MIP introduces the ultimate top shaft for the Team Associated B5 & T5 vehicle line, the MIP 17.5 Eco All-in-1 Topshaft! Why is it called “All-in-1”? Well because it works with the original 3-gear rear motor, 4-gear mid motor, 4-gear V2 mid motor, 3 gear mid motor, and the MIP Box. How is this possible you ask? With a little bit of engineering creativity MIP was able to fit the necessary bearing sizes on one top shaft. Along with the 5-in-1 capability, the contact surface is 30% narrower than normal, equating to less overall drag/contact patch on the idler gear. If that isn’t enough, the All-in-1 Topshaft is the lightest on the market today coming in at a feather light 3.8 grams.