Yamaha’s all-new 189 bhp, US$11,600 YZF-R1 Supersport

Spark energy has been increased by a re-evaluation of the coil resistance, and the addition of magnets to the coils helps to reduce magnetic saturation.

3-way catalyser with oxygen sensor

A new 3-way catalyser with oxygen sensor not only reduces emissions, it also helps to achieve excellent fuel economy. The new system features platinum and rhodium elements in a honeycomb-shaped catalyser. The system’s efficiency is further improved by the addition of an oxygen sensor which feeds information to the ECU, which can instantaneously adjust fuel supply to ensure optimum combustion efficiency for improved performance and cleaner emissions.

Engine Technical Highlights

∑ New liquid-cooled 4-stroke in-line 4-cylinder engine ∑ Bore x stroke 77 x 53.6mm ∑ Higher 12.7:1 compression ratio ∑ New YCC-I (Yamaha Chip Controlled Intake) variable intake funnel – the first ever electronically-controlled motor-driven system on a production motorcycle ∑ New YCC-T (Yamaha Chip Controlled Throttle) electronic throttle ∑ New 4-valve cylinder head design ∑ Titanium intake valves ∑ Redesigned combustion chamber ∑ Slipper clutch ∑ Reshaped dual upswept mufflers ∑ High performance ignition coils ∑ 3-way catalyser with oxygen sensor ∑ Closed-deck cylinder ∑ Liner-less plated cylinder ∑ FS (Fracture Split) connecting rods ∑ More efficient Forced Air Intake system ∑ Compact EXUP with titanium valves ∑ New-shape twin-fan radiator

Chassis - All new Deltabox frame with re-balanced rigidity

The fifth-generation R1 is equipped with an all-new Deltabox frame which has been designed to offer outstanding handling and cornering performance, and strong high-speed stability.

Externally this new frame appears similar to the 2006 design, but it is has been completely redesigned, and offers a totally revised rigidity balance which matches the increased performance potential of the new engine.

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