Kawasaki 2006-2007, 2009-2012 KLX250 / 2009-2010 KLX250SF 39 Tooth Rear Sprocket Brand New 39 Tooth Rear Steel Sprocket Race-Driven sprockets are manufactured to exceed OEM specifications Race-driven sprockets are produced using hardened S45C steel Fits Kawasaki 2006-2007, 2009-2012 KLX250 / 2009-2010 KLX250SF