Upgrade your mountain bike performance with this comprehensive 10-speed drivetrain kit designed for smooth, precise shifting and enhanced durability. Perfect for DIY bike builders or riders looking to upgrade from 7, 8, or 9-speed setups, this kit delivers a lightweight, wide gear ratio solution ideal for mountain biking terrains. Key Features: · 10-Speed Compatibility: Tailored for mountain bikes needing a reliable and efficient 1x10 speed system, offering smoother gear transitions and expanded gear range. · A7 Shift Lever with 1:1 Technology: Crafted from sturdy aluminum, the A7 gear lever ensures precise, quick response shifts. The transmission line is coated with ultra-low friction technology for smoother cable movement and enhanced durability. · A7 Rear Derailleur with Enhanced Damping: Designed with shadow RD slant technology and a large bearing pulley, this derailleur effectively reduces chain jitter and supports a giant sprocket up to 50T, ensuring stable and quiet operation. · Lightweight and Durable Cassette: Featuring an 11-42T tooth range (11-13-15-18-21-24-28-32-36-42T) with chain guide grooves, the aluminum alloy bracket offers durability and lightweight performance tailored to mountain biking needs. · High-Quality Chainring: The 36T chainring made of aluminum alloy 7075 (BCD104) provides excellent strength and durability with a sleek black finish, optimized for mountain bike drivetrains. · 10-Speed Chain: The 116-link silver chain is designed to offer smooth engagement and reliable performance across the entire gear range. Specifications: · Speed: 1x10 · Shift Lever Material: Aluminum with ultra-low friction coated cable · Rear Derailleur Features: Enhanced damping, shadow RD slant design, large bearing pulley · Cassette Tooth Count: 11-42T (11-13-15-18-21-24-28-32-36-42T) · Cassette Material: Aluminum alloy bracket · Chainring: 36T, Aluminum Alloy 7075, BCD104 · Chain: 10-speed, 116 links, silver color Package Includes: · 1 x A7 Shift Lever (1x10 speed) · 1 x 42T Flywheel · 3 x Flywheel Accessories · 1 x 36T Chainring (Disc) · 1 x 10-Speed Chain · 2 x Chain Link Heads · 1 x Tail Hook · 1 x Screw · 1 x Accessories Set This 10-speed mountain bike drivetrain kit combines precision engineering and durable materials to provide a smooth, efficient riding experience. Whether upgrading an existing bike or assembling a new one, this kit ensures quick, reliable shifting and long-lasting performance on various mountain terrains.