  Harry said it all. What a wonderful hop up. Thank you rpm. Funny that you can now get the trans (that actually works lol)that proline should have built for about 00$ total including gears and bearings and an associated slipper setup... Msrp is 00$ Is that $00 from the discounters?  Harry said it all. What a wonderful hop up. Thank you rpm. Funny that you can now get the trans (that actually works lol)that proline should have built for about 00$ total including gears and bearings and an associated slipper setup... Msrp is 00$ Is that $00 from the discounters?  Don't tell RPM, but I would pay even more just so I don't have to deal with all the other failed attempts out there.  Hopefully somebody has a definitive answer for this. I'm guessing it's yes, but would like to know for sure. Will the FLM sealed diff work in the standard Traxxas trans? If so, that's gonna be my new Slash setup. RPM trans, FLM diff, and TRX steel idler along with the STRC top shaft/AE slipper. Perfect setup IMO.  My only concern with the RPM would be if there's too much flex in the housings. RPM is known for their flexible suspension parts. Hopefully the trans cases will be beefy enough that it won't be an issue. Plus, having the arm mounts separate from the trans cases should reduce a ton of stress on the trans cases.  