Enhance your mountain bike’s performance with this high-strength Bike Front Derailleur, designed with a lightweight aluminum alloy main body for durability and ease of use. Featuring a carbon steel chain guide with hardened oxidation treatment, this derailleur offers exceptional rigidity, wear resistance, and rust protection to ensure long-lasting performance in various riding conditions. Key Features: · **Lightweight Aluminum Alloy Body:** Forged for high strength and reduced weight, with an anti-rust painted surface layer that enhances durability and resists corrosion. · **Durable Carbon Steel Chain Guide:** Hardened surface oxidation treatment provides high rigidity and excellent wear and rust resistance, ensuring smooth and reliable chain guidance. · **Precise H/L Adjustment Screws:** Dual-positioning screws allow accurate setting of the high and low derailleur limits to keep the chain perfectly aligned between the largest and smallest flywheels, ensuring optimal shifting performance. · **Efficient Gear Shifting:** The shifting cable controls the chain guide, facilitating smooth and quick changes across different gear ratios to make riding faster and more labor-saving. · **Versatile Clamp Ring Compatibility:** Comes with 30.8/31.8mm conversion clamp rings, compatible with tube diameters of 30.8mm, 31.8mm, and 34.9mm, fitting most mountain and folding bikes. Select the correct clamp size based on your bike’s frame diameter. · **Wide Speed Compatibility:** Supports 3 x 9 and 3 x 10 speed drivetrain systems, compatible with three-piece cranksets featuring 42, 32, and 22 teeth. · **Easy Installation:** Conventional clamp-on installation with included clamp rings for quick and secure mounting on your bike frame. Specifications: · Material: Aluminum Alloy Body + Carbon Steel Chain Guide · Product Color: As Pictures Shown · Product Weight: Approx. 165g / 5.8oz · Applicable Speed: 3 x 9 / 10 Speed · Installation Diameter: 30.8mm / 1.2in, 31.8mm / 1.3in, 34.9mm / 1.4in · Applicable Crankset: Three-piece crankset with 42, 32, 22 Teeth · Applicable Models: Suitable for mountain bikes and folding bikes · Installation Method: Conventional Clamp-On Installation (with Clamp Ring) This Bike Front Derailleur combines strength, precision, and versatility to provide smooth, reliable shifting and improved riding efficiency on your mountain or folding bike. Its durable materials and adjustable features ensure compatibility and long-lasting use, making it an excellent upgrade for cyclists seeking enhanced performance.