Steel Driveshaft 39.5in Long 2in Diameter

The Steel Driveshaft 39.5in Long 2in Diameter from Precision Shaft Technologies is engineered for high-performance automotive applications where durability and precision matter most. Whether you're upgrading a street machine, competition vehicle, or restoration project, this solid steel driveshaft delivers the backbone your powertrain needs to transmit torque reliably from engine to differential.

Manufactured from high-grade steel, this 39.5-inch driveshaft features a 2-inch tube diameter—a common OEM and upgrade dimension that balances strength with weight and clearance constraints. The solid steel construction resists bending and torsional flex better than hollow alternatives, ensuring consistent power delivery and reduced drivetrain vibration across the RPM band. At 11.95 lbs, the shaft maintains structural integrity without excessive unsprung weight, critical for vehicles where rotational mass impacts acceleration, braking feel, and suspension response.

Precision Shaft Technologies manufactures to tight tolerances, ensuring concentricity and runout specs that keep your drivetrain smooth and balanced even at sustained high speeds or under hard acceleration. This driveshaft suits builders upgrading manual or automatic transmissions, swapping engines into older platforms, or reinforcing aging driveshafts in classic vehicles.