Supertech Performance RET-BMB48-TE Titanium Valve Retainer for BMW B48 Engine

The Supertech Performance RET-BMB48-TE is a precision-engineered titanium valve retainer designed specifically for BMW B48 and B58 turbocharged engines. This high-performance component is an essential part of aftermarket valve train upgrades for enthusiasts building high-revving performance engines.

Key Features:

• CNC-machined from military-certified 6AL4V grade titanium alloy for maximum strength and minimal weight
• Precision engineered for exact fitment with Supertech SPR-FE20BE beehive valve springs
• Significantly lighter than OEM steel retainers, reducing valvetrain mass and improving high-RPM performance
• Designed to prevent valve float and maintain positive valve control at elevated engine speeds
• Compatible with BMW B48 and B58 engines found in Mini Cooper, BMW 340i, Toyota Supra A90, and other applications
• Sold individually - typically used in sets of 8 to 12 depending on engine configuration

Supertech retainers are manufactured to the highest standards and are trusted by professional engine builders worldwide. When paired with upgraded valve springs, these titanium retainers enable your engine to safely rev higher and support more aggressive camshaft profiles. Perfect for street performance, road racing, drag racing, and rally applications where valvetrain reliability is critical.