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Porsche® 911/912E Transmission, Synchro Ring, 1st-2nd Gear, 1972-1986

Porsche® 911/912E Transmission, Synchro Ring, 1st-2nd Gear, 1972-1986

Part #: P901905

Was: $97.99 ea.

Now: $89.99 ea.
In Stock
1972 thru 1986
See applications below for exact details.

Select a vehicle above or use application chart below to ensure this part fits your vehicle.
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  • 911 1972-1977 2ea Required
  • 911 1976-1986 1ea Required
  • 912E 1976 2ea Required
  • The Cure For Hard Shifting
  • 80mm


The synchro rings are friction rings that spin up the transmission to match the drivetrain prior to shifting. This allows the gears to mesh without grinding. As soon as the synchro rings begin to wear, then the gears start to mesh at different speeds, resulting in gear grinding.

Synchro rings should be replaced as soon as gears begin to grind. Failure to do so will result in damage to the sliders and the synchro hubs which are much, much more expensive to replace.

Don't get worn out stressing about crunching gears - replace your synchros.



Make / Model Series Body Notes Year
PORSCHE 911 1st-2nd Gear 1972, 1973, 1974, 1975, 1976, 1977
PORSCHE 911 2nd Gear 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986
PORSCHE 912 E 1st-2nd Gear 1976