jeddroy It all depends what kv you buy, what car you have, what gearing you have, what size tyres, what electrics your running etc, this can't be answered as there are so many things to take into account, put it this way they are fast in my lc12b1 and my extended losi mini 8ight.

jeddroy Length of Hex extender is 25.5mm Length of nut is 25mm Length of head on nut is 8mm Diameter of nut is 5mm Length of pin is 10mm Diameter of pin is 2mm Hope this helps

jeddroy The inside diameter is m4, 4mm, I fitted these on my scx10ii but the driveshafts were too short so I bought some m4 x 25 grub screw and some m4 x 18 inner threaded standoffs rods and extended my cvds.

jeddroy On amazon it says the original motor is 2847 so if I were you I wouldn't get this 2440 as it may be too small in the circumference (24) Instead I would opt for the racerstar 2845, I tried to post the link to it being sold on this site but it said I couldn't post links to other sites, lol.

jeddroy My brother in law farts all the time so this is a great present for him, whether it's inappropriate or not is a personal choice, i find it funny

jeddroy I'd say any age from when they have knowledge of how things work, my son was playing with cars of this calibre when he was 5 years old, you should be able to turn down the speed on the handset providing you get one that has epa, ( end point adjustment )

jeddroy Cvds are the same as I use the cvds from this car in my emb1

jeddroy They do fit rear also