I really want 4 speeds. 1 for the buggy 1 for the truly and 2 fir backup. That's jus thow I roll. I started Out with 1 and then it got wore because I like to race so I bought 2 more and then I wanted 2 new speeds for the nitro challenge. If you knew me then you would understand. That's how I roll. I sold 3 of them and blew one up and still have one. They still had tons of life in them.