Cylinder Head Fin Dampers
Cylinder Head Fin Dampers, Pack of 10
- Reduces cylinder head fin vibration and noise
- No longer available from Yamaha, OEM part # 278-11161-01-00 or 521-11161-01-00
- sold as a pack of 10
- Picture available for locations on Yamaha R5, DS7, RD250, RD350, RD400.
- NOTE: Dampers are made to fit multiple applications, Some cylinder head fins are closer together than others. Dampers may need to be trimmed down to fit.
- NOTE # 2 Dampers may want to slide out. this is due to the mold release agent from the manufacturing process. Clean the dampers in hot soapy water if they do not want to stay in place.
- R5/DS7 70'-72
- RD250/350/400 73'-78'
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They are a bear to install. But they definitely do their job. It helps to wet them with IPA and use something hard like a screwdriver handle to press them in. Heed the advice to wash with soap first. So many RD's are missing these. They really do make the engine sound better.