LUNJE Mountain Bike Bicycle Stem Riser, Fork Riser, Headset Extender, Bicycle Accessories OEM Manufacturer

LUNJE MTB Bike Fork Stem Extender 🌟 Handlebar Riser Adapter 28.6mm Steerer 90/115/150/180/210mm Height Quick-Install Design ⚙ Key Features & Innovations: ✔ Ultra-Strong & Lightweight – CNC-machined from aerospace-grade AL 6061-T6 aluminum for optimal strength-to-weight ratio. ✔ Precision Fit – Compatible with 28.6mm steerer tubes (common for MTB, gravel, and hybrid bikes). ✔ Adjustable Riding Comfort – Multiple height options (90/115/150/180/210mm) to customize handlebar position for ergonomic control. ✔ Tool-Free Quick Installation – Securely clamps onto your fork steerer for hassle-free setup. ✔ Sleek & Durable Finish – Anodized surface resists corrosion and scratches (available in multiple colors). ✔ Minimalist Weight – Just 167g (115mm model)—adds minimal bulk while improving ride posture. 💡 Why Choose LUNJE? • OEM/ODM Specialist – Trusted by leading bike brands for high-performance components. • Rigorous QC Standards – Every stem extender is stress-tested for safety and durability. • Customization Ready – Offer branding, colors, and bulk pricing for resellers. 🏆 Perfect For: • MTB, Enduro, Gravel, and Commuter Bikes • Riders seeking a more upright, comfortable position • Quick handlebar height adjustments without changing stems 📩 Get Yours Today! 📧 Email: georgechen@koofbicycle.com 📱 WhatsApp: +86 13798419681 🌐 💬 "Already using our stem riser? Share your experience below!" 🚴 Tag us in your setup—we love seeing LUNJE parts in action! #StemRiser #HandlebarRiser #MTBAccessories #BikeComfort #UpgradeYourRide #6061Aluminum #OEMBikeParts #MTBUpgrades #CyclingErgonomics #BikeFit #GravelBike #EnduroReady #RideHigher #BikeTech

LUNJE MTB Adjustable Stem New Design Bicycle Handlebar Stem Source Factory Plus or Minus 80 Degrees

Adjustable stem XT-A822 Material: AL 6061-T6 Caliber: 31.8mm Length: 90/110/130/ 145mm (optional) Angle: 0~85° (optional) Color:Black/Purple anodized Surface Feature: 3D forging process Steerer: 28.6mm

LUNJE A001 3D Forged MTB Stem 31.8mm | ±10 17 25 35 Degree Mountain Bike Riser Stem | 60-110mm Lightweight Hollow Stem | Factory OEM Bulk Price

XT-A001D 💡 Precision Engineering: 3D Forged 6061 Aluminum Alloy bike stem, Versatile Specifications: Angles and Sizes for Every Rider, LUNJE Factory B2B Services: OEM & Custom Branding, Specification Details Model Number LUNJE A001 Material AL6061-T6 Aluminum Alloy Barbore (Clamp) 31.8mm (Standard MTB/Road) Steerer Diameter 28.6mm (1-1/8") Lengths Available 60mm / 70mm / 80mm / 90mm / 100mm / 110mm Angles ±10°, ±17°, ±25°, ±35° Surface Finish Sandblasted Anodized (Black) Through continuous process innovation and collaboration with top brands, we deliver high-end products tailored to your niche market—ensuring your long-term value and brand premium. Check out new models designed for your specific needs. We are your trusted OEM partner 💐E-mail‌: georgechen@koofbicycle.com; ‌ 🚴WhatsApp‌: +86 13798419681; Best regards

LUNJE mountain bike stem OEM factory hollow integrated column downhill short stem 31.8*45mm bicycle accessories

Classic Bestselling Model: XT-A089 Material: Aluminum Alloy Features: CNC Machining Specifications: 31.8*45mm Through continuous process innovation and collaboration with top brands, we deliver high-end products tailored to your niche market—ensuring your long-term value and brand premium. Check out new models designed for your specific needs. We are your trusted OEM partner 💐E-mail: georgechen@koofbicycle.com; 🚴WhatsApp: +86 13798419681; Best regards

