BESNIN 17° Bike Stem - 31.8mm x 60/70/90/110/130mm MTB Handlebar Stem for Mountain, Road & BMX Bikes | Durable Aluminum Alloy Cycling Component for Trail Riding, Commuting & Urban Cycling

Features: Made of aluminum alloy Lighter weight better toughness No deformation corrosion resistance Provide security for your outdoor travel Suit for MTB ,BMX, DH, downhill bicycles, fixed equipment, road bikes, etc. Read more 60mm stem compared to a phone with a height of 5.78 inches size: 17° 31.8*60mm . Handlebar center diameter: 31.8mm(1-1/4") ； Riser tube diameter: 28.6mm(1-1/8")； Length: 60mm； Degree:17° 90mm stem compared to a phone with a height of 5.78 inches size: 17° 31.8*90mm . Handlebar center diameter: 31.8mm(1-1/4") ； Riser tube diameter: 28.6mm(1-1/8")； Length: 90mm； Degree:17° 110mm stem compared to a phone with a height of 5.78 inches size: 17° 31.8*110mm . Handlebar center diameter: 31.8mm(1-1/4") ； Riser tube diameter: 28.6mm(1-1/8")； Length: 110mm； Degree:17° 130mm stem compared to a phone with a height of 5.78 inches size: 17° 31.8*130mm . Handlebar center diameter: 31.8mm(1-1/4") ； Riser tube diameter: 28.6mm(1-1/8")； Length: 130mm； Degree:17° 17° 31.8×60mm 17° 31.8×90mm 17° 31.8×110mm 17° 31.8×130mm (function(f) {var _np=(window.P._namespace("AplusModule"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { // register javascript with unique module id P.when("jQuery", "AplusModules-module-6", "ready").execute(function($, hoverModule) { hoverModule("aplus-module-6-2"); }); })); how to choose bike stem size31.8 or 25.4mm？ 1. If you can measure accurately, we recommend that you measure with a ruler Please measure the thickest part in the middle of bike handlebar 2. If you don't have any ruler in nearby, you can opt for a Cola lid . If it can easily pass through your old bike stem, your handlebar is 31.8mm, then please buy a 31.8mm stem (this link is 31.8mm) If the cover can't fit through your old stem, then your handlebar is 25.4mm, please buy a 25.4mm stem. 17° 31.8×60mm Click here 17° 31.8×70mm Click here 17° 31.8×90mm Click here 17° 31.8×110mm Click here 17° 31.8×130mm Click here fit for 31.8mm handlebar ✓ ✓ ✓ ✓ ✓ Length: 60mm 70mm 90mm 110mm 130mm Front fork stem diameter: 28.6mm 28.6mm 28.6mm 28.6mm 28.6mm Material: Aluminum alloy AL6061 T6 Aluminum alloy AL6061 T6 Aluminum alloy AL6061 T6 Aluminum alloy AL6061 T6 Aluminum alloy AL6061 T6