XT-A829 🏆 3D Forged Suspension Stem Factory (SGS Certified) 💎 Technical Specifications: 🆔 Model: LUNJE® XT-A829 (Suspension Bike Stem Series) 🛡️ Material: 3D Forged 6061-T6 Aluminum Bike Parts (High Strength) ⚙️ Tech: Smart Shock Absorber (Soft/Hard Spring Options) 📏 Length: 60/70/80/90/100/110mm Options ⭕ Clamp: 31.8mm (Standard Aluminium Bicycle Handlebars Fit) 📐 Adjustment: Adjustable Bike Stem OEM (0-60° Customizable Rise) 🍴 Steerer: 28.6mm (1-1/8") Universal Compatibility 🎨 Finish: Black/Purple Anodized (Bicycle Parts Custom Logo Available) ✅ Performance: Absorbs 30% Trail Vibrations / 45% Fatigue Reduction 📜 Compliance: SGS Certified & ISO 4210 Bike Stem Compliant Direct Factory Quotes & OEM/ODM Support: 📧 E-mail: lunje.bicycle@gmail.com 📱 WhatsApp: +86 13798419681
Why the XT-A037 Stem Opts for M6 Bolts Over the Industry-Standard M5? 🏭 LUNJE Factory: Committed to Rider Safety 1. Maximum Clamping Force for DH, Enduro, and E-MTB Safety 2, High Durability & Fatigue Resistance (Built to Last) 3, Zero Bolt Stripping (M6 Precision Engineering) 4, Over-Engineered for Heavy-Duty Performance Technical Specifications :💎 ✓ Model: LUNJE XT-A037 (New models for sale now) ✓ Material: Full CNC Machined 6061-T6 Aluminum Alloy ✓ Length: 35mm (Short reach for snappier handling) ✓ Handlebar Clamp Diameter: 31.8mm (Ideal upgrade for 31.8mm handlebars) ✓ Steer Tube Diameter: 28.6mm (1-1/8") ✓ Angle: 0° Degree (sharpens up the handling) ✓ Weight: Approx. 160g (Optimized Strength-to-Weight Ratio) ✓ Finish: Anodized Scratch-Resistant Surface (clean, race-ready look)
LUNJE® CNC Bike Stem Factory - SGS Certified A015B Aluminum MTB Stem OEM
XT-A015B 🏆 Professional CNC Bike Stem Factory (SGS Certified) 💎 Technical Specifications: 🆔 Model: LUNJE® XT-A015B (CNC Bike Stem Series) 🛡️ Material: High-Strength 6061 Aluminum Bike Parts ⚙️ Process: Full 5-Axis CNC Machined & Hollow-Out Design 📏 Extension: 35mm (Optimized for Enduro/Trail Control) ⭕ Clamp: 31.8mm (Standard Aluminium Bicycle Handlebars Fit) 📐 Geometry: 0° Rise | 28.6mm Steerer | 42mm Stack Height ⚖️ Weight: Approx. 124g (Ultra-Lightweight Performance) 🎨 Finish: 10 Anodized Colors (Oil-Slick/Gradient Available) ✅ Service: OEM MTB Parts & Bicycle Parts Custom Logo Specialist 📜 Compliance: SGS Certified Bike Parts & ISO 4210 Compliant Direct Factory Quotes & OEM Support: 📧 E-mail: lunje.bicycle@gmail.com 📱 WhatsApp: +86-137-9841-9681
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
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
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
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.
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.
