This product reinforces the 1st, 4th, and 5th gear synchronizer rings, which are weak points of the FS5R30A transmission installed in the BNR32, BCNR33, Stagea 260RS, etc.
Synchronizer rings are an important component for smooth gear shifting. If the synchronizer ring wears out due to aging or other reasons, it can become difficult to shift gears and strange noises can occur.
Gear shifting is possible by matching the rotation speed of the selected gear with the gear to which it is being shifted, but the synchronization of rotation speed is achieved by friction between the synchronizer ring and the gear. Therefore, a high friction force (friction coefficient) of the synchronizer improves synchronization performance and enables quick gear shifting.
The synchronizer rings of this product are made of carbon material, which has a 30% higher friction coefficient than the genuine copper alloy material, allowing for smoother gear shifting from normal use to high load ranges.
Carbon is also superior in terms of durability, reducing wear at high-load ranges to less than 1/10 of that of copper alloy, ensuring a good operating feel for a long time.
The transmission assembly that forms the basis of the customization is brand new, and the carbon synchronizer ring is a high-quality product made by the manufacturer that produces the genuine parts.
In addition, the mounting bolt holes for the push-type release cylinder have been pre-machined, making it easy to install on early model BNR32 vehicles.
