71-85 12A Rx7 Rear Type I Hardened Stationary Gear (10011) - NLA
No Longer Available.
Our Racing Beat Type I Modified 12A Rear - Standard-Ungrooved--Stationary Gears are strongly recommended for engines which are regularly running near or above 8,500 RPM. These gears have had several machining modifications performed, as well as heat-treating of the teeth to improve fatigue resistance and yield strength.
Stock bearing is installed.