By 1937, Indian had an advantage over Harley Davidson. Magneto ignition and improved engine performance was giving the stock Indian an edge. In addition, Indian also gave their riders a paycheck.

By mid-1937, Harley Davidson reacted to their decline by inducing rule changes to level the playing field. They also developed a recirculate oil system and improved valve timing in their motors. They also updated their obsolete transmission. Ahead were the best years for Harley Davidson. This 1937 model WLDR features these improvements. It also features the long distance large capacity fuel and oil tank.

The Wheels Through Time Museum currently maintains a stock of seven WLDR models, the predecessor to today’s modern racing dirt track model.