yes they are at the end, for the plastic rims.
Getting new 3/32 titanium axles from mbslot. Carrera axle is 50mm long
Then the slot.it magnesium wheels, SIPA18MG (8x17.2) and SIPA19MG(8x10) for back.
The 10 fits 12 tyres. Gears NSR lightweight gears.
The bronze bushes that come with carrera cars fit the 3/32 axle I read somewhere.
I molested 1 carrera cars chassis to get the weight down, so probably do 1 car (the GTR nismo) like above with an Avant slot "blue" motor (the one with 500g/cm torque)
But I just need to see how much I am gonna spend realy, since it will never be a mosler beater to start with..