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2021-Grands-ScheduleThe 2021 Sprint GrandNationals

IKF Duffy TrophyThe ‘Duffy’ is the most prestigious trophy in grassroots kart racing, and once a year the International Kart Federation holds its annual IKF Sprint GrandNationals. The names who call themselves Duffy winners are a who’s who of motorsports and the distinction of being an IKF national champion solidifies any racer’s legacy in the sport.

DATE:  October 15-17, 2021

VENUE:  Prairie City Kart Track

EVENT SCHEDULE

PRE-Entry Closed – You can still sign up at the Reg Desk.

Host Hotel (Marriot)

Pit Passes will be sold on site.

 

Event Format

  • WEDNESDAY – NO PRACTICE
    • 9am-5pm – Sponsor/Team Move-in
  • THURSDAY – Move-In, Unofficial Practice
    • 6am – Gates Open
    • 7am-5pm – Registration Open
    • 9am-5pm – Unofficial Practice
  • FRIDAY – Official Practice. Evening BBQ sponsored by Rocklin Harley-Davidson and RLV.
    • 6am – Gates Open
    • 7am-5pm – Registration Open
    • 8am – Official Practice Starts
    • 11am-4pm – Tire Desk Open
    • 530pm-‘You’re full’ – Free BBQ
  • SATURDAY – Morning Warm-Up, Qualifying and 2 Heats.
    [Progressive]  You will start each heat based on previous finish, post penalties and tech.

    • 6am – Gates Open
    • 630am-8am – Registration Open
  • SUNDAY – Morning Warm-Up, 1 Heat and Finals
    You will start the final based on finish in Heat 3, post penalties and tech.

    • 6am – Gates Open
    • 630am-8am – Registration Open

 

Pre-Event Practice

KPX will be hosting their Season Finale at Prairie City the weekend before.
There will be an unofficial Thursday Practice.

 

Race Classes

IAME Engines will use current SKUSA Rules.

Mini Swift (9-13*)
sponsored by Leading Edge Motorsports

  • IAME Mini Swift 60 / 245 lbs
  • Evinco Blue
  • #100-199

LO206 Cadet (7-13*)
sponsored by SpeedSense Motorsports

  • Briggs LO206 / 240 lbs Green Slide
  • Evinco Blue
  • #200-299

KA100 Junior (11-15*)
sponsored by Racer Motorsports

  • IAME KA100 / 320 lbs  +22mm Factory Header
    This class is IAME KA100 only
  • Evinco Blue (7.10 R)
  • #800-899

LO206 Junior (11-15*)
sponsored by Nash Motorsportz

  • Briggs LO206 / 310 lbs Black Slide
  • Evinco Blue (6.0 R)
  • #400-499

 

KA100 Senior (14+)
sponsored by West Coast Motorsports

  • IAME KA100 / 360 lbs
    Rok VLR / 360 lbs
  • Evinco Blue (7.10 R)
  • #900-999

LO206 Senior (14+)
sponsored by Nevada Kart Sport

  • Briggs LO206 / 360 lbs
  • Evinco Blue (6.0 R)
  • #600-699

 

LO206 Master (30+)
sponsored by Cole Nelson Racing

  • Briggs LO206 / 390 lbs
  • NEW Evinco Blue (6.0 R)
  • #300-399

LO206 Grand Master (50+)
sponsored by Thomas Fogarty Winery

  • Briggs LO206 / 390 lbs
  • Evinco Blue (6.0 R)
  • #500-599

80cc Shifter (14+)
sponsored by Big Z Jerky Co.

  • Honda CR 80/85  / 375 or 395(w/FWB) lbs
  • NEW Evinco Blue (7.10 R)
  • #10-99

*All drivers 12yo and under must wear a Neck brace & SFI-approved chest protector.

 

Race Fuel

  • LO206: 87 Octane from the Chevron on corner of E Tidwell and Broadstone in Folsom.
  • All other 2-stroke classes:  Sunoco 110 and Elf HTX 909 .
  • Sunoco will be available at the track. Use of unauthorized/specified fuel or oil will result in exclusion from event with no appeal. Fuel tests may be conducted at any time during event. Failure to provide a requested sample will result in immediate exclusion from event with no recourse.

 

Tire Information

  • ALL event tires are Evinco, including practice.
  • All classes must use same tires for the duration of event (all competition sessions).
  • Rain tires must be MG only.

 

Sponsors

 

 

2019 IKF GrandNationals Highlights