
Yes, if you're installing the NWF VF2 EcoCrawler in a vehicle with a manual transmission, upgrading to the stiffer detent spring is highly recommended. This upgrade, found in the shift forks of transfer cases originally designed for electric shift, significantly improves shifting smoothness and overall engagement. If your transfer case isn't from an electric shift model, you can purchase the recommended spring using these details: Part Name: Compression Spring, Electric Shift; Toyota Part Number: 90501-18091. Installing the stiffer detent spring enhances the performance and extends the lifespan of your EcoCrawler system.


