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CLICK HERE to customize your own Yamaha
DYNO JET POWER COMMANDER APPROVED TUNING CENTER 
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- Roller tappet assembly features a mechanical lifter and precision-machined, heat-treated steel tappet bodies
- Relocated pushrod seat heights result in less weight, improved valve train geometry and reduced tappet guide block wear
- Much lighter than stock
- Chromoly steel pushrods ensure that a matched assembly provides the performance and durability Crane offers
NOTE: Requires rocker box removal to install.
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