Performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Performance spools come with a one year warranty against manufacturing defects.   

Application: Dana 80 

Axle Spline: 37

Compatible gear ratio's: 4.10 and numerically higher (4.10, 4.63, 4.88, etc.)