Upgrade your mountain bike’s performance with this comprehensive 10-speed drivetrain upgrade kit, expertly designed to enhance speed, durability, and shifting precision. This all-in-one kit includes a 10-speed cassette flywheel, 104BCD 170mm crank set, 10-speed chain, shifter, rear derailleur, center shaft, and hanger extender—everything you need to improve your bike’s drive system for a smoother, faster ride. Key Features: · Complete 10-Speed Drivetrain Kit: Includes 10-speed cassette flywheel (11-50T), 104BCD 170mm crank set, chain, shifter, rear derailleur, center shaft, and hanger extender for a full drivetrain upgrade. · Enhanced Speed Performance: Designed to significantly improve mountain bike speed by optimizing gear ratios and combining aerodynamic elements to reduce bike weight. · Premium Material Construction: Crafted from high-quality steel and aluminum alloy providing excellent strength, durability, wear resistance, and impact resistance while preventing rust and corrosion. · Smooth and Precise Shifting: The included shifter and rear derailleur offer reliable and responsive gear changes, ensuring effortless shifting under all riding conditions. · Easy Installation & Wide Compatibility: Designed for straightforward installation and compatibility with most standard mountain bike systems, allowing for quick upgrades without hassle. · Ideal Gift for Cycling Enthusiasts: Perfect for family, friends, colleagues, or any cycling enthusiast looking to enhance their bike’s performance and riding experience. Specifications: · Material: Steel + Aluminum Alloy · Flywheel: 10 Speed (11-13-16-20-24-28-32-36-42-50T) · Crank Length: 170mm · Chainring BCD: 104mm · Package Size: 260 x 180 x 150mm (10.2 x 7.1 x 5.9in) · Package Weight: 2015g (4.4lb) Package Includes: · 1 x 10-Speed Cassette Flywheel · 1 x 104BCD 170mm Crank Set · 1 x 10-Speed Chain · 1 x Shifter · 1 x Rear Derailleur · 1 x Center Shaft · 1 x Hanger Extender This durable and reliable 10-speed bike drivetrain kit is the perfect upgrade for mountain bikers seeking improved speed, shifting performance, and durability. Boost your riding experience with smooth gear transitions and an aerodynamic design that helps reduce bike weight, making every ride faster and more enjoyable.