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Owosso Kart Speedway - OKS

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Race Day Forecast

Track Status

Green Flag Racing

Winners August 6, 2013

Recent AnnouncementsSee All Announcements
April 28th Kart Race Season Opener

Kart race season opener Friday April 28th. Gates open 4pm, Practice 6:30pm and Racing 8pm. $6 general admission, $18 family rate up to 4 people or $12 pit passes. Come out to OMP for a family fun night of racing.

Posted: Apr 25, 2017
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Open Practice Sat. April 22nd

Sat. April 22nd OMP is having a open practice for Motorcycle, Quads and Karts form 11am-5pm. $20 per rider $5 per pit member.

Posted: Apr 4, 2017
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Open Class Rules Changes

All Karts must have a muffler

Rotary valve or Reed valve Two-Stroke Cycle Engines

1. Single Cylinder Small Displacement 2-Cycle Engines

  • · Maximum displacement 199cc
  • · Minimum weight 200 lb. plus one pound per cc or fraction of a cc.

2. Single Cylinder Large Displacement 2-Cycle Engines

  • · 200cc to maximum of 275cc maximum displacement allowed.
  • · 200cc to 255cc minimum weight is 400 lbs.
  • · 256cc to 275cc minimum weight is 430 lbs.

3. Multiple Engine 2-Stroke (No common crankcase multiple cylinder engine.)

  • · For engine combinations up to 229cc the minimum weight is 200 lbs. plus one pound per cc or fraction of a cc.
  • · For engine combinations 230cc to 275cc the minimum weight is 430 lbs.

Flat Head Four-Stroke cycle Engine

1. 190 lbs. plus one pound for every 3cc or fraction of a cc. multiple engines or cylinders are permissible.

2. 500cc maximum total displacement with a tolerance of 10cc when checked

Pistion Port Two-Stroke Cycle Engine

1. 130 lbs. plus one pound for each cc or fraction of a cc.

2. Multiple engines or cylinders are Permissible

Overhead Cam (SOHC or DOHC) Four-Stroke Cycle Engine

1. Overhead cam engine or engines, multiple cylinders permitted. 500cc maximum displacement +/- 10cc when checked.

2. Minimum weight as follows; 205 lbs. plus 1 lb. for every 2 cc’s or fraction of a cc. Any engine or combination of engines from 450cc to 500cc are capped at a minimum weight of 430 lbs. unless power adders are used.

Overhead valve (OHV-Push Rod) Four-Stroke cycle Engine

1. 200 lbs. plus one pound for every 2.5cc or fraction of a cc. multiple engines or cylinders are permissible, 500cc maximum total displacement with a tolerance of 10cc when checked.


Posted: Apr 4, 2017
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Our goal at Owosso Kart Speedway is to provide families and friends with a place that’s fun, fair, and affordable with a competitive race environment May through Sept.

Karting is exhilarating, it’s the kind of fun that you can’t match with any ordinary past time.  But one of the most rewarding aspects of karting lies in the preparation and anticipation of trying out your hard work and seeing the fruits of your labor put to the test, against others with just as much desire to win.

Our track at Owosso Kart Speedway consists of a 750’ long x 40’ wide dirt oval with a true 10 degree banking making it fast but safe.  Can’t wait to see you there.

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