I’m very happy with the Method R5 Tune-Up Kit. The most notable changes on the parts in the kit are the star shaped face on the front of the propshaft and the new propshaft spring which is much larger and stiffer than the stock one. It also wraps around the outside of the plunger rather than going on the bottom inside. The increased spring tension is noticeable when you first reassemble the drive train with the tune up kit.
I don’t quite understand the physics behind these changes, but the results were immediately noticeable. Upon initially testing the kit out I saw a substantial increase in FPS, allowing me to drop the operating pressure by quite a bit. It also seemed to improve overall consistency as well. This tune kit even functions well with the brass sfr at its most restricted flow setting.
Overall I am very pleased with the tune up kit and will continue to use it going forward. I’d recommend it to anyone looking to get a bit more performance out of their R5.