Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles
Issue link: https://magazine.cyclenews.com/i/127203
technology for the manufacturers
th at have taken an active role in the
ser ies .
Most import ant ly, the Pro Twins
Series is good , competitive racing .
That mea ns f un for t he fans as well
as t he racers.
Circle Bell Enterprises prov ides
"quality items for the motorsport
fan. " The AMA Pro Twins Series
is a quality ser ies for the motorsport
fan . We are pleased and excited to
be a part of it.
-Bob Bellino. President.
Circle Bell Enterpri~es
AMA Circle Bell Pro Twins
Circle Bell is proud to sponsor t he
1989 Pro Twins Ser ies. The Pro
Twins Ser ies has grown a great
dea l since its incepti on in 198 2. It
has seen w in ning mach ines f rom
Harley-Davidson, Ducati, MotoGuzzi and most recently, Honda .
The Twins class is un ique to the
U.S. Its ties to the roots of motorcycle racing are as unm istakable as
the exhaust not e of the big, twin cyl inder motorcycles t hat provide
the basis for the ser ies. Yet, t he Pro
AMA Castrol250cc Grand Prix
Almost 90 years after Castrol began
formu lat ing oil for motorcycles, the
sport of motorcycle road rac ing has
literally exploded with movies,
television coverage, media interviews and mass magazines meant
for an aud ience of 10 million
enthusiasts. Operating w ith the
knowledge that it is "being up front
that counts ", Castrol is determ ined
to reta in its product's reputation as
t he number one oil for motorcycle
performance.
Castrol 's continued support of
motorcycle competition led to the
support and sponsorship of t he
250cc Grand Pr ix (for merl y known
as Formula Two) bikes in a full
series of races sanc tioned by the
American Motorcyclist As sociation
(AMA).
In a move to support a class of
competitors w ho are prima ri ly
" pr ivat eers" , Castro I is keeping
alive a Grand Prix category in
establ ishing an an nua l point fund
of $40,000, all of w hich is awarded
at the end of . the Castrol 250cc
Grand Prix Championship Ser ies .
Started in 1987, t he number of
250cc racers partic ipating have
increased, as has th e spectator
interest from coast to coast.
The Grand Pr ix racing class has
inherently been t he most competit ive of all the road rac ing events,
the diminutive competit ion bikes,
w ith only 250cc eng ine displacement, h ave regu lar ly ave raged
speeds on American circuits that
come to w it hin one or two miles
per hour of the average speeds of
the larger 750cc and 1OOOcc, multi-
Twins clas s has clearly helped point
the direction of future design and
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