Sport Rider Photos
The larger bore permits the titanium valves to grow 1mm, with the intake now 31mm and the exhaust 25mm in diameter. With the included valve angle slightly steeper at 24.5 degrees (due to the exhaust valve angle going from 13 degrees to 12.5 degrees), the compression ratio raises incrementally from 12.5:1 to 12.8:1.
2009 Suzuki GSX-R1000 K9 - Ultimate Makeover