Benefits of using NV4500 brass synchronizer rings versus the manufacturers carbon fiber synchro rings.
Synchronizer rings are used in manual transmissions which allow the engagement to be smooth between the gears. New Venture Gear starting manufacturing the NV4500 transmission in late 1992. At that time they thought that the use of a carbon fiber lined synchro rings would hold up and be the best option for this transmission. Over the years we have found out that they were wrong.
Carbon fiber rings sound strong and you would think they would hold up well in the Dodge Ram and Chevy Silverado pickup trucks. These transmissions with the carbon lined synchros require a special fluid from the manufacturer which is very expensive and has to be used to help prevent the rings from chipping. We have found that these rings will start to wear and chip over time and eventually cause the transmission to grind and cause problems.
Solid brass synchros have been used by us for may years now. We have spent a lot of time and money to realize that the solid brass ring is the best way to go. Not only can you use a brand name full synthetic fluid which is less expensive but they also have been holding up. The majority of our customers are pulling heavy loads with their trailers and are pleased with the performance and the results from our NV4500 transmission. Upgrading the synchronizer rings to the solid brass is just one of the many upgrades we do at Smart Parts Automotive. Check out our transmission at: