M20/M21 3rd Gear 27-Tooth

The USA Standard Gear ZMMUNWT297-11 is a manual transmission 3rd gear designed as a reliable replacement for Muncie M20 Wide Ratio and M21 Close Ratio transmissions. This 27-tooth gear is engineered for enthusiasts of classic American muscle cars who require precision and performance in their drivetrain. This replacement gear is specifically compatible with Muncie M20 and M21 transmissions. It is important to note that the USA Standard Gear ZMMUNWT297-11 does not fit M22 Rock Crusher transmissions. The product includes a list of compatible classic vehicles, such as the Chevrolet Camaro (1967-1974), Chevrolet Corvette (1966-1974), and Buick Century (1973-1974), among others. Owners have reported straightforward installation and a perfect fit, with one user noting smooth transitions and the elimination of grinding issues after installation. The ZMMUNWT297-11 is built to meet rigorous standards, aiming to ensure that classic cars can shift smoothly and efficiently, enhancing the overall driving experience.