bike stem</b> fit for mountain bikes, road bike, mtb, bmx etc?<br /> a: as long as the bar's diameter at the center where it has to attach to the stem is around 31.8mm, it should fit. check your tube diameter too, it should be 1 and 1/8 inches.</p> <p>q: what size is the tube and handbar? <br /> a: tube diameter: <b>28.6mm (1-1/8")</b>, handlebar center diameter:<b> 31.8mm (1-1/4")</b></p> <p>q: what is the height of the <b>bike stem</b>?<br /> a: <b>45mm</b> (center distance of the two holes)</p><p><b>add the bike stem to your cart, have a great ride experience</b></p>