Other details about the YZF-R1 from the Yamaha site…
- The YZF-R1 uses the YCC-T fly-by-wire throttle system for flawless response under all conditions.
- Inline four-cylinder engine is the most powerful, tractable R1 powerplant ever, thanks partially to the world’s first electronic variable-length intake funnel system.
- Lay-down-design cylinder head optimizes weight distribution, straightens intake tracts for improved cylinder filling and allows frame to pass over instead of around the engine for great strength and a narrow chassis.
- A Deltabox frame tuned for optimal flex carries the lay-down four-cylinder stressed-member style for great handling an efficient aerodynamic penetration. A truss-type swingarm is extremely strong and tuned for optimal traction and feedback.