From a press release from AHRMA:

Jack Hateley memorial race at AHRMA Willow Springs dirt track

A Triumph-only race memorializing famed Southern California tuner Jack Hateley will be held as part of the American Historic Racing Motorcycle Association’s June 5 national dirt track at Willow Springs Raceway in Rosamond, Calif.

The “Triumph Challenge Race” will be open to any pre-1975 Triumph eligible for AHRMA’s Sportsman dirt track class.

Hateley, who gained fame wrenching for his son, former AMA national number 98 John Hateley, and Triumph TT ace Eddie Mulder through the 1960s and ’70s, died in April at age 75.

Modern 500cc and Open support classes, as well as three Vintage Novice divisions, also will be offered alongside AHRMA’s normal array of classes for motorcycles built up to 1981.

The night race on the 3/8-mile Walt James Stadium oval will be round 10 of The Classic MotorCycle/Metro Racing Dirt Track Series. Event sponsors include Cal Coast Motorsports, Dodge Brothers Racing and Rod Lake Racing.

Gates open at noon, with sign-up at 1 p.m., practice at 3 and racing at 6.

The weekend also includes two rounds of AHRMA Pro-Flo/Progressive Suspension road racing Saturday and Sunday, June 5 and 6, on the Willow Springs road course as part of Garage Company’s Corsa MotoClassica. Competing will be vintage machines, Vintage Superbikes and modern Sound of Singles/Battle of Twins/Sound of Thunder racers.

For entry and rule information, visit www.ahrma.org or call 615-851-3678