motor
The OPS SFV21B or Radical motor is the fastest motor I have ever run and seen in my many years of racing I ran a GRP carb with 6mm restrictor and it still rips. Look at the drilled out light weight piston, look at the front of the crank it is drilled out for lightness very trick stuff. On a gate start at NitroX at the Nitro pit I never got out run to the first turn......