Mystfree Rocker Box / Cylinder Head Breathers. Fits Twin Cam 1999-2017. JGI-25225-70-XM * ECE/SAE Compliant For HDI

* ECE/SAE Compliant For HDI Models

The new RS528 grind has been carefully designed and tested by Zipper’s engineering to yield the best possible riding experience while producing the most Torque and Horsepower for a bolt-in camshaft

Fits stock 3-snap visor configuration on most novelty and DOT helmets

SS330-0017)

* High-quality

Mystfree Rocker Box / Cylinder Head Breathers. Fits Twin Cam 1999-2017. JGI-25225-70-XM * ECE/SAE Compliant For HDIFeatures & Benefits: * Machined 6061 T6 billet aluminum construction * Helps oil drain more efficiently into the rocker * Reduces oil misting coming from the engine breathers * Made in the U. S. A.