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Get up to four degrees of timing adjustment with Speedmaster adjustable timing pointers
more stable valvetrain operation
The main difference is that there is an open area under the plenum chamber
They feature aluminum construction
look no further than Speedmaster
Polished Aluminum Plain Valve Cover Breather (1" Neck Push In) Get up to four degreesThese aluminum push in breathers from Speedmaster are just the thing to prevent oil splash while adding some style. They are available in plain and ball milled designs to best suit your tastes and match your ride. Speedmaster breathers keep your crankcase properly vented and add a little shine under the hood. They are available in a wide variety of styles for many applications.
