Cutting-Edge CP4® Engine
. The R1’s 998cc inline-four-cylinder engine features Yamaha’s exclusive crossplane crankshaft technology derived from Yamaha’s YZR-M1 MotoGP® race bike. By equalizing inertial forces at the crankshaft, the CP4 motor delivers a direct feeling of linear torque, giving the rider the ultimate connection between throttle grip and the rear wheel.
High-Output Engine Technology
 Titanium connecting rods use Yamaha’s precision fracture-split method to ensure maximum reliability with minimal weight. Combined with titanium intake valves and forged pistons, these lightweight parts help achieve the CP4’s high redline and over-rev capability. The cylinder block is also offset from the crankshaft, reducing friction loads on the pistons and bores.