BBM R/F 1.810in Exhaust Valves

The Manley BBM R/F 1.810in Exhaust Valves are a premium set of eight stainless steel race exhaust valves engineered for Mopar B-series and RB-series engines. These precision-manufactured valves are designed to maximize flow characteristics and durability in high-performance and racing applications where standard OEM components cannot withstand sustained elevated RPM, boost pressure, and thermal cycling.

Each valve features a 1.810-inch head diameter paired with a 0.372-inch stem diameter and measures 4.908 inches in overall length. The Race Flo design optimizes exhaust gas evacuation by improving port flow dynamics and reducing restriction at high valve lift. Constructed from premium stainless steel, these valves resist corrosion, thermal fatigue, and the mechanical wear inherent to sustained high-RPM operation. The precise stem diameter ensures tight tolerances with OEM and aftermarket guides, maintaining consistent sealing and longevity across engine cycles.

These valves are specified for engine builders, drag racing programs, and street performance enthusiasts restoring or upgrading classic Mopar B-block and RB-block platforms. Whether assembled into a fresh rebuild, a stroker combination, or a boost-fed application, they provide the thermal stability and flow efficiency required to support increased air volume and combustion pressures. The complete eight-valve set eliminates the need to source valves individually, streamlining parts procurement for full-engine builds.

Manley is recognized in the aftermarket performance industry for manufacturing valvetrain components to exacting tolerances. These race-spec exhaust valves represent the brand's commitment to reliability and flow optimization in competitive and high-output engine environments where component failure directly impacts performance and safety.