LUNJE 31.8 Mountain Bike Stem Aluminum Forging Roadbike Parts 35mm Super Light Adjustable Riser Bicycle Stem

Adjustable Stem XT-A820 Material: AL 6061-T6 Caliber: 25.4/ 31.8mm Ext length: 90/100/ 110mm (optional) Adjustable Angle: 0~60° (optional) Color:Black/Purple anodized Surface Feature: 3D forged Steerer: 28.6mm Height: 35mm

LUNJE Special Offer Mountain Road Bike Riser Ultra Light Aluminum Alloy 7 Degrees 25.4/31.8mm Plus and Minus Angle 3D forged Stem OEM Manufacturer

3D forged Bicycle stem XT-A007D Material: AL 6061-T6 Caliber: 25.4mm（31.8option） Length: 50/60/70/80mm (optional) Angle: 7° Color: Matte black anodized Feature: 3D forging process Steerer: 28.6mm Height: 40mm Through continuous process innovation and collaboration with top brands, we deliver high-end products tailored to your niche market—ensuring your long-term value and brand premium. Check out new models designed for your specific needs. We are your trusted OEM partner 💐E-mail‌: georgechen@koofbicycle.com; ‌ 🚴WhatsApp‌: +86 13798419681; Best regards

LUNJE Original Bike Stem: 31.8mm CNC Ultra-Light Hollow Alloy Dual-Color Factory OEM Direct

XT-A015B 🏆 Technical Specifications: CNC Bicycle Stem 🛠️ Engineered for Performance, Built for Style. This professional-grade MTB stem combines aerospace-grade materials with precision 5-axis CNC machining to deliver the ultimate cockpit control. Key ParameterSpecification Details 🆔 Model NumberLUNJE XT-A015B (Original Design) 💎 Premium MaterialAL 6061-T6 Aerospace Aluminum Alloy ⚙️ Process TechFull CNC Machined & Hollow-Out Design 📏 Extension Length35mm (Optimized for Enduro/Trail) ⭕ Handlebar Caliber31.8mm (Universal Standard) 📐 Rise Angle0° Zero Rise for Aggressive Control 🍴 Steerer Tube28.6mm (1-1/8") 🏗️ Stack Height42mm ⚖️ Ultra-light WeightApprox. 124g 🎨 Finish Options10 Anodized Colors (Monochromatic / Two-tone Gradient / Iridescent Oil Slick) Through continuous process innovation and collaboration with top global cycling brands, we deliver high-end bicycle components tailored to your niche market. Our mission is to ensure your long-term market value and brand premium. Check out new models designed for your specific needs. We are your trusted OEM partner 💐E-mail‌: lunje.bicycle@gmail.com ‌

LUNJE Adjustable Suspension Stem OEM factory 31.8mm Shock Absorber Bike Stems for Mountain/Gravel/Road upgrade Lightweight Aluminum HandlebarStem OEM direct Bicycle Accessories

