Board Editorial Feature
and AMA 2004 Superbike Rules
The Graves Formula
Extreame R1 Yamaha would be eligible for FIM and AMA Superbike, but
Yamaha wouldn't let them loose in AMA Superbike factory teams with a
front line rider. Take a good look, it might be the last you'll see
of a really modified 1000cc in-line four in a AMA roadracing for a while.
This is the type
of bike European distributor teams will be racing in World Superbike
starting with the 2004 season.
Oct 14th 2003 -
The American distributor teams may be unwilling to enter AMA Superbike
in 2004 with the new generation 1000cc fours without the availability
of trick factory parts like cams and pistons from Japan. They may choose,
instead, to race in the AMA's proposed new 1000cc Superstock class should
it actually happen. You can also see why we like twins.
Nov14th, 2003 - Just as we predicted, Kawasaki USA has
announced they will withdraw fromAMA Superbike in 2004as has released
their front line rider Eric Bostrom from his contract with them, The
AMA's creation of a 100cc Supersport class in 2004is adding to the demise
of tSuperbike class in America.
World Superbike, Supersport Championship
2004 Tech Rules for Superbike, Supersport
4, 2003: The main modifications to the Superbike & Supersport
Technical Regulations for the 2004 season have been released by FGSport.
These rules will be very similar to those adopted by the AMA and British
Superbike Championship, as well as many other counties.(Full text will
be available next week on the FIM Internet site):
Superbike Technical Specifications
2.4.1 Displacement capacities
2 cylinder Over 800cc up to 1000cc 4 stroke
3 cylinder Over 750cc up to 1000cc 4 stroke
4 cylinder Over 750cc up to 1000cc 4 stroke
The minimum weight will be 162 kg / 356.4lbs. A). 1% tolerance
will be allowed after the race. (The machine's weight after the race may
not be less than 160.38 kg)
184.108.40.206 Carburation Instruments for 1000cc
3 and 4 cylinders
* Carburation instruments refers to both throttle bodies
* The original homologated carburation instruments must be used un-modified.
* The uses of optional homologated carburation instruments are not allowed.
* The fuel injectors may be replaced, they must fit without modification
to the homologated throttle body.
* The carburation instruments intake insulators may be modified.
* Bell mouths may be altered or replaced.
* Variable length intake tract devices that function while the engine
is operating are not allowed, unless such a system is used on the homologated
* Modifications to the fuel pump and the pressure regulator are allowed.
* The fuel injection management computer may be changed.
* The use of flash memory (flash RAM ) is allowed.
* Vacuum slides may be fixed in the open position.
* Secondary throttle plates and shafts may be removed or fixed in the
open position and the electronics may be disconnected or removed.
Variable-length carburettor/fuel injection intake tract
devices that function while the engine is operating are prohibited, unless
such a system is use on the homologated machine.
220.127.116.11 Fuel Injection System
The fuel injectors may be replaced, however they must fit
without modification to the homologated throttle body. Vacuum slides may
be fixed in the open position. Secondary throttle plates and shaft may
be removed or fixed in the open position and the electronics may be disconnected
or removed. Variable-length carburettor/fuel injection intake tract devices
that function while the engine is operating are prohibited, unless such
a system is used on the homologated machine.
All engines in the Superbike class must be 4 stroke type.
The following engine components may not be altered from the homologated
machine except as noted. 4 cylinder engines with a bore / stroke ratio
of 1.5 to 1 or greater will be subject to an RPM limit of 14,000 RPMs.
This will be controlled by an electronic device issued by the FIM. Please
note rules specific for the 1000cc multi-cylinder machines (3 & 4)
will be found in the article concerning the component in question. Other
than noted, components may be modified or changed as allowed the following
*1000cc 3 and 4 cylinders: aftermarket or modified cam drive components
are allowed, however the cam drive must be in the homologated location.
18.104.22.168 Cylinder Head
1000cc 3 and 4 cylinders: Aftermarket or modified valves,
springs, retainers and other valve train components are permitted. The
original number of valves must be maintained.
A. Valve diameter, including stem, must remain as homologated.
B. Valves must be made of the same basic material as the homologated valves.
C. Valves must remain in the homologated location and at the same angle
as the homologated valves.
