Home of the US 125 Grand Prix National Championship® and 250 Grand Prix National Championship
The official 250GP class sponsor of the USGPRU
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Rider Spotlight:
Anthony Digati
Gearing chart
Some recommended gearing suggestions for various tracks. Click on the track's name for more information about it.
Track
125
250
Autobahn Country Club (south)
? / ?
13 / 39
Barber Motorsports Park
15 / 36
14 / 41
BeaveRun (north)
16 / 37
? / ?
Buttonwillow
15 / 37
? / ?
California Speedway (infield)
14 / 39
? / ?
California Speedway (oval w/ infield)
16 / 37
14 / 37
Firebird Raceway (east)
15 / 40
14 / 40
Firebird Raceway (main)
? / ?
? / ?
Heartland Park
15 / 36
15 / 40
High Plains Raceway
? / ?
? / ?
Infineon Raceway
15 / 36
14 / 41
JenningsGP
15 / 36
? / ?
Las Vegas Motor Speedway (classic)
15 / 37
? / ?
Las Vegas Motor Speedway (infield)
? / ?
? / ?
Loudon
15 / 38
14 / 44
Mid Ohio Sportscar Course
16 / 37
15 / 40
Miller Motorsports Park (East)
? / ?
? / ?
Miller Motorsports Park (full course)
16 / 37
? / ?
Mosport International Raceway
? / ?
15 / 38
NJ Motorsports Park - Thunderbolt
? / ?
? / ?
NJ Motorsports Park - Lightning
? / ?
? / ?
Oakhill Raceway
14 / 38
? / ?
Palm Beach International Raceway
? / ?
? / ?
Portland Int’l Raceway
17 / 38
? / ?
Reno-Fernley
? / ?
? / ?
Road America
16 / 36
15 / 38
Road Atlanta
16 / 36
15 / 37
Shannonville Motorsports Park
? / ?
? / ?
Streets of Willow (125 only)
16 / 36
? / ?
Summit Point
16 / 37
15 / 38
Texas World Speedway
15 / 37
? / ?
Thunder Hill
15 / 37
? / ?
To be announced
? / ?
? / ?
Virginia Int’l Raceway (VIR)
16 / 36
15 / 39
Willow Springs Int’l Raceway (250 only)
16 / 36
14 / 37