WILLOW SPRINGS SUPERBIKE SHOWDOWN
WILLOW SPRINGS INTERNATIONAL RACEWAY
OCTOBER 4, 2025
SATURDAY AM
SCHEDULE
630am: Willow Gate Opens
700am: Registration / Tech Open
715am: Riders Meeting
8am - 1pm: Practice & Race School
3 Groups / 20 Minutes
SATURDAY PM
SCHEDULE
1pm: Lunch / Taste of the Track
2pm: Road Racing
Race Order
New Racer School Mock Race
Formula 40
Vintage Superbike (Classic 80s)
Twins
Modern Superbike (Supersport)
Vintage
Iron Man
5pm: Awards Ceremony
WILLOW SPRINGS SUPERBIKE SHOWDOWN
ROAD RACING FEES
$200 Track Day ONLY
8am - 1pm
$250 Per Rider
New Racer School
RACING FEES
$300 All Inclusive
Practice
Every Race Your Bike(s) Qualify For
Individual Class Racing
$150 / Rider / Class
$100 / Additional Class
GATE FEE
No Gate Fees
FREE OVERNIGHT CAMPING
THANK YOU TO OUR SUPPORTERS!
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LOOKING FOR A GOOD NIGHT'S REST BEFORE HITTING THE TRACK?
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WILLOW SPRINGS SUPERBIKE SHOWDOWN
RACE CLASSES
IRONMAN
Open to all sizes and years. Race prepped bikes capable of sustaining race pace for 20 laps (50 miles)
ULTRALIGHT: Up to 125cc two stroke / 250cc four stroke
LIGHT: Up to 250cc two stroke / 500cc four stroke
MIDDLE: Up to 650cc
HEAVY: Unlimited
MODERN SUPERBIKE
Modified & unmodified "production models" (up to 1000cc max (4 cylinders), 1200cc max (Twin)) on stock platform, with exception to suspension components, exhaust, tires, gearing, etc. (R1's, GSX-R, CBR, ZX-Ninja, S1000RR, Panigale V4, RSV4)
LIGHT: Up to 400cc
MIDDLE: Up to 600cc
HEAVY: Unlimited
600 SUPERBIKE
Highly modified "production models" with displacement ranges determined by 600 Supersport.
1000 SUPERBIKE
Highly modified "production models" with displacement ranges determined by 1000 Supersport.
POWER TWINS – TWIN CYLINDER – ANY YEAR
LIGHT: Up to 400cc Four Stroke
(R3, Ninja 400)
MIDDLE: Up to 900cc Air-Cooled and 660cc Liquid Cooled
(RS660, SV650, Hawk 650, R7, MT-7, Ducati Air-Cooled up to 900cc, H-D XR1200, 2 Stroke GP up to 250cc)
HEAVY: Unlimited Air and Liquid-Cooled
(All Ducati Liquid-Cooled Twins, RC51, All Aprilia Twins, All Suzuki Twins, BMW R9T)
VINTAGE - PRE 1973 AIR-COOLED, DRUM BRAKE MACHINES
LIGHT: Up to 250cc
(CB160, Dt175)
MIDDLE: Up to 500cc
(CB350, Aermacchi 350)
HEAVY: Unlimited
(Norton 750, Triumph 650)
VINTAGE SUPERBIKE - PRE 1983 AIR-COOLED MACHINES WITH ANY PERFORMANCE ENHANCEMENTS
LIGHT: Up to 500cc Four Stroke, 300cc Two Stroke
(CB360, SR500, FT500)
MIDDLE: Up to 650cc Four Stroke, 400cc Two Stroke
(Seca 500, CB400/500/550/650, KZ550, GS650, Alazurra 650cc, RD/RZ350, 650 Motoguzzi & BMW 650)
HEAVY: Unlimited
(KZ1000, GS1000, CB1100, CB900, XV950)
RACE ELIGIBILITY
A RACE LICENSE IS MANDATORY FOR ALL RACERS
Classic Enterprises LLC offers Road Race License reciprocity from most race organizations, private coaches and clubs across the United States of America and from around the world including but not limited to:
Chuckwalla Valley Raceway/CVMA: www.CVMARacing.com
American Federation of Motorcyclists: www.afmracing.org
CCS: www.ccsracing.us
AHRMA: www.ahrma.org
Pacific Track Time: www.pacifictracktime.com
CRA: www.RaceCRA.org
U.S. Motorcycle Coaching Association: www.usmca.org
WERA: www.wera.com
YOUR BIKE MUST BE FULLY PREPPED FOR ROAD RACING
Tech Check List Can Be Found Here: TECH CHECK LIST