1000cc 3 and 4 cylinders: The homologated crankshaft is
allowed the following modifications:
A. Bearing surfaces may be polished or a surface treatment may be applied.
B. Balancing is allowed but only by the same method as the homologated
crankshaft. (for example heavy metal i.e. Mallory metal inserts are not
permitted unless they are originally specified in the homologated crankshaft.)
C. Attachment of aftermarket ignition components or sensors are permitted.
D. Balance shaft may be removed.
Primary gear ratios must remain as homologated for 1000cc
3 & 4 cylinder machines.
1000cc 3 and 4 cylinders: Aftermarket or modified clutches
(wet-type cannot be changed to
dry-type) with back torque limiting capabilities are permitted. (slipper
22.214.171.124 Exhaust System
The noise limit for Superbikes will be 107 dB/A, with a
+ 3dB/A tolerance after the race.
2.5 Technical Specifications for
2.5.2 Minimum Weights
600cc 4 cylinders: 162 kg / 356lbs • 750cc 2 cylinders:
170 kg / 374lbs
The original surfaces of the front fork tubes
(stanchions, fork pipes) may be changed. Additional surface treatment
126.96.36.199 Oil Pumps, Oil Lines and Water Pumps
The internal parts of the water pump may be changed or
modified. The drive ratio may be changed. The external appearance must
remain as homologated.
Aftermarket or modified, stock-type clutch with back-torque
limiting capabilities (slipper type) are allowed. The use of electro-mechanical
or electro-hydraulic actuating system are not allowed.
188.8.131.52 Exhaust system
The noise limit for Supersport will be 107 dB/A.
2.9.2 Minimum Production Quantities
1) Supersport Manufacturers producing more than 75,000
motorcycles per year must produce 1'000 units for homologation. Manufacturers
producing less than 75'000 motorcycles per year must produce 500 units
You Wanted to Know about running
World Superbike 2004 Spec Tires and More
Office, November 13, 2003:Superbike & Supersport World
Championships Changes to the Technical Regulations - Tyres. The following
amendments to the Superbike and Supersport Technical Regulations have
may be replaced from those fitted to the homologated motorcycle.
The use of tyre warmers is allowed.
At each event, during free practices, qualifying practices,
Superpole, warm up and races, a maximum of 15 rear and 11 front
tyres may be used. Front and rear wet tyres will be included
in the total quantity count. A Technical Steward must mark all
of these tyres. During free practices, qualifying practices,
Superpole, warm up and races, no motorcycle may enter the track
without the front and rear tyres being marked. If the riders
are given a red flag during a race (or during the Superpole
for reasons beyond rider's control) the FIM Technical Director
may allow an additional set of tyres to be used. For each race,
one extra set of tyres can be put on the second motorcycle to
have it ready for substitution on the grid in case of failure
of the first motorcycle.
The competitors must use only the tyres distributed during the
event by the Official Supplier.
All tyres to be used must be easily identifiable with a colour
marking or a numerical system to be applied by the Official
Supplier at the time of manufacturing. At the beginning of the
event, the Official Supplier must deliver to the FIM Technical
Director 4 samples of each type of tyre which will be used at
the event. When the Official Supplier delivers the samples of
the tyres to the FIM Technical Director, he must also give a
written explanation of the marking and the general characteristics
of the different types of tyres.
FIM Technical Director may, at his discretion, require the exchange
of one or more competitors' tyres for a tyre sample under his
control. The tyres exchanged remain under his control and he
can exchange them for the ones of another competitor.
1) Tyres must be
a fully moulded type carrying all size and sidewall marking of the
tyres for commercial sale to the public. Tyres of V and Z rating must
be used. The depth of the tyre treads must be at least 2.5 mm over
the entire tyre pattern width at a pre-race control. The tyres must
have a positive and negative tread of 96% positive and minimum 4%
negative (land and sea ratio). The maximum distance from the external
edge of the tyre to 50% of the tread elements is 35 mm. One size for
the front and two sizes for the rear are allowed. Each size, front
and rear, must be available with the same tread pattern as the commercial
tyres for the road use. The manufacturers may only submit one front
and rear pattern for approval. The previously approved tyre pattern
will remain valid until one year after the introduction of a new approved
The FIM/CCR will
grant the approval. The manufacturers must submit the tyre for approval
30 days prior to its first use. Templates proving the land and sea
ratio must be included. The tyres must have a DOT and/or E mark. The
DOT and/or E mark must appear on the tyre sidewall. Only when a race
or practice has been declared "wet", the use of a special
tyre commonly known as a full wet tyre is allowed. Wet tyres must
be a fully moulded tyre, no hand cutting is allowed on moulded tyres.
