Upgrade your cycling experience with this comprehensive 9 Speed Groupset, designed to deliver smooth and reliable shifting performance. This all-in-one set includes a 9-speed freewheel, hollow integrated aluminum alloy crank, shift lever, rear derailleur, chain, tail hook, and essential accessories, providing everything needed for a complete drivetrain upgrade or bike customization. Key Features: · Durable High-Strength Steel Freewheel: Crafted from quenched, tempered, and hardened steel plate for exceptional strength and long-lasting performance under rigorous cycling conditions. · Rust-Resistant Multi-Layer Electroplated Surface: The freewheel features multiple electroplated layers for superior rust prevention, enhancing durability and maintaining smooth operation over time. · Smooth Shifting with Drop Gear Design: Engineered to ensure seamless gear transitions, the drop gear design promotes precise and efficient speed changes for an optimal riding experience. · Lightweight and Sturdy Aluminum Alloy Crank: The hollow integrated crank is made from premium aluminum alloy, offering a stylish appearance, strong axial strength, and wide compatibility with various bike models. · Versatile Teeth Range: Equipped with an 11-40T freewheel (11-13-16-20-24-28-32-36-40T), providing a broad gear range suitable for different terrains and riding styles. · Perfect for DIY Bike Upgrades: Ideal for cycling enthusiasts looking to customize or enhance their bike’s performance, this groupset is a great choice for family or friends who enjoy hands-on bike maintenance and upgrades. Specifications: · Item Type: 9 Speed Groupset · Material: Aluminum Alloy (Crank), High-Strength Steel (Freewheel) · Teeth Number: 11-13-16-20-24-28-32-36-40T Package Includes: · 1 x 9 Speed Freewheel · 1 x Hollow Integrated Aluminum Alloy Crank · 1 x Shift Lever · 1 x Rear Derailleur · 1 x Chain · 1 x Tail Hook · Additional Accessories for Installation This 9 Speed Groupset combines durability, rust resistance, and smooth shifting technology, making it an excellent upgrade for riders seeking improved bike performance and customization options. Whether you’re a casual cyclist or a dedicated enthusiast, this groupset provides reliable components to enhance your cycling adventures.