Rear End Breather Kit 1.75in. Bar

The LONGACRE Rear End Breather Kit 1.75in. Bar is a clamp-on axle assembly breather designed to manage differential and axle pressure on high-performance vehicles, particularly those subjected to sustained track duty, towing loads, or aggressive acceleration. This aluminum breather system incorporates a remote tube mount bracket and 36-inch hose, allowing flexible routing away from heat sources and contaminants while maintaining effective pressure relief and moisture extraction from the differential housing.

The kit features a 1.75-inch (1-3/4 in) OD tube interface, which accommodates standard axle housings commonly found on drag racing platforms, circle track machines, and heavy-duty off-road vehicles. Black anodized aluminum construction provides corrosion resistance and thermal stability, critical when breather systems are mounted near exhaust components or in salt-air environments. The clamp-on design eliminates the need for welding or permanent modification to the differential housing, making this system reversible and compatible with backup differential assemblies or future upgrades. The 36-inch hose length provides sufficient routing distance to position the breather outlet above the vehicle roofline or forward of the engine bay, minimizing reingestion of expelled differential gases during sustained cornering or acceleration.

This breather kit is engineered for competitors and enthusiasts who run modified powertrains or perform high-G maneuvers—drag racers, road course drivers, and off-road recovery teams. Pressure buildup in sealed differentials leads to oil seepage past seals, fouling brakes and tires while reducing seal longevity. An effective breather system maintains ambient pressure inside the housing, extends seal life, and reduces maintenance intervals between events. LONGACRE is known for precision cooling and fluid management solutions in motorsports applications, and this breather represents the same design discipline applied to differential health.