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Official 2027 Class Rules

Class 01

XFWD

Technical requirements for this competition category at OSW Import Fest 2027.

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Category XFWD
Rule sections 5

Fuel

  • All fuels cannot exceed .799 specific gravity.

Intercooling

  • Air intercoolers only

Turbo

  • Single cam engines 2,000lb any turbo size
  • 64/70 2,200lb
  • 67.9mm 2,350lb
  • 73.9mm 2,400lb

Nitrous

  • Cars using nitrous: add 100 lbs

Tires

  • Maximum size 25x9.5-13

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