{"product_id":"bucklos-70mm-bike-stem-17-degree-negative-rise-31-8mm-mtb-road-bicycle","title":"BUCKLOS 70mm Bike Stem 17° Negative Rise 31.8mm MTB Road Bicycle","description":"\n\u003ch2\u003eBUCKLOS 70mm Ultralight Aluminum Bike Stem – 17° Negative Rise, 31.8mm Clamp\u003c\/h2\u003e\n\u003cp\u003eUpgrade your ride with the \u003cstrong\u003eBUCKLOS 70mm Bicycle Stem\u003c\/strong\u003e — a precision-engineered, ultralight aluminum alloy stem designed for both MTB and road bike enthusiasts. Featuring a \u003cstrong\u003e17-degree negative rise\u003c\/strong\u003e and a \u003cstrong\u003e31.8mm handlebar clamp diameter\u003c\/strong\u003e, this stem delivers confident handling, a secure fit, and an aerodynamic riding position. Whether you're tackling technical trails or logging miles on the tarmac, this stem is built to perform.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 70mm — ideal for precise front-end control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRise:\u003c\/strong\u003e 17° Negative — promotes a sporty, forward-leaning riding posture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandlebar Clamp Diameter:\u003c\/strong\u003e 31.1–32.5mm (compatible with standard 31.8mm bars)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFork Clamp Diameter:\u003c\/strong\u003e 28.6mm (fits most MTB and road bike forks)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 46–55mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-grade aluminum alloy — lightweight yet incredibly durable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo high-concern chemicals\u003c\/strong\u003e — safe and reliable construction\u003c\/li\u003e\n  \u003cli\u003eCompatible with \u003cstrong\u003eMTB, road bikes, gravel bikes\u003c\/strong\u003e, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose the BUCKLOS Bike Stem?\u003c\/h3\u003e\n\u003cp\u003eBUCKLOS is a trusted name in cycling components, combining quality engineering with competitive pricing. This stem is CNC-machined from aircraft-grade aluminum alloy, keeping weight to a minimum without sacrificing strength or stiffness. The four-bolt faceplate provides even clamping force across your handlebars, while the secure fork clamp ensures rock-solid steering at all times.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBUCKLOS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eRise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e17° Negative\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eHandlebar Clamp Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e31.1–32.5mm (31.8mm standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eFork Clamp Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e28.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e46–55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePlease Note\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePhotos may vary slightly in color due to lighting conditions and monitor settings.\u003c\/li\u003e\n  \u003cli\u003eMinor size variations (±1–2mm) may occur due to manual measurement methods.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more cycling and outdoor accessories? Check out our \u003ca href=\"\/products\/2m-light-stand-folding-telescoping-tripod-adjustable-photography-floor-lamp-holder-tripod-for-outdoor-picnics-camping-hiking\"\u003e2m Folding Telescoping Tripod for Outdoor Activities\u003c\/a\u003e or explore our \u003ca href=\"\/products\/1pc-sheath-fold-knife-plier-bag-pouch-case-sheath-belt-loop-pocket-carry-storage-flashlight-holder-waist-pack\"\u003eSheath Fold Knife Plier Bag for Trail Rides\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/health.gov\/moveyourway\" target=\"_blank\" rel=\"noopener\"\u003eHHS Move Your Way physical activity guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the BUCKLOS 70mm bike stem compatible with my road bike or MTB handlebars?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The BUCKLOS bike stem features a 31.1–32.5mm handlebar clamp diameter, making it fully compatible with standard 31.8mm road bike and MTB handlebars. The 28.6mm fork clamp fits most standard road and mountain bike forks.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the 17-degree negative rise mean for my riding position?\u003c\/h4\u003e\n\u003cp\u003eA: A 17-degree negative rise means the stem angles downward from the fork steerer, lowering your handlebar position relative to the fork. This promotes a more aggressive, aerodynamic forward-leaning posture — popular with road cyclists and performance-oriented mountain bikers.\u003c\/p\u003e\n\u003ch4\u003eQ: What material is this bike stem made from, and how durable is it?\u003c\/h4\u003e\n\u003cp\u003eA: The BUCKLOS bike stem is CNC-machined from high-grade aluminum alloy, offering an excellent balance of low weight and high strength. It is built to withstand the rigors of both trail riding and road cycling over the long term.\u003c\/p\u003e\n\u003ch4\u003eQ: Will this stem fit my bike's steerer tube?\u003c\/h4\u003e\n\u003cp\u003eA: This stem is designed for a 28.6mm (1-1\/8 inch) fork steerer tube, which is the most common standard size on modern road, gravel, and mountain bikes. Please verify your fork's steerer tube diameter before purchasing.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the BUCKLOS 70mm bike stem compatible with my road bike or MTB handlebars?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The BUCKLOS bike stem features a 31.1–32.5mm handlebar clamp diameter, making it fully compatible with standard 31.8mm road bike and MTB handlebars. 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