Billet Aluminum Head Breather Valve cover for Honda XR/CRF CT Z 50 70
Condition: Brand New
For Pit bikes, Honda XR/CRF 50's and 70's, Chinese clone engines with this style of Valve adjuster cover. 2 bolt hole design.
When you engine revs up, the gases in your crankcase are vented through the crank vent at the back of the engine. The stock cylinder head is not vented and pressure builds as oil and gases are pumped through the oil passages. As pressure builds the force inhibits the engines ability to rev freely.
Add one of these billet head breathers and let this trapped pressure escape and your engine will rev faster and higher.