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2016moto_en

1061 Dirt Bike Applicat ions (CONT.) Intake Duration Exhaust Duration Model Year Lift (mm) (mm) Lift (mm) (mm) Camshafts P/N Yamaha (cont.) YZ450F / Stage 1 03-09 8.86 269 N/A N/A Intake 13-9027 WR450F 03-15 N/A N/A 8.67 265 Exhaust 13-9028 • Dual-cam motor • Excellent midrange and top end power when installed at 105 degree centerline (factory preset). • Use stock valve springs. • Uses stock auto-decompression mechanism YZ450F / Stage 2 03-09 8.89 260 N/A N/A Intake 13-9091 N/A N/A 8.74 253.5 Exhaust 13-9092 • Dual-cam motor • Excellent midrange and top end power when installed at 105 degree centerline (factory preset). • Uses stock valve springs. • Uses stock auto-decompression mechanism YZ 450F / Stage 1 10-13 9.4 250 x x Intake 13-9150 x x 8.64 249 Exhaust 13-9158 • This is the cam set that will suit most riders in most riding situations when used as a set provide increased low - mid rpm torque up to 9000 rpm • Improved peak torque with no loss at high rpm • Throttle response is also improved YZ 450F / Stage 1 10-13 9.78 265 x x Intake 13-9152 x x 8.9 254 Exhaust 13-9160 • When used as a set provide increased mid-top torque and horsepower. • Produces more power than the OE cams from 6000 rpm and up with a slight loss at lower rpm • Produces more power than the stage 1 set from 8000 rpm and up. Performance


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