5.5 Button Flywheel Pro & V-Drive Ext. Balance

The Quarter Master 5.5 Button Flywheel Pro & V-Drive External Balance (SKU: QTR505171SCZZ) is a precision-engineered clutch component designed for high-performance racing and modified street vehicles. It is ideal for serious enthusiasts and professional mechanics working on drag racing builds, road race platforms, and high-horsepower engine swaps where OEM clutch components may not meet performance demands.

This flywheel assembly features a 5.5-inch button pattern that integrates seamlessly with Pro-series clutch discs and pressure plates. The external balance design ensures compatibility with specialized crankshaft harmonic balancers and compensators, enhancing performance in both high-boost and naturally aspirated racing applications. Its lightweight yet durable construction minimizes parasitic losses, allowing for faster engine spooling and improved throttle response.

Builders installing this flywheel will benefit from its ability to counterweight independently of the crankshaft, which reduces reciprocating mass and maintains precise rotational harmony during high-RPM acceleration and deceleration cycles. This makes it a critical component for those looking to maximize performance in competitive racing environments.