XT-A013🚵🏻♀️🚴🏻♂️ LUNJE ±17° Forged Stem - 50-110mm Sizes for MTB & Gravel Bikes - 31.8mm Clamp 1-1/8" Steerer. ✅ Factory Direct OEM Pricing - Custom lengths, angles, and finishes available for bulk orders ✅ Dual-Size Range Optimization - 50-90mm for XC/Trail/Enduro MTB🚵🏻♀️ & 70-110mm for Gravel/Adventure bikes🚴🏻♂️ ✅ Premium CNC Forged 6061 Aluminum - Superior stiffness-to-weight ratio, impact tested for durability ✅ Broad Compatibility - 31.8mm handlebar clamp, 28.6mm steerer, fits most modern mountain and adventure bicycles Ideal for Technical Trail Riding and Bikepacking - Perfect blend of control, comfort, and customization Contact us for quotes and OEM customization: 📧 Email: georgechen@koofbike.com 📱 WhatsApp: +86 13798419681 🌐 Product Page: https://en.koofbike.com/Product_detail/70.html #MTBStem #GravelBike #BikeStem #LUNJEOEM #AdventureBike #BikeParts
XT-A025 🚵🏻♀️ DH/FR Direct Mount Stem. CNC-machined from 6061-T6 aluminum for maximum strength and precise steering. Features 0° rise for direct handling and fits all standard dual crown forks with a 31.8mm handlebar clamp. ✅ Lightweight. ✅ Durable. Contact us for quotes & OEM customization: 📧 Email: georgechen@koofbike.com 📱 WhatsApp: +86 13798419681 🌐 Product Page: https://en.koofbike.com/Product_detail/71.html #MTBStem #DownhillBike #EnduroBike #BikeParts #OEMManufacturing
✅ CNC Machined 6061 Aluminum - Flawless finish, perfect fit, durable. ✅ Ultra-Lightweight - Reduces weight, full strength. ✅ Includes M6x30 Star Nut - Ready to install, no extra purchase. ✅ 1-1/8" Universal Fit - Fits 28.6mm MTB, road, hybrid bikes. ✅ Sleek Style - Two-tone gradient, custom front-end look. ✅ OEM Quality - High precision, smooth threads, reliable preload.
XT-A139 CNC Material: AL 6061-T6 Feature: CNC machined Ext Length: 45mm Caliber: 25.4mm Angle: 0° Height: 40mm Weight:125g Color: Anodized four color option
LUNJE® XT-A822 Adjustable Handlebar Stem Specifications Brand: LUNJE (轮迹) Model No.: XT-A822 Material: Premium Aluminum Alloy AL6061-T6 Manufacturing Process: 3D Forged + CNC Precision Machining Adjustment Angle: ±85° Degree Adjustable (Ultra-Wide Range) Handlebar Clamp Diameter: 31.8mm Steerer Tube Diameter: 28.6mm (1-1/8") Length Options (Center to Center): 90mm / 110mm / 130mm / 145mm Stack Height: 35mm Surface Treatment: Frosted Anodized (Black / Purple / Red / Blue / Gold optional) Approx. Weight: 330g - 420g (Varies by length) Certification: ISO 4210 / EPR Compliant Application: MTB, Road Bike, E-Bike, City Commuter, Folding Bike Key Features for Wholesale & OEM: Ergonomic Design: Effectively relieves back and neck fatigue by allowing a customized upright riding posture. High Strength: 3D forged construction ensures superior structural integrity for electric and mountain bikes. Precision Adjustment: Clear laser-etched angle scale for easy and accurate positioning. Customization: Supports OEM/ODM orders with custom logo laser engraving.
🚀 LUNJE® XT-A030 Skeleton Series – Ultra-Light Precision MTB Stem Skeleton Design | 31.8mm/45mm | 145g Competitive Weight 💎 Key Innovations: ✓ Extreme Lightweight (145g): Innovative Skeleton Hollow-Forged 6061-T6 aluminum reduces mass without compromising structural integrity. ✓ Titanium Hardware Integration: Factory-fitted with Grade 5 Titanium Screws for ultimate weight reduction and permanent corrosion resistance. ✓ Optimized Handling Geometry: The 45mm Short Reach design provides razor-sharp steering control, perfect for modern aggressive trail geometry. ✓ Anodized Aesthetics: Premium Rainbow & Gradient finishes with a matte CNC-machined surface that resists scratches and looks stunning on high-end builds.
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 💬 "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