Champion loop race car?

You talking like loop-de-loop race? Or just roundy round loop race? I'm a fan of Pharadox.

Triple loop race. Yeah, i love Pharadox too but sometimes, Pharadox (Champion car) is not allowed to used. 

try Spectyte

i'm a fan oh pharodox too, but sometimes Spectyte beat Pharodox

see this video for example

https://youtu.be/22tXjnthoIA

The Chevrolater

SHORT WHEEL BASE

Plastic top

Metal Base

Either Clear Plastic ( can have a color tint ) or Glow in the Dark wheels

L X L  ( front and back ) wheels are best.  However  L X XL wheels are good, too.

DO NOT use cars that wheels are over 2 sizes bigger, ex  S X XXL 

Voxxer Racing  

1. Water Slaughter (Battle Force 5)

2. Low Carb 

3. RD-08

4. Drift Tech

5. Spector

6. Govner

7. Buzz bomb

8. Draggin Tail

L X L  ( front and back ) wheels are best.  However  L X XL wheels are good, too.

If you really want to see some examples of proven 'loop cars', check out some of the "Markibal" races in Indonesia on YouTube. They've raced on some incredible multi-loop downhill courses. Lots of plastic-bodied track cars appear to be their favorites.

But my long-time personal favorite for loops & jumps has to be the Paddy Wagon...short wheelbase with it's axles mounted near each end of the chassis and fairly well-balanced. Even that later 'Vintage' series releases seem to perform well.

Fast Cash is also a good casting for racing a track with loop de loops.