CAM GRIND #461/496
Fits: -01-05 YAMAHA RAPTOR 660 -02-08 YAMAHA GRIZZLY 660 -04-07 YAMAHA RHINO 660
Bolt in profile increases overall performance throughout RPM range. Stock springs OK. Includes compression release.
VALVE LIFT: .340"/.355"
DURATION: 260/265
DURATION AT .050": 232/235