3D forged XT-A829🚵 Adjustable Suspension Stem 31.8mm Shock Absorber Bike Stem for MTB/Gravel/Road Lightweight 6061-T6 Aluminum OEM Direct 🚀 LUNJE Suspension Stem Conquer Rough Terrain with Pro-Level Vibration Damping 💎 Key Innovations: ✓ Smart Suspension System – Soft/Hard spring options absorb 30% trail vibrations, ✓ Aerospace Engineering – 3D-forged 6061-T6 aluminum with 40% increased strength-to-weight ratio, ✓ Multi-Angle Adjustment – 0-60° customizable rise for perfect fitment, ✓ All-Bike Compatibility – Fits 28.6mm steerer tubes (MTB/Gravel/Road), 🔧 Technical Specs: • Material: 3D-forged AL 6061-T6 • Clamp Diameter: 31.8mm • Length Options: 60/70/80/90/100/110mm • Steerer: 28.6mm • Color: Black/Purple anodized 🔥 Pro Rider Approved: "Our team reduced arm fatigue by 45% on Paris-Roubaix cobbles with LUNJE Harmonic Damping stems" 🏭 OEM/ODM Services: ✓ Custom length/angle combinations ✓ Laser engraving ✓ Spring rate customization ✓ MOQ 50 units 📩 Limited Engineering Support: 👉 First 10 inquiries: Free vibration test video, 📞 Contact Our Tech Team: 📧 Email: georgechen@koofbicycle.com 📱 WhatsApp: +86 13798419681 🌐 Full Tech Pack: https://en.koofbike.com/Product_detail/15.html 💬 Rider Testimonial: "Zero wrist pain since switching to LUNJE – game changer for endurance races!" @GravelExplorer 🎯 Engineer Notes: • Compatible with 99% of 28.6mm steerer forks • Spring replacement recommended every 5,000km ⚠️ Warning: May cause intentional detours to rough terrain! 🏷️ Trending Hashtags: #SuspensionStem #VibrationDamping #GravelBikeUpgrade #3DForged #AdjustableStem #ProCyclingTech #MTBComfort #OEMComponents #EnduroEssentials #ParisRoubaixTested #BikeSuspension

LUNJE CNC-Textured Hollow Forged MTB Stem OEM Supplier & Manufacturer 31.8mm handlebar short stem OEM Direct Lightweight bicycle stems with Optimized handling Industrial Aesthetics Meets Stable Riding for All-Mountain/Downhill/Enduro bike stem

XT-A027🚴 CNC Short Stem 45mm CNC Aluminum Alloy 31.8mm Lightweight Hollow aerodynamic Design Agile handling All-Mountain biking​​ Downhill​​ Enduro Climbing ​Improved stability  Lower center of gravity; 🚀 LUNJE CNC-Textured MTB Stem – Precision Engineered for Aggressive Riding, 💎 Key Innovations: ✓ Ultra-Light & Durable – Hollow forged 6061-T6 aluminum with CNC-textured finish for enhanced grip and stiffness. ✓ Optimized Handling – Short stem design (31.8mm) for razor-sharp steering control in All-Mountain/Downhill/Enduro. ✓ Industrial-Grade Strength – Reinforced clamping area ensures maximum stability under heavy loads. ✓ Sleek & Functional – Matte CNC-machined surface resists scratches while complementing high-end builds. 🔥 Why Choose LUNJE? 🚴🏼‍♀Designed for riders who demand instant response and unshakable control on technical trails. 🛠Perfect for OEM brands seeking high-performance, customizable stems with a rugged aesthetic. 🏭 OEM/ODM Solutions: ✓ Multiple lengths & clamp sizes ✓ Custom laser engraving ✓ Bulk pricing for brands, ✓ Rigorous QC testing for impact & fatigue resistance, 📩 Get Your Custom Quote Today! 📧 Email: georgechen@koofbicycle.com 📱 WhatsApp: +86 13798419681 🌐 Website: https://en.koofbike.com/ 💬 "Already using our stem ? Share your experience below!" 🚴 Tag us in your setup—we love seeing LUNJE parts in action! 🏷️ Trending Hashtags: #MTBStem #ShortStem #DownhillReady #EnduroBike #CNCForged #LUNJEStem #OEMSupplier #BikeTechUpgrade #handlebarStem #IndustrialDesign #RideHarder #CustomComponents #CNCStem #EnduroReady #6061T6 #LightweightStem #BikeUpgrade #GravelBike #AnodizedLuxury

LUNJE Ultra Light High-Strength MTB Stem OEM Manufacturer 1-Piece Forged CNC Aluminum with Titanium Bolts Zero Flex Design for Downhill/Enduro/DH Anodized Bicycle Stem Bulk Supplier for Bike Brands & Shops

