Ready to upgrade your mountain bike's performance? This Topyond 9-speed groupset gives you everything you need for smooth, reliable shifting on the trails. You get a complete set: 9-speed freewheel with 11-40T range for those tough climbs, hollow integrated crank for lightweight strength, shift lever, rear derailleur, chain, and all the essential accessories. The freewheel is built from high-strength steel that's been quenched and tempered for serious durability - this thing can handle rough trail abuse. The aluminum alloy crank looks sleek but packs impressive axial strength, and the multiple electroplating layers prevent rust while ensuring smooth gear changes. Perfect for DIY bike enthusiasts who want to build a custom setup or upgrade their current ride. Whether you're building a bike from scratch or just tired of your old components skipping gears, this groupset delivers professional-level performance without the crazy price tag. Installation is straightforward if you're handy with bike mechanics, and the compatibility works with most mountain bike frames. Your rides are about to get a whole lot smoother with this upgrade!
Free 30-day returns 
Free 30-day returns
