
The Tundra has a very tall overdrive in 5th AND 6th gear to turn low RPMS. This is especially important for today's vehicles as they feature tall factory gearing and overdrive transmissions which are less tolerant to increase in tire size or the weight of added accessories. Re-gearing the differentials in your vehicle is the only way to get your vehicle back into its optimal operating RPM range, thus improving performance and reducing strain on your vehicle's drivetrain.

If you've fitted larger tires to your vehicle then you are likely experiencing a loss in performance, fuel economy, and more constant transmission gear “hunting" - This is because the larger tires reduce your engine's RPMs below the optimal power band. Nitro Gear and Axle's complete 5.29 gear kit is designed to improve performance and fuel economy for the 2007-2021 Toyota Tundra.
