Manley 73172 Race Roller Lifter Kit -.005 Undersize

The Manley 73172 Race Roller Lifter Kit is a high-performance, precision-machined roller lifter set engineered for demanding racing and high-performance street applications. Offered in a -.005" undersize specification, this kit is designed to accommodate engine blocks that have been align-honed or line-bored to tighter tolerances, ensuring a proper fit where standard-sized lifters may be too loose.

Key Features:

• -.005" Undersize Diameter — engineered for bores machined to undersize tolerances for a precise, controlled fit
• Race Roller Design — reduces valvetrain friction and wear compared to flat-tappet lifters, allowing for more aggressive cam profiles
• High-Quality Construction — manufactured to Manley's exacting standards using premium materials for durability under high-RPM and high-lift conditions
• Reduced Valvetrain Friction — roller tip design translates to improved power output and reduced heat generation
• Performance Application — suited for circle track, drag racing, and high-performance street builds requiring precise lifter bore fitment

Manley Performance has been a trusted name in high-performance engine components for decades, producing parts that meet the rigorous demands of professional motorsports and serious engine builders. The 73172 kit is an ideal solution when your engine's lifter bores require an undersize component for a proper, rattle-free fit.