Precision engineered from the ground up to deliver Power and Performance. The fourth generation of Revo SX delivers the most powerful, durable and high performance SX yet. The improved DuraClutch design along with an upgraded Infini brake system result in smooth engagement along with effortless casting performance. The D2 Gear Design paired with a brass main gear delivers the ultimate in durability and efficiency resulting in less effort and more power. Revo SX is topped off with the keyed Power Stack Carbon Matrix Drag System. 9 stainless steel ball bearings + 1 roller X2-Cräftic alloy frame C6 carbon sideplates Power Stack Carbon Matrix Drag System Duragear brass gear D2 Gear Design Everslik coated pinion shaft and pawl DuraClutch design Infini brake system Infini II spool design Compact bent handle and star Ti coated line guide Lube port