• The Kawasaki Ninja 636 is a powerful, middleweight sports bike.motorcycle image by Bionic Media from Fotolia.com
  
  The 2005 Kawasaki Ninja 636 is officially known as the 2005 Kawasaki Ninja ZX-6R. Many people refer to the motorcycle as the Ninja 636 because of its powerful 636-cc engine. The 636-cc engine was introduced in 2003 to replace the traditional 600-cc engine. Motorcycle enthusiasts viewed Kawasaki's decision to make a bigger engine as a response to the increased competition at the time.
  
  

Engine

• The Ninja 636 has a transverse, four-stroke engine with a double overhead camshaft and four in-line cylinders. The engine has a four-valve cylinder head with a total of 16 valves. It has a displacement of 636 cubic centimeters, or 38.8 cubic inches. The bore/stroke is 2.68 by 1.72 inches. The engine is liquid cooled and has a compression ratio of 12.9-to-1. The engine uses fuel injection with four 1.5-inch throttle bodies.
  
  

Transmission

• The Ninja 636 has a multi-disc six-speed transmission. The Ninja 636 also introduced a back-torque limiter in 2005.
  
  

Torque

• The Ninja 636 has a maximum torque of 48.1 foot-pounds at 11,500 rpm.
  
  

Horsepower

• The Ninja 636 officially gets 124 horsepower at 12,500 rpm. The rear wheel of the Ninja 636 can reach up to 110 horsepower when hooked up to a Dyno. 130 horsepower can be obtained at high speeds on specifically designed motorcycle tracks. The 2005 Ninja 636 added 15 percent more aero-drag than previous models. The added aero-drag gives the Ninja 636 an estimated 10 extra horsepower at 160 mph.
  
  

Performance

• The Ninja 636 finishes a 1/4-mile in 10.69 seconds and gets a top speed of 131 mph at the end of a 1/4-mile. The top speed of the Ninja 636 is 168 mph.