{"product_id":"lunje-adjustable-bike-stem-31-8mm","title":"LUNJE adjustable bike stem 31.8mm, Matte Black 145mm, 6061-T6 aluminum, 120° adjustable angle","description":"\u003cp\u003e\u003cstrong\u003eThe LUNJE Adjustable Bike Stem 31.8mm is a lightweight, 6061-T6 aluminum handlebar stem that lets you change reach and angle up to 120° across four lengths for better control and comfort on mountain, road, and city bikes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis adjustable stem gives riders one component to tune posture and handling without swapping bars or forks. Engineered around a 31.8mm handlebar clamp and a 28.6mm (1-1\/8\") steerer interface, the LUNJE stem balances durability and weight for everyday commuting, long road miles, or trail use. Available in 90, 110, 130, and 145mm lengths, it offers a broad fit range so you can dial in steering behavior and body position quickly and securely.\u003c\/p\u003e\n\n\u003ch3\u003eHow does changing stem length and angle affect handling?\u003c\/h3\u003e\n\u003cp\u003eAltering stem length shifts your weight distribution and steering leverage. Shorter stems quicken steering response and boost maneuverability on technical trails, while longer stems straighten the steering arc and increase stability at speed. The adjustable angle lets you fine-tune back and wrist posture without changing saddles or bars.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eShorter (90mm): faster steering, nimble cornering.\u003c\/li\u003e\n  \u003cli\u003eMedium (110–130mm): balanced control for mixed terrain.\u003c\/li\u003e\n  \u003cli\u003eLong (145mm): improved straight-line stability at higher speeds.\u003c\/li\u003e\n  \u003cli\u003e120° angular adjustment: customize upright vs. aggressive reach.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this stem fit my bike and handlebars?\u003c\/h3\u003e\n\u003cp\u003eThe LUNJE stem is made to accept 31.8mm handlebars and fits standard 28.6mm (1-1\/8\") steerer tubes, so it covers most modern MTBs, gravel and many road bikes. Confirm your handlebar clamp diameter and steerer tube size before ordering. Use the supplied clamp hardware and torque to the manufacturer’s recommendations for safe installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHandlebar clamp: 31.8mm standard size.\u003c\/li\u003e\n  \u003cli\u003eSteerer fit: 28.6mm (1-1\/8\") steerers.\u003c\/li\u003e\n  \u003cli\u003eFour length choices: 90, 110, 130, 145mm to match reach needs.\u003c\/li\u003e\n  \u003cli\u003eHardware included for secure mounting; torque spec recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and build features ensure durability?\u003c\/h3\u003e\n\u003cp\u003eConstructed from 6061-T6 aluminum, this stem offers a strong-to-weight ratio suited to off-road impacts and daily road use. The finish is corrosion-resistant and machining keeps clamp contact precise to prevent slippage. The design also distributes force to reduce localized stress on the bars and steerer.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e6061-T6 aluminum body for toughness and light weight.\u003c\/li\u003e\n  \u003cli\u003ePrecision-milled clamp surfaces for secure grip without damage.\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant finish for longevity in varied conditions.\u003c\/li\u003e\n  \u003cli\u003eAnti-slip grip design to reduce handlebar rotation under load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow simple is installation and angle adjustment?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic bike mechanics: loosen the faceplate and steerer bolts, set desired length and angle, then re-tighten to spec. Angle adjustment is tool-based and stable under riding loads, so once tightened the position remains reliable. If you switch between bikes, the universal clamp sizes make transfer quick.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTool-required setup—standard hex wrenches handle the job.\u003c\/li\u003e\n  \u003cli\u003eAngle adjustable up to 120° for posture dialing.\u003c\/li\u003e\n  \u003cli\u003eStable clamp design prevents slippage after torqueing bolts.\u003c\/li\u003e\n  \u003cli\u003eCompatible across many bike types for easy swaps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Cyclists who want one stem to cover multiple riding styles — mountain bikers seeking sharper handling, commuters wanting a more upright stance, or road riders looking for a tailored reach. Choose the length that matches your frame and riding goals, and use the angle adjustment to refine comfort and control without replacing multiple parts.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the LUNJE stem fit carbon handlebars?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits 31.8mm diameter bars; if your carbon bars are 31.8mm use a torque wrench and carbon-safe paste per manufacturer guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I swap this between multiple bikes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—31.8mm clamp and 28.6mm steerer compatibility make it easy to move between many MTB, gravel, and city bikes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"LUNJE","offers":[{"title":"Default Title","offer_id":48021020147873,"sku":"B0F1T9PTWK","price":71.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/lunge-front-profile-stem-mounted.jpg?v=1791305555","url":"https:\/\/canadiansporting.ca\/products\/lunje-adjustable-bike-stem-31-8mm","provider":"Canadian Sporting","version":"1.0","type":"link"}