The 2009 Yamaha YZF R1 is like no other 1000cc machine period.
This is like no in-line-four cylinder sportsbike ever produced. It’s simply sensational.  The Yamaha R1’s has an ultra-short-stroke engine using a cross-plane crankshaft, with the crank pins set at 90° and has irregular firing intervals (bang bang), which is tech taken straight from Valentino Rossi’s factory Yamaha.  [...]

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