The use of hand cut tyres is not allowed. Wet tyres do not need to
carry DOT or E marks; however these tyres must be marked "Not
for Highway Use" or "NHS". At each event, during free
practices, qualifying practices, warm up and the race, a maximum of
11 rear and 9 front tyres may be used. A Technical Steward must mark
all of these tyres. During free practices, qualifying practices, warm
up and the race, no motorcycle may enter the track without the front
and rear tyres being marked. If the riders are given a red flag during
the race, the FIM Technical Director may allow an additional set of
tyres to be used. For the race, one extra set of tyres can be put
on the second motorcycle to have it ready for substitution on the
grid in case of failure of the first motorcycle.
2) The competitors
must use only the tyres distributed during the event from the Official
All tyres to be used must be easily identifiable with a colour marking
or a numerical system to be applied by the Official Supplier at the
time of manufacturing. At the beginning of the event, the Official
Supplier must deliver to the FIM Technical Director 4 samples of each
type of tyre which will be used at the event. When the Official Supplier
delivers the samples of the tyres to the FIM Technical Director, he
must also give a written explanation of the marking and the general
characteristics of the different types of tyres. The FIM Technical
Director may, at his discretion, require the exchange of one or more
competitors' tyres for a tyre sample under his control. The tyres
exchanged remain under his control and he can exchange them for the
ones of another competitor.
AMA SUPERBIKE RULES FINALIZED
PICKERINGTON, Ohio (Aug. 18, 2003) -- The AMA Pro Racing
Board of Directors has ratified technical rules for the 2004 AMA Superbike
Championship season and have approved, but not released a preliminary
set of rules for support classes including Supersport, Superstock and
the principal tecnnical regulations for AMA Superbike:
Multi-cylinders – Restricted to stock throttle
bodies and air intake boxes.
Twin-cylinders – In addition to the stock throttle bodies, one
alternate, AMA-approved throttle body type/set is permitted as well
as aftermarket air intake boxes.
Multi-cylinders – Limited modifications are permitted
but such items as stock camshaft lift, stock valve sizes and lightly-modified
stock crankshafts are required.
Twin-cylinders – The same limited modifications as multi-cylinders
are permitted except for the following items:
o Valve sizes and material are unrestricted.
o Camshafts are unrestricted.
Multi-cylinders – In addition to the stock set
of gear ratios, one alternate, AMA-approved set of ratios is permitted.
Primary drive ratios must remain stock.
Twin-cylinders – The same rules as multi cylinders apply.
Multi-cylinders – Limited modifications to the
stock frame are permitted such as gusseting for additional strength.
Twin-cylinders – The same rules as multi-cylinders apply.
Multi-cylinders – The minimum total motorcycle
weight (less fuel) is 370 lbs.
Twin-cylinders – The same 370 lbs. minimum weight applies.
AMA Pro Racing CEO is confident the new technical rules will help achieve
the objectives of continuing to deliver close competition and quality
entertainment, maintaining adequate control of costs, and encouraging
increased participation from major motorcycle manufacturers. “With
the input of all major stakeholders, we have created a set of rules
that will provide the ideal marketing platform for continued growth,”
said Hollingsworth. “The United States represents the world’s
most important motorcycle market and we’ve opened up the door
for more companies to use motorcycle racing as a means to promote their
the final AMA Superbike rules included measures taken to improve parity
among the two primary engine configurations. “Keeping the twins
competitive and opening the door for increased manufacturer participation
was a primary goal for 2004,” said Hollingsworth. “We expect
performance of the next generation multi-cylinder models to advance
even further and it’s imperative that we adjust the rules structure
to account for this ongoing development. We have created an environment
that provides opportunity for all manufacturers to showcase their products
and remain legitimately competitive.”
Pro Racing Changes Road Race Class Structure for 2004! Tries to eliminate
one class fiasco, creates 2 more in its place.