XT-A030High-Strength Design with Titanium Alloy Screws – Premium CNC-Machined Bicycle Stem for Extreme Riding, Rainbow Anodized Finish One-piece molding Zero-Flex Durable & Stylish for MTB, DH, BMX & Enduro Lightweight 145g Ultra-Light; 🚀 LUNJE CNC-Textured MTB Stem – Precision Engineered for Aggressive Riding, 💎 Key Innovations: ✓ Ultra-Light & Durable – Hollow forged 6061-T6 aluminum with CNC-textured finish for enhanced grip and stiffness. ✓ Optimized Handling – Short stem design (31.8mm) for razor-sharp steering control in All-Mountain/Downhill/Enduro. ✓ Industrial-Grade Strength – Reinforced clamping area ensures maximum stability under heavy loads. ✓ Sleek & Functional – Matte CNC-machined surface resists scratches while complementing high-end builds. 🔥 Why Choose LUNJE? 🚴🏼‍♀Designed for riders who demand instant response and unshakable control on technical trails. 🛠Perfect for OEM brands seeking high-performance, customizable stems with a rugged aesthetic. 🏭 OEM/ODM Solutions: ✓ Multiple lengths & clamp sizes ✓ Custom laser engraving ✓ Bulk pricing for brands, ✓ Rigorous QC testing for impact & fatigue resistance, 📩 Get Your Custom Quote Today! 📧 Email: georgechen@koofbicycle.com 📱 WhatsApp: +86 13798419681 🌐 Website: https://en.koofbike.com/ 💬 "Already using our stem ? Share your experience below!" 🚴 Tag us in your setup—we love seeing LUNJE parts in action! 🏷️ Trending Hashtags: #MTBStem #ShortStem #DownhillReady #EnduroBike #CNCForged #LUNJEStem #OEMSupplier #BikeTechUpgrade #handlebarStem #IndustrialDesign #RideHarder #CustomComponents #CNCStem #EnduroReady #6061T6 #LightweightStem #BikeUpgrade #GravelBike #AnodizedLuxury

35mm Clamp MTB Stem Ultra-Stiff & Lightweight CNC Aluminum Short Handlebar Stems Aggressive geometry Titanium screws Zero-Flex construction for DH/Enduro/BMX/FR/XC, OEM Manufacturer LUNJE for 31.8 Stem upgrade

XT-A031🚀 LUNJE Aggressive Geometry MTB Stem – Precision Engineered for Aggressive Riding Maximum Stiffness Stealth Black Aluminium One-piece molding with Titanium Hardware Screws Zero-Flex Durable & Stylish for MTB, DH, BMX & Enduro； 💎 Key Innovations: ✓ Ultra-Light & Durable. ✓ Optimized Handling – Short stem design. ✓ Industrial-Grade Strength ensures maximum stability under heavy loads. ✓ Sleek & Functional – Matte CNC-machined surface resists scratches. 🔥 Why Choose LUNJE? 🚴🏼‍♀Designed for riders who demand instant response and unshakable control on technical trails. 🛠Perfect for OEM brands seeking high-performance, customizable stems with a rugged aesthetic. 🏭 OEM/ODM Solutions: ✓ Multiple lengths & clamp sizes ✓ Custom laser engraving ✓ Bulk pricing for brands, ✓ Rigorous QC testing for impact & fatigue resistance, 📩 Get Your Custom Quote Today! 📧 Email: georgechen@koofbicycle.com 📱 WhatsApp: +86 13798419681 🌐 Website: https://en.koofbike.com/ 💬 "Already using our stem ? Share your experience below!" 🚴 Tag us in your setup—we love seeing LUNJE parts in action! 🏷️ Trending Hashtags: #MTBStem #ShortStem #LUNJEStem #OEMSupplier

LUNJE 5-Axis CNC Stem: 3D Sculpted Texture 35mm Ultra Short Stem for MTB DH Enduro Premium 31.8mm Aluminum Alloy Lightweight Bikestems OEM Manufacturer Aesthetics

