Bearing & Piston 2.250

The Bearing & Piston 2.250 from Quarter Master is a precision internal component engineered for high-performance automatic transmission builds and engine modifications. Designed for automotive enthusiasts and professional mechanics working with competition transmissions or extensively modified drivetrains, this bearing and piston assembly represents the kind of critical hardware that separates a reliable modified vehicle from one prone to catastrophic failure. Whether you're building a dedicated drag racing platform, constructing a street-strip hybrid, or restoring a classic with contemporary powertrain technology, this component delivers the durability and precise tolerances required for sustained high-load operation.

Quarter Master's bearing and piston assembly incorporates precision-machined surfaces and engineered clearances to handle extreme pressure cycling and rotational speeds that far exceed stock transmission specifications. The 2.250-inch nominal bore dimension ensures compatibility with a broad range of performance transmission architectures, while the compact 6.15-inch overall length facilitates installation within tight transmission housings. Weighing just 0.63 pounds, this component maintains the critical balance between structural rigidity and reduced rotational inertia—essential when tuning final drive ratios or modifying shift schedules for maximum acceleration response without sacrificing component longevity.

This bearing and piston assembly benefits mechanics and fabricators undertaking serious powertrain development, particularly those upgrading automatic transmissions for increased torque capacity or altered gear ratios. It is commonly specified in custom transmission builds, race-oriented platforms, and restomod projects where factory components cannot tolerate modified engine output. Installation requires proper transmission removal, disassembly to component level, and adherence to factory torque specifications and clearance settings; professional installation is strongly recommended to ensure proper seating, alignment, and long-term reliability in your modified drivetrain.