The engineer's notes I reviewed indicate power at the crank is slightly lower in the low-end and mid-range, but equal to last year's bike at the rear wheel (through some sort of reduction in parasitic losses). Top-end power, as stated, is claimed to be substantially increased. Kawasaki says peak horsepower is now 181 versus 175 last year. With the aide of ram air, peak horsepower on the new ZX-10R is a claimed 192 versus 183 last year. The bike has gained 8 pounds (a claimed 394 dry). Mass centralization is improved, however, in part by the replacement of the high-mounted, twin exhaust mufflers (under the seat last year) with a single muffler located lower and closer to the center of gravity. Kawasaki uses secondary fuel injectors (that kick in at 6,000 rpm) for 2008, oval throttle bodies (for increased flow) and reshaped intake ports. Together with a higher lift cam profile, Kawasaki achieved the increase in top end power.