Two-Stroke Classic

k) BELLY PANS: Mandatory on all bikes per AHRMA rule 9.3 (f). l) BODYWORK: Must maintain the period vintage look. NO modern seat pans or fairings. m) Examples of eligible machines and not limited to the following: • Honda CB 750 to 1100, and CBX • Yamaha TZ 750, Yamaha FJ Series Bikes • Suzuki GS Series Bikes • Kawasaki GPZ Series Bikes • Other OEMs with similar configurations *THESE RULES MAY OR MAY NOT MIRROR THE PHILLIP ISLAND

CHALLENGE RULES. IT IS UPON THE RIDER TO BUILD ELIGIBLE

MACHINERY FOR EACH RACE ORGANIZATION.

10.21 TWO-STROKE CLASSIC

MISSION STATEMENT: For Grand Prix or Factory road racing two-stroke 250/350cc motorcycles built from January 1974 through December 1984. Only genuine race bikes are allowed; modified street bikes are not eligible. Among the eligible machines are any genuine 250/350cc Grand Prix two-stroke machine manufactured from 1974 through 1984. Examples are: • Yamaha TZ250/350 • Kawasaki KR250/350 • Bimota TZ250/350 • Harris TZ250/350 • Maxton TZ250/350 • Armstrong-Rotax 250/350 • Nicco Baker TZ250/350

Requirements and Modifications for Two-stroke Classic

a) GENERAL

1. Only genuine race bikes are allowed. Modified street bikes are not eligible. 2. Like design does not apply to this class for motorcycle eligibility. 3. No replica parts are allowed unless they are exact copies of the originals. 4. All motorcycles are to use three white number plates. See section 9.5 for additional requirements. 5. Competitors must comply with all applicable parts of Sections 1-9 of the AHRMA Handbook 6. All modifications must be performed to a high standard of fit, finish and workmanship.

b) ENGINE

1. All engines must be parallel or tandem twins. No v-twins allowed. 2. All engines must retain stock bore and stroke. 3. No flat slide carburetors allowed except period Lectron. Power Jet are allowed. 4. Engines must be naturally aspirated. 5. No reed valves