Enhance your bicycle’s performance with these premium CNC machined Bicycle Jockey Wheels, crafted from lightweight and durable 7005 aluminum alloy. Featuring an anodized finish, these jockey wheels offer excellent resistance to rust and corrosion, ensuring long-lasting reliability for your cycling adventures. Designed to fit most rear derailleurs on the market, they support 7, 8, 9, and 10-speed systems, making them a versatile upgrade for a wide range of bikes. Key Features: · **High-Quality CNC Aluminum Alloy Construction:** Made from 7005 aluminum alloy, these jockey wheels provide a lightweight yet durable solution for smooth gear shifting and enhanced drivetrain efficiency. · **Anodized Anti-Rust and Corrosion Resistant Finish:** The anodized surface protects against rust and corrosion, extending the lifespan of the pulleys even in harsh riding conditions. · **Smooth Ball Bearing Operation:** Equipped with fully rubber-sealed ceramic bearings, these pulleys ensure low friction and quiet, smooth rotation for improved shifting performance. · **Wide Compatibility:** Designed to fit most rear derailleurs on the market, compatible with 7, 8, 9, and 10-speed systems, offering broad application for various bike models. · **Multiple Size and Color Options:** Available in 11T (40mm diameter) and 13T (50mm diameter) sizes, and offered in Red, Blue, and Silver colors to match your bike’s style and specific needs. · **Lightweight and Precise:** Each pulley weighs approximately 20g (11T) or 23g (13T), balancing durability with minimal added weight to your bike. Specifications: · Material: 7005 Aluminum Alloy · Components: Derailleurs · Bearing Type: Ceramic Bearings with full rubber seal · Sizes Available: 11T (40mm diameter), 13T (50mm diameter) · Speed Compatibility: 7/8/9/10 speed systems · Color Options: Red, Blue, Silver · Quantity: 2 pieces per package · Fit For: 4/5/6mm roller screw axis Package Includes: · 2 x Bicycle Jockey Wheels with Ceramic Bearings Upgrade your bicycle drivetrain with these precision-engineered CNC aluminum jockey wheels for smoother shifting, enhanced durability, and reliable performance on every ride.