TiAL MVR 44mm Wastegate | V-Band Precision boost control is non-negotiable in a serious turbo system. The TiAL MVR 44mm Wastegate is engineered to deliver stable, repeatable boost management in extreme conditions—from high-boost street builds to all-out drag racing applications. Advanced Thermal Control for Extreme Use The MVR44 features integrated water-cooling capability with -4AN inlet and outlet fittings. A small amount of coolant cycles through the actuator housing to regulate temperature during prolonged high-heat operation—critical in motorsport environments where thermal stability directly impacts consistency and durability. Designed for Maximum Installation Flexibility Five total air ports (three lower, two upper) eliminate the need to rotate the actuator housing for fitment. Simply plug any unused ports using the included fittings. This design simplifies plumbing, especially in tight turbo layouts common in compact motorcycle applications. The compact body and V-Band inlet/outlet connections further streamline installation while ensuring a secure, leak-free seal. Motorsport-Grade Construction Every component is built to withstand extreme temperature, pressure, and corrosive conditions: High-temperature alloy valve Stainless steel valve housing, seat, and bushing Stainless steel actuator spring for consistent boost pressure under heat High-temperature, silicone-reinforced diaphragm CNC-machined billet aluminum actuator housing (color anodized) All stainless steel hardware 304L stainless weld flanges The included racing valve stem features a wear-resistant coating designed to withstand corrosive lead oxides produced by leaded race fuels. Why Proper Boost Control Matters Overboost doesn’t just risk engine damage—it can reduce power. When a turbocharger exceeds its efficient operating range, intake air temperature rises sharply, reducing charge density and horsepower. The MVR44’s optimized actuator-to-valve area ratio delivers precise control and wide dynamic flow capacity to maintain consistent, efficient boost levels. SPECS Valve Size: 44 mm Inlet Flange: 47.6 mm OD (1.875″) Outlet Flange: 44.5 mm OD (1.75″) Air Ports (5): M10 x 1.0 Water Ports (2): M8 x 1.0 Spring Range Included: 0.2 – 1.5 bar Body Material: Billet Aluminum Flange Material: 304L Stainless Steel INCLUDED MV-R 44 mm Wastegate Assembly Two TiAL -4AN removable water fittings Inlet V-Band clamp and flange Outlet V-Band clamp and flange MV-R valve seat Two TiAL air fittings Plugs for unused air ports One of each available spring Color Options Black anodized units are typically in stock and ready to ship. All other finishes may require additional lead time. Available anodized colors: Black – TiAL Part #002949 Silver – TiAL Part #001930 Red – TiAL Part #002951 Blue – TiAL Part #002948 Purple – TiAL Part #002950 For current availability or estimated lead times on non-black finishes, contact us before ordering. TiAL MV-R Wastegate Spring Rates Old Spring Color(s) New Spring Color(s) Spring Ratings Gold Red 4.35 psi 0.3 bar Maroon Blue 5.80 psi 0.4 bar Brown Gold Green Red 7.25 psi 0.5 bar Brown Maroon Green Blue 8.70 psi 0.6 bar Grey Gold Black Red 10.15 psi 0.7 bar Grey Maroon Black Blue 11.60 psi 0.8 bar Brown Gold Grey Green Red Black 13.05 psi 0.9 bar Brown Maroon Grey Green Blue Black 14.50 psi 1.0 bar Beige Gold Grey Yellow Red Black 15.95 psi 1.1 bar Plain Copper Gold Brown Plain White Red Green 17.40 psi 1.2 bar Plain Copper Maroon Brown Plain White Blue Green 18.85 psi 1.3 bar Plain Grey Gold Beige Plain Black Red Yellow 20.30 psi 1.4 bar Plain Grey Maroon Beige Plain Black Blue Yellow 21.75 psi 1.5 bar About TiAL Sport TiAL Sport USA designs and manufactures high-performance turbocharging components with an uncompromising focus on engineering integrity. Known for super alloy-based wastegates and precision-machined components, TiAL products are built in the USA to meet the demands of serious performance enthusiasts and motorsport competitors.
