Hotcams
Camshafts
Intake
Exhaust
YAMAHA
Lift Duration
Lift Duration
Models
Years Hot Cam
(mm) (@ 1mm) (mm) (@ 1mm) Part No
Intake Cam. Stage 1. Increases bottom and midrange power for improved snap. *1 Exhaust Cam. Stage 1. Increases bottom and midrange power for improved snap. *1 Intake Cam. Stage 1. Excellent bottom-end and midrange increase: Designed with Improved Throttle Response (I.T.R.) technology. *1 Exhaust Cam. Stage 1. Excellent bottom-end and mid-range power increase: Designed with Improved Throttle Response (I.T.R.) technology. *1 Intake Cam. Stage 1. Increases bottom and midrange power for improved snap. *1,*6 Exhaust Cam. Stage 1. Increases bottom and midrange power for improved snap. *1,*6 Intake Cam. Stage 1. Excellent bottom-end and midrange increase: Designed with Improved Throttle Response (I.T.R.) technology. *1 Exhaust Cam. Stage 1. Excellent bottom-end and midrange increase: Designed with Improved Throttle Response (I.T.R.) technology. Includes auto-decompression mechanism. *1 Intake Cam. Stage 1. Good bottom-end and mid-range increase up to 10,800 RPM with slight top end loss. *1 Exhaust Cam. Stage 1. Good bottom-end and mid-range power increase up to 10,800 RPM with slight top end loss: Designed with Improved Throttle Response (I.T.R.) technology. Includes decompression mechanism. *1 Intake Cam. Stage 2. Good gains 9,200 RPM to rev limiter with no bottom-end loss: Designed with Improved Throttle Response (I.T.R.) technology *1 Exhaust Cam. Stage 2. Good gains 9,200 RPM to rev limiter with no bottom-end loss: Designed with Improved Throttle Response (I.T.R.) technology. *1
8.48
249°
56-C309.IN 56-C309.EX
WR 250F
2001 - 13
8.1
252°
9.58
252.4°
56-C332.IN.STG1
WR 250F
2015 - 19
8.59 246.70° 56-C159.EX.STG1
8.48
249°
56-C309.IN 56-C309.EX
YZ 250F
2001 - 13
8.1
252°
9.58
252.4°
56-C332.IN.STG1
YZ 250F
2014 - 16
8.59 246.70° 56-C332.EX.STG1
9.47 248.44°
56-C152.STG1
8.59 245.59° 56-C153.STG1
YZ 250F
2017 - 18
9.91 256.89°
56-C152.STG2
9.02 252.83° 56-C153.STG2
Intake Cam. Stage 1. Exhaust Cam. Stage 1/2. Intake Cam. Stage 2. Intake Cam. Stage 2. Exhaust Cam. Stage 1/2.
