{"product_id":"bucklos-negative-bike-stem-17-degree-70mm-aluminum-alloy-mtb-handlebar","title":"BUCKLOS 70mm -17° Negative MTB Bike Stem | Aluminum Alloy","description":"\n\u003ch2\u003eBUCKLOS 17° Negative Bike Stem – 70mm Aluminum Alloy MTB Handlebar Stem\u003c\/h2\u003e\n\u003cp\u003eUpgrade your mountain bike's cockpit with the \u003cstrong\u003eBUCKLOS Negative Bike Stem\u003c\/strong\u003e. Engineered at a \u003cstrong\u003e-17 degree angle\u003c\/strong\u003e with a \u003cstrong\u003e70mm length\u003c\/strong\u003e, this stem positions your handlebars for a more aggressive, performance-focused riding posture. Built from \u003cstrong\u003ehigh-strength aluminum alloy\u003c\/strong\u003e with a hollow design, it delivers an impressive strength-to-weight ratio — weighing in at just approximately \u003cstrong\u003e178.9g\u003c\/strong\u003e. Compatible with the majority of mountain bikes, this is a reliable, precision-machined upgrade for serious riders.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e BUCKLOS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAngle:\u003c\/strong\u003e -17 Degrees (Negative)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 70mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSteerer Tube (Fork Clamp) Diameter:\u003c\/strong\u003e 28.6mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandlebar Clamp Diameter:\u003c\/strong\u003e 31.8mm (fits 31.1–32.5mm range)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~178.9g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLogo Color:\u003c\/strong\u003e White \/ Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Bicycle Handlebar Stem\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose the BUCKLOS Negative Stem?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight Hollow Design:\u003c\/strong\u003e The carefully engineered hollow construction reduces weight without sacrificing structural integrity — perfect for cross-country and trail riding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e The 28.6mm fork clamp and 31.8mm handlebar clamp diameter cover the vast majority of modern MTB setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Strength Aluminum Alloy:\u003c\/strong\u003e CNC-machined for a precise fit and a clean, durable finish that stands up to trail conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAggressive -17° Angle:\u003c\/strong\u003e Lowers the front end of your bike for improved aerodynamics and a more engaged riding position on descents and technical terrain.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Straightforward bolt-on installation compatible with most standard mountain bike forks and handlebars.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × BUCKLOS Negative Bicycle Handlebar Stem (70mm, -17°)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Product images may vary slightly in colour due to photographic lighting and monitor settings. Minor dimensional variances of ±1–2mm may occur due to manual measurement methods.\u003c\/p\u003e\n\n\u003ch3\u003eComplete Your Bike Build\u003c\/h3\u003e\n\u003cp\u003eLooking for more cycling and outdoor accessories? Check out these related items in our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/2m-light-stand-folding-telescoping-tripod-adjustable-photography-floor-lamp-holder-tripod-for-outdoor-picnics-camping-hiking\"\u003e2m Folding Telescoping Tripod – Great for Outdoor Adventures\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-sheath-fold-knife-plier-bag-pouch-case-sheath-belt-loop-pocket-carry-storage-flashlight-holder-waist-pack\"\u003eSheath Belt Loop Pouch – Carry Storage for Outdoor \u0026amp; Trail Use\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\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: What handlebar diameter is the BUCKLOS 70mm negative stem compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The BUCKLOS negative bike stem is designed to fit handlebars with a clamp diameter of \u003cstrong\u003e31.8mm\u003c\/strong\u003e (compatible with 31.1–32.5mm range), which is the standard size for most modern mountain bike handlebars.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What fork steerer tube size does this MTB stem fit?\u003c\/h4\u003e\n\u003cp\u003eA: This stem is designed for a \u003cstrong\u003e28.6mm steerer tube diameter\u003c\/strong\u003e, which is the standard 1-1\/8\" threaded or threadless fork size found on the majority of mountain bikes.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does a -17 degree (negative) stem angle mean for my ride?\u003c\/h4\u003e\n\u003cp\u003eA: A negative 17-degree stem angle means the stem angles \u003cstrong\u003edownward\u003c\/strong\u003e from the steerer tube, lowering the handlebar height relative to the fork. This creates a more aggressive, aerodynamic riding position that is favoured for trail and cross-country mountain biking where control and speed are priorities.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How much does this bike stem weigh?\u003c\/h4\u003e\n\u003cp\u003eA: The BUCKLOS 70mm aluminum alloy bike stem weighs approximately \u003cstrong\u003e178.9 grams\u003c\/strong\u003e, thanks to its hollow construction and lightweight aluminum alloy material — keeping your build light without compromising strength.\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\": \"What handlebar diameter is the BUCKLOS 70mm negative stem compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The BUCKLOS negative bike stem is designed to fit handlebars with a clamp diameter of 31.8mm (compatible with 31.1–32.5mm range), which is the standard size for most modern mountain bike handlebars.\"}}, {\"@type\": \"Question\", \"name\": \"What fork steerer tube size does this MTB stem fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This stem is designed for a 28.6mm steerer tube diameter, which is the standard 1-1\/8\\\" threaded or threadless fork size found on the majority of mountain bikes.\"}}, {\"@type\": \"Question\", \"name\": \"What does a -17 degree (negative) stem angle mean for my ride?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A negative 17-degree stem angle means the stem angles downward from the steerer tube, lowering the handlebar height relative to the fork. This creates a more aggressive, aerodynamic riding position that is favoured for trail and cross-country mountain biking where control and speed are priorities.\"}}, {\"@type\": \"Question\", \"name\": \"How much does this bike stem weigh?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The BUCKLOS 70mm aluminum alloy bike stem weighs approximately 178.9 grams, thanks to its hollow construction and lightweight aluminum alloy material — keeping your build light without compromising strength.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"BUCKLOS 70mm -17° Negative MTB Bike Stem | Aluminum Alloy\", \"item\": \"https:\/\/x1davz-b4.myshopify.com\/products\/bucklos-negative-bike-stem-17-degree-70mm-aluminum-alloy-mtb-handlebar\"}]}\u003c\/script\u003e","brand":"Nixie","offers":[{"title":"White logo","offer_id":67582935236707,"sku":"1005006365276005-White logo","price":43.59,"currency_code":"USD","in_stock":true},{"title":"Black logo","offer_id":67582935269475,"sku":"1005006365276005-Black logo","price":44.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/2047\/6003\/files\/S3c83df4592be4f86b9d4c0321e90e9276.webp?v=1790531458","url":"https:\/\/nixiehaven.com\/products\/bucklos-negative-bike-stem-17-degree-70mm-aluminum-alloy-mtb-handlebar","provider":"Nixie","version":"1.0","type":"link"}