Posted on Sunday, January 29, 2006 - 09:26 pm:

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What is the difference between supersport and FX bike? I though the Superpsort was pretty close to stock while the FX had lots of mods?

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4. Multi-cylinder and liquid-cooled twin-cylinder motorcycles:
The following engine components may not be altered from the
originally approved model except as noted:

a. Engine type, configuration, stroke and any modifications of engine components to alter the stock OEM firing order of the cylinders are not permitted.

b. Stock crankshaft

1. Bearing surfaces may be polished or surface treated.

2. Balancing is permitted only by the same method used by the OEM. For example, heavy metal (i.e. Mallory metal) inserts are not permitted unless they were originally specified by the OEM.

3. Attachment of aftermarket ignition components or sensors is permitted.

4. Primary gears cannot be changed or modified.

c. Stock cylinders, cylinder heads and crankcases.

1. Machining, welding and the addition of material are permitted

2. Cylinder liners or coatings may be replaced or added.

d. Aftermarket or modified valves, springs, retainers and other valve-train components are permitted. The original number of valves must be maintained.

1. Valve diameter, including stem, must remain