Old Bike Australasia – July 21, 2019

OLD BIKE AUSTRALASIA: 71

The RG250 ‘Gamma’ was produced by Suzuki from
March 1983 until 1987 and was highly successful in
the hyper-competitive Lightweight (250cc)
Production Racing category. The engine itself
followed established principles, being a water-
cooled parallel twin, with the mixture from the
28mm square slide Mikunis being fed through reed
valve blocks. The RG 250 Gamma also used Suzuki’s
version of the variable exhaust port timing, usually
referred to a power valve which markedly improved
low and mid-range power as well as fuel
consumption and exhaust emissions. The RG250 first
appeared in the Suzuki range in 1978, in air-cooled

WALTER WOLF

SUZUKI RG 250 GAMMA

Right side midriff exposed. The

tiny tool compartment sits in

the only available space.

RIGHT Mufflers were made by

Rob Dark. The full fairing has

a belly pan that shrouds the

bulbous expansion chambers.