XT-A032 🚴 35mm Ultra-Short Innovative Stem lightweight hollow structure Ultimate Control Precision 5-axis CNC machined 3D dynamic tiger stripe reduces wind resistance multi-angle refraction upgrade anodization bike industrial aesthetics for MTB DH BMX & Enduro; 🚴Key Innovations: ▸ 35mm ultra-short center (instant steering response), ▸ 5-axis CNC machined from T6 aluminum, ▸ Patent-pending 3D tiger stripe aerodynamics, ▸ Military-grade gradient anodization, ▸ 150g optimized hollow design, 🚴Performance Benefits: ✓ 18% faster steering input， ✓ 15% reduced wind resistance， ✓ 800HV surface hardness， ✓ UCI-certified for pro racing， 🚴Built For Champions In: • Downhill • Enduro • BMX • Technical Trail. 🔥 Why Choose LUNJE? 🚴🏼‍♀Designed for riders who demand instant response and unshakable control on technical trails. 🛠Perfect for OEM brands seeking high-performance, customizable stems with a rugged aesthetic. 🏭 OEM/ODM Solutions: ✓ Multiple lengths & clamp sizes ✓ Custom laser engraving ✓ Bulk pricing for brands, ✓ Rigorous QC testing for impact & fatigue resistance, 📩 Get Your Custom Quote Today! 📧 Email: georgechen@koofbicycle.com 📱 WhatsApp: +86 13798419681 🌐 Website: https://en.koofbike.com/Product_detail/43.html 💬 "Already using our stem ? Share your experience below!" 🚴 Tag us in your setup—we love seeing LUNJE parts in action! 🏷️ Trending Hashtags: #MTBStem #ShortStem #LUNJEStem #OEMSupplier

LUNJE Forged MTB Stem 45mm OEM High-Strength Aluminum Short Stem, 31.8mm Handlebars, 1-1/8" Steerer, Lightweight for Downhill Enduro

XT-A109 🏭 OEM CUSTOMIZATION: Maximize safety and minimize weight with our one-piece forged construction. Without welds or joints, this stem offers superior strength and rigidity for aggressive riding. Features a precision 28.6mm steerer clamp for a perfect fit on most modern MTBs. Short stems make the steering direct and immediate Built to handle the demands of DH and Enduro racing Freeride.

LUNJE ±15° duotone gradient Bicycle Stem OEM Lightweight Aluminum Alloy Forged 31.8mm Rainbow Short Stem for MTB, Downhill & Climbing - Front Fork Caliber 28.6mm Compatible

XT-A012 ✅ Lightweight & Durable: Crafted from forged aluminum alloy, this stem offers exceptional strength and rigidity while minimizing weight, perfect for aggressive riding. ✅ ±15° Angle Adjustment: Provides versatile positioning for optimized comfort and control, whether for aggressive downhill descents or efficient climbing. ✅ Striking Aesthetic: Features a unique duotone rainbow gradient finish, adding a bold and stylish look to your mountain bike. ✅ Precision Fit: Designed with a 31.8mm handlebar clamp and compatible with a standard 28.6mm (1-1/8") front fork steerer tube, ensuring a secure and reliable connection. ✅ Versatile Application: The ideal upgrade stem for MTB, enduro, downhill, trail, and all-mountain bicycles, enhancing handling and performance on any terrain.

Lunje CNC MTB Stem 45mm Short High-Strength Aluminum Bicycle Handlebar Stem for Road Bike, Racing, Downhill & MTB 28.6mm Fork Compatible 31.8mm Lightweight 130g two color gradient integrated stems OEM

XT-A014 ✅ Hollow Design - Reduces weight, boosts performance. ✅Anodized Finish - Fade-proof, waterproof, rust-resistant. ✅6061-T6 Aluminum - High-strength, corrosion-resistant. ✅CNC Machined - Precise fit, reliable handling. ✅Ultra-Lightweight - Only 129g, improves responsiveness.