TROG 45" Class (1952 or older)

TROG 45” Racer Requirements:

Riders must be 18 years or older and have participated in at least 3 vintage circuit races prior to this event registration.  Please provide the name, location and date of the last 3 races you participated in.

All Vintage Racers Must Wear:

o   Period correct (1929-1952) riding gear including:

§  Appropriate Helmet

§  Jersey (preferably black, no bright colors) or Leathers

§  Boots above the ankles

§  Gloves

§  Long Pants

§  Eye Protection

TROG 45” Motorcycle Requirements


  • 1952 or older American made 45" Flathead Engines. Exception for Harley-Davidson 45 engines: Due to the fact that Harley 45 Flathead engines are all basically the same throughout, we will be allowing motors built up from later Harle 45 Solo and Servi-Car cases upon review.


  • Period Carburetors. Linkert or other factory or period (1947 and older) carb. Absolutely NO LATE MODEL CARBURETORS… No Mikuni, S&S, etc.


  • Harley-Davidson– OEM Rigid. Indian– OEM Rigid or stock sprung rear (40-47). Other American brands– OEM frames


  • Period Forks. Harley Springer, Indian Girder or Leaf Spring


  • No Lights


  • Period timers, distributors and magnetos. Exception on magnetos: Older Sportster type, Morris or Joe Hunt type magnetos are OK with approval. None of those modern looking magnetos.


  • Period transmission. No blatantly late model or aftermarket transmissions.


  • Period Hand Shift, Foot Clutch – no “Jockey” style ratchet lids, no aftermarket chopper style clutch pedals, no “Cheater” hand clutches
  • Harley-Davidson – Tank shift
  • Indian or other American Motorcycle – Tank shift or Factory off the transmission (i.e. Indian Scouts), Crocker, etc.


  • Period Mechanical Drum– No disk brakes, or modern hydraulic drum brakes


  • Period wheel and hubs – No late model hubs, No Aluminum Wheels


  • Period Tires with Period Tread – Aggressive OK (i.e. Grasshopper, Firestone ANS, etc.) Absolutely NO MOTOCROSS KNOBBIES, paddle style, or modern tread tires permitted


  • Period style paint that emulates the time period. No late model tank graphics, emblems, etc. Bikes can be shiny or crusty as long as they are Period Correct. No blatant “Rat Rod” style paint jobs please.

Number Plates or Painted Numbers

  • Period Number Plates with racing number clearly visible on both sides of the bike and front fork (if possible). Period style number plates, No yellow plastic Motocross plates with zip ties.  Paint or shoe polish on both sides of the gas tank is OK if you can’t do plates.