AMA Press Release - PICKERINGTON, Ohio, April 21, 2003:
Reflecting the changing motorcycle marketplace, needs of the manufacturers,
benefit to racers and the interests of fans, AMA Pro Racing has revised
its class structure for the AMA U.S. Superbike Championship. The new class
structure will be implemented beginning with the next racing season.
“The task of developing an all-new class structure is an extraordinarily
complex process and it is impossible to satisfy everyone,” said
Scott Hollingsworth, CEO of AMA Pro Racing. “Our primary objectives
are to deliver the best possible show to our fans while focusing on the
market development of professional motorcycle racing in the United States.”
The new classes include Superbike, Supersport, Formula Xtreme and Superstock
and are outlined as follows:
Superbike: 900cc-1000cc four-stroke, any number of cylinders.
Supersport: 600cc four-stroke, twin and four cylinders.
Formula Xtreme: 600cc four-stroke, four cylinders; 750cc
four-stroke, twin cylinders;
250cc-330cc two-stroke. All highly modified.
Superstock: 750cc-1000cc four-stroke, four cylinders;
up to 1350cc air-cooled twin cylinders
The Pit Board Page 1
SBK CHAMPIONSHIP TO RUN PIRELLI
The withdraw of many of the major motorcycle manufacturers from
the FIM World Superbike Championship in 2002 -2003 has required
the series owners, Flammini Group FG Sport, to develop rules to
start with the 2004 season that will put privateer and distributor
teams on more of an equal footing with any competing factories.
The new rule change requiring the use of one brand of spec tires
-Pirelli ,will help privateer teams compete against factory teams.
Not to mention, FG Sport needs the income provided by Pirelli
to be the Championships exclusive contract supplier to maintain
the profitability and exhistance of the World Championship.
August 4th: In its continuing
development efforts for the Superbike World Championship, the
FGSport Group, Organizer of the Championship, in collaboration
with Pirelli, has defined a program for supplying tyres for the
three categories in the Championship: Superbike, Supersport and
Starting with the forthcoming season, Pirelli will be the exclusive
supplier of tyres for all the teams that take part in the 45 races
in 10 countries for the title of World and European Champion.
The program will enable all the participants to compete under
the same conditions with respect to tyres, which makes the performance
of motorcycle manufacturers, team members and riders all the more
with Pirelli guarantees the supply of tyres for the Superbike
World Championship for at least the next two years, 2004 and 2005,
in addition to offering the teams additional advantages, such
• Guarantee of continuity and quality of the tyres supplied
and the relevant services to all the teams and riders, in all
the nations hosting the championship;
• Continuity of the technological development of the tyres;
• Tyres supplied will be of uniform high quality and available
at advantageous and identical prices for all teams;
• Availability, for the entire duration of the partnership,
of a Pirelli prize fund dedicated to riders, also to attract young
talented riders to participate in the Championship.
with the pledges of the Superbike, Supersport and Superstock Championship
and in compliance with requests submitted by the FIM - International
Motorcycle Federation to return the Superbike World Championship
to its original vocation, that is as near as possible to the characteristics
expressed by the production motorcycles, Pirelli has accepted
the supply proposal offered by the organizer of the Championship.
of the FGSport Group, Maurizio Flammini, commented: “The
agreement with Pirelli, a world leader in the manufacture of tyres,
guarantees the development and the continuity of the Superbike
World Championship, which has been the primary thought behind
our Group that has been committed to the organization of the Championship
since 1988. Moreover, the agreement strictly adheres to the philosophy
of the Championship that is to offer equal racing conditions to
all participants. In this respect, we would like to thank Pirelli
for the significant organizational and technological efforts that
it will undertake over the next few years which, we are certain,
will create the ideal conditions for new, important developments
for motorcycle manufacturers, teams and riders in the Championship
and in racing itself.”
General Manager of the Pirelli Motorcycle Business Unit, stated:
“For our Tyres Department the Superbike World Championship
represents a challenge from both a technical and technological
development point of view the maximum expression of live trials
that support and finalize advanced research and development carried
out in our laboratories all over the world. It is further confirmation
of the importance that Pirelli has always attributed to the competition
for two- and four-wheel production vehicles, in order to experiment
innovative solutions and accumulate know-how that can be implemented
in producing our high-performing tyres.”