See It In Action: Watch Our Demo on YouTube：

🚩 Product Features & Technical Specifications

The LUNJE A001 is our most versatile and popular 3D forged stem, engineered for riders who demand both performance and ergonomic comfort. Its multi-angle design makes it the ultimate solution for posture correction and high-performance trail riding.

3D Forged Construction: Crafted from aerospace-grade AL6061-T6 Aluminum Alloy. Unlike standard casting, 3D forging ensures superior structural integrity and safety.

Extreme Versatility (Multi-Angle): Available in ±10°, ±17°, ±25°, and ±35°. The high-rise options (25°/35°) are perfect for alleviating back and neck strain.

Precision Geometry: * Barbore (Clamp): 31.8mm (Standard)

Steerer Diameter: 28.6mm (1-1/8")

Lengths: 60mm / 70mm / 80mm / 90mm / 100mm / 110mm

Hollow-Out Design: Optimized for lightweight performance (approx. 125g-160g) without sacrificing stiffness or handlebar control.

Premium Finish: Sandblasted anodized surface (Matte Black) with precision Laser-Etched Logos.

💡 FAQ Section

Q: Why should I choose a 35-degree riser stem like the A001? A: A 35-degree stem is the best choice for riders looking for a more upright "Comfort Geometry." It raises the handlebar height significantly, reducing pressure on the lower back and wrists—ideal for long-distance touring and MTB commuting.

Q: Is 3D Forging safer than CNC or Casting? A: Yes. 3D forging aligns the grain structure of the aluminum, making the metal significantly stronger and more resistant to fatigue. For a critical safety component like a bike stem, 3D forging is the industry gold standard.

Q: Do you provide custom branding (OEM) for bike shops? A: Absolutely. We support Custom Laser Logos and tailored packaging for as few as 50-100 units, helping you build your own private label with factory-direct support.

🏭 LUNJE – The Preferred Hardware Factory for Global E-commerce & Top Brands

Since 2012, LUNJE has been a specialized manufacturer providing high-strength, high-aesthetic, and compliant OEM/ODM solutions for world-renowned bicycle brands, large-scale wholesalers, and top-tier sellers on Amazon, Shopee, and Lazada. As a leading Chinese component manufacturer, our production processes strictly align with the technical standards of global tier-1 brands, ensuring you receive world-class performance at Factory-Direct Pricing.

✅ Certified Excellence & Industry Standards As a full-category supplier of handlebars, stems, and seatposts, our products pass rigorous SGS Fatigue and Strength Testing and fully comply with the ISO 4210 Safety Standard. By utilizing aerospace-grade AL6061-T6 and 7075 alloys, we guarantee maximum safety and durability, protecting your brand's reputation in extreme riding conditions.

🚀 Extreme Efficiency & E-commerce Empowerment We understand the "Need for Speed" in cross-border e-commerce. For our best-selling series and colorful anodized components, we maintain massive ready-to-ship inventory. We support small-batch trial orders with same-day dispatch. Whether you are building a private label or sourcing wholesale, LUNJE is your most stable supply chain partner in the cycling industry.

🌟 B2B Core Advantages:

Original Patent Protection: With the latest Utility Model Patent, we ensure your distribution business is free from copyright risks. 🛡️

EU Market Access: Registered with ADEME (EPR) in France (since 2023) and compliant with LUCID in Germany (DE3054614157915). Fully meets EU AGEC act requirements for barrier-free cross-border trade. 🇪🇺

Deep Customization (OEM/ODM): Supporting Logo Customization, specification development, and tailored packaging to boost your brand premium. 🎨

📞 Take Action Now – Get Your Exclusive Profit-Driven Quote!

LUNJE is committed to supporting bike shops, e-bike modifiers, and international distributors with factory-direct pricing and reliable lead times.

Connect with Our Factory Representative:   
For bulk pricing, technical drawings, or OEM collaboration, reach out to us directly:

📱 WeChat / WhatsApp: +86 13798419681

📧 Email: lunje.bicycle@gmail.com

🔗 Explore More Products: https://en.koofbike.com/Product/1.html

🔗 Butted Handlebars with Certificates: https://en.koofbike.com/Product/2.html

🔗 Classic Seatposts: https://en.koofbike.com/Product/4.html

👉 Reinforced Riser Bars for Electric Motorcycles:

https://en.koofbike.com/Product_detail/65.html