Some riders push their limits more than others. For those riders, the GX Eagle DUB crankset allows them to go all-in, every day they ride. The best aluminum crankset we make, engineered to deliver consistent performance every ride. With our X-SYNC 2 tooth profile chainring for complete chain control. The thickness of each tooth is tolerated and controlled to work seamlessly with the chain's inner and outer links. The DUB technology's patented spindle design and bottom bracket provide a unified approach to fitment, better sealing, and forward and backward compatibility. Simply put, the forged aluminum GX Eagle DUB crankset is the no-frills choice of riders who know. Our best aluminum crankset. Direct mount interface compatible with chainrings across the Eagle ecosystem. Master GX colorway as part of Eagle Colorsystem - pairs with all cassettes and chains, from black to gold to rainbow to hard chrome and all-new copper.