10.110 253°
56-C163.IN.STG1
YZ 250F
2019 - 20
9.398 249.80° 56-C164.EX.STG1
10.410 257.35° 10.410 257.35°
56-C163.IN.STG2 56-C163.IN.STG2
YZ 250FX
2020 - 21
9.398 249.80° 56-C164.EX.STG1
Intake Cam. Stage 1. Excellent midrange and top-end increase. "Minimal bottom-end loss below 3,000rpm, usable power increase from 3,500 - 10,800rpm". *1, *3, *7 Exhaust Cam. Stage 1. Excellent midrange and top-end increase. Must be bought in conjunction with Intake cam 56-C302.IN Intake Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline. *1 Exhaust Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline: Designed with Improved Throttle Response (I.T.R.) technology. *1 Intake Cam. Stage 2. Slight bottom end gain to 4800 RPM and good gains from 6500 RPM to redline. *1 Exhaust Cam. Stage 2. Slight bottom end gain to 4800 RPM and good gains from 6500 RPM to redline: Designed with Improved Throttle Response (I.T.R.) technology. *1
8.86
269°
56-C302.IN
WR 450F
2003 - 15
8.67
265°
56-C320.EX
10.41 248.39°
56-C160.IN.STG1
9.58 205.20° 56-C161.EX.STG1
WR 450F
2016 - 18
10.80 262.55°
56-C160.IN.STG2
10.16 260.39° 56-C161.EX.STG2
Intake Cam. Stage 1. Excellent midrange and top-end increase. "Minimal bottom-end loss below 3,000rpm, usable power increase from 3,500 - 10,800rpm". *1, *3, *7 8.86
269°
56-C302.IN
YZ 450F
2003 - 09
Exhaust Cam. Stage 1. Excellent midrange and top-end increase. *1
8.7
265°
56-C302.EX
Intake Cam. Stage 1. Increased power up to 9000 RPM with no loss on the top-end: Improved throttle response. *1 Exhaust Cam. Stage 1. Increased power up to 9000 RPM and no loss on the top-end: Improved throttle response. *1 Intake Cam. Stage 2. Improved power from 6000 RPM to rev limiter with a slight loss at lower RPM. More power from 8000rpm and up than Stage 1. Exhaust Cam. Stage 2. Improved power from 6000 RPM to rev limiter with a slight loss at lower RPM. *1
9.4
250°
56-C331.IN.STG1
8.64
249°
56-C331.EX.STG1
YZ 450F
2010 - 13
9.78
265°
56-C331.IN.STG2
8.9
254°
56-C331.EX.STG2
Intake Cam. Stage 1. Excellent low to mid-range increase: Designed with Improved Throttle Response (I.T.R.) technology. *1 9.73 Exhaust Cam. Stage 1. Excellent low to mid-range increase: Designed with Improved Throttle Response (I.T.R.) technology. *1
251.8°
56-C333.IN.STG1
YZ 450F
2014 - 15
9.14 249.40° 56-C333.EX.STG1
Intake Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline. *1 Exhaust Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline. : Designed with Improved Throttle Response (I.T.R.) technology. Intake Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline. *1 Exhaust Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline: Designed with Improved Throttle Response (I.T.R.) technology. *1 Intake Cam. Stage 2. Slight bottom end gain to 4800 RPM and good gains from 6500 RPM to redline. *1 Exhaust Cam. Stage 2. Slight bottom end gain to 4800 RPM and good gains from 6500 RPM to redline: Designed with Improved Throttle Response (I.T.R.) technology. *1 Intake Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline. *1 Exhaust Cam. Stage 1. Good low to mid range gains up to 9200 RPM with minor loss to redline: Designed with Improved Throttle Response (I.T.R.) technology. *1 Intake Cam. Stage 2. Slight bottom end gain to 4800 RPM and good gains from 6500 RPM to redline. *1 Exhaust Cam. Stage 2. Slight bottom end gain to 4800 RPM and good gains from 6500 RPM to redline: Designed with Improved Throttle Response (I.T.R.) technology. *1
10.14 248.39°
56-C160.IN.STG1
YZ 450F
2016 - 17
9.58 250.20° 56-C162.EX.STG1
10.14 248.39°
56-C160.IN.STG1
9.58 205.20° 56-C161.EX.STG1
YZ 450F
2018 - 19
10.80 262.55°
56-C160.IN.STG2
10.16 260.39° 56-C161.EX.STG2
10.14 248.39°
56-C160.IN.STG1
9.58 205.20° 56-C161.EX.STG1
YZ 450FX
2016 - 19
10.80 262.55°
56-C160.IN.STG2
10.16 260.39° 56-C161.EX.STG2
*1: Uses stock valve springs. *2: Uses stock valve springs & rockers. *3: Shim kits available.
*4: Cam sold in front & rear sets. *5: Cam specs taken at lifter. *6: Includes adjustable cam timing sprockets.
*7: Auto-decompressor on exhaust cam. *8: Uses stock auto-decompressor mechanism.
*Please visit our website for current prices E205
E-mail: sales@oro2u.com
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