HOT CAMS EXHAUST CAMSHAFTS YAMAHA YZ 450F 10-

The #4171-EXBLD exhaust cam is a good choice for high RPM power in modified engines. When used as a set with the #4169-INBLD modified engines will produce good high RPM horsepower. Uses stock valve springs._x000D_
|The #4171-EXBLD exhaust cam is a good choice for high RPM power in modified engines. When used as a set with the #4169-INBLD modified engines will produce good high RPM horsepower. Uses stock valve springs._x000D_
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>Exhaust Duration: 257 >Exhaust Lift: 10,16 >Exhaust Lobe Center 104 > 0,15 >Intake Duration: 0 >Intake Lift: 0 >Intake Lobe Center: 0 >Intake Valve Lash: 0