RevTech Adjustable Breather Valves

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Home > Engine > Rocker Cover Accessories > RevTech Adjustable Breather Valves

RevTech Adjustable Breather Valves

Permit the engine builder to alter breather timing to match the displacement of the motor. Increasingthe stroke or cylinder bore changes the total volume of the crankcase. If the breather is not modified,the cylinders fight the pressure build-up in the lower end that a stock breather cannot relieve.RevTech� offers an all-steel breather valve for Big Twins 1948 thru 1999. It�s designed to replace thestock steel or plastic breather valve and with its removable gear, permits you to dial in the the exacttiming needed to ensure proper scavenging. Comes complete with selection of four different-sizedthrust washers.

Options Our Price

29003 Fits 1948-Early 1977 Engines- Stock Duration
$69.99

29004 Fits 1948-Early 1977 Engines- +10� duration
$69.99

29005 Fits 1948-Early 1977 Engines- +20� duration
$69.99

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