The NEW V10 400R, a worthy successor to the legendary L6 S/C 400R outboard, Mercury Racing NEW 400R offers more low-end torque, more peak horsepower, and better fuel economy than the L6. Delivering the potent performance and drivability that only Mercury Racing can offer. The Mercury Racing 400R features a new naturally aspirated V10 5.7-liter powerhead that is based on the proven design architecture of the V8 4.6-liter Mercury Racing 300R model. The 64-degree powerhead displaces the 5.7 liters while maintaining the compact width required for 26-inch center-to-center mounting on multi-engine transoms for seamless installations on new boats and repower applications The Mercury Racing V10 400R will be available in four lengths – 20”, 25”, 30”, and 35” – to accommodate any single or multi-engine performance application. Gearcase Options: (STD. 1.60:1 Gear Ratio) The race-proven Sport Master gearcase is a surface-piercing design in The Mercury Racing 5.44 HD gearcase is ideal for heavy boats and multi-engine performance boats that benefit from added stern lift. A new series of custom-crafted four-blade Ventera™ propellers are designed to amplify the performance of the V10 400R outboard. PLUS, depending on the boating application a selection of performance-proven Mercury Racing propellers are also available for either gearcase Color Options: Phantom Black or Cold Fusion White finished with Mercury Racing graphics and Devil Eye Red trim.