Youth (ages 10 & under) – 3 Lap Heats & 4 Lap Features
50cc (chain & shaft) (TT)
65cc (TT)
Quad 90cc & under (TT)
Youth (Ages 15 & Under) – 4 Lap Heats & 6 Lap Features
85cc (TT)
Super Mini (TT)
125cc to 250cc Knobby (TT)
Quad Up to 125cc (TT)
Quad up to 250cc (TT)
Bike Classes – 4 Lap Heats & 6 Lap Features
Boonies/Pull Start – (OVAL)
Open Pit Bike Class – 110cc or less (OVAL)
MadDawg – Stock – 150cc air cooled (TT)
MadDawg – Unlimited (TT)
125 – 250 Knobby (TT)
Knobby Open (TT)
250AM (OVAL)
30+
40+
50+
60+
70+/Vintage (OVAL)
*Open AM/Pro/Pro Singles/Vintage (OVAL)*
*Women/450AM/Open Pro/Open Pro Twins (OVAL)*
Quad Classes – 4 Lap Heats & 6 Lap Features
Up to 350cc (TT)
Up to 400cc (TT)
Up to 450cc Stock (TT)
Up to 450cc Modified (OVAL)
SXS – 4 Lap Heats & 6 Lap Features
SXS – NA (TT)
SXS – Turbo (TT)
Quad (Up to 400CC)
Quad Youth (Up to 125CC)
50CC Shaft / 50CC Chain
Quad Youth (Up to 250CC)
85CC
65CC
125-250 Knobby (Youth - 15 & Under)
Quad 90CC & Under
Super Mini
125-250 Knobby
Mad Dawg - Stock
Open Am/Pro/Pro Singles/Vintage Pro 600/Hooligan
Quad (Up to 450CC Stock)
30+/40+/50+/60+/70+/Vintage
Mad Dawg - Unlimited
Pull Start Long/Short
Youth Open Pit Bike (110CC or Less)
Open Pit Bike (110CC or Less)
250AM
Knobby Open
SXS
Open Quad
Quad Youth (Up To 400CC)
Quad (Up to 350CC)
SXS - Turbo