+8 chassis, +8 body, V2 shocks, aluminum 0 degree hubs in the rear, v2 slipper assembly, ballast weight, for starters. I know that they make a chassis conversion kit. I have seen it for sale on Amainhobbies.

After all that, I may just buy a whole new kit!

Where does everyone measure ride height on their b4?

In the front i measure mine as far forward as i can on the flat part of the chassis and in the rear under the transmission case

Thank you! I checked an older b4 manual and it says the same thing as well. I've been using a losi gauge, does anyone have a more precise method? This is my carpet side coming out :)

The only difference on the worlds edition is the longer chassis, battery strap, and body. The b4.1 already had the hubs, v2 slipper, and v2 shocks while the ballast weight is an inexpensive option part.

The original B4.1 doesn't come with 0 degree hubs, the worlds edition does. Thats 30 bones right there.

No, but you can just use the 2.5 degree toe block and shim the hub further forward to make up the difference in wheelbase.

I think 69 spur and 31 pinion is the smallest. But I dremeled the slots out on the motor plate and I am running 69 spur and 28 pinion with a 17.5 motor on a small indoor track. I think that is about the smallest pinion I can run cause the motor is just about all the way up against the diff case.

Do ett!!!!

you can do that, but 2.5 inner plus .5 outer does not equal 3 inner. Changes to the inner of the car are more drastic as it changes the entire arm angle.

All the parts I ordered should be here today with the exception of the Traxxas retainers; apparently they shipped from the Illinois Tower vice the Nevada and wont be here in time to race on Friday and I cant find them locally. Sucks to be me!

2.5 inner blocks with .5 degree hubs give you the exact same angle at the tire as a 3 degree inner block and 0 degree hubs. Without moving shims, the 2.5 inner block will place the rear axle farther back, but the toe scenario to scenario is no different.

I understand that it is the same at the tire. But the angle of the arm does indeed change which proves to be a more drastic increase. Most will not tell the difference, but there is one.

More drastic in what way? What force on the chassis is being magnified by such a change in geometry? What does that mean for different circumstances on the track? I'm not arguing against you, but you are making blanket statements that are easily mis-interpreted. Technically the car is .003 inches wider with the 2.5 block, the arm becomes more trailing by half a degree, and without adjusting shims increases the wheelbase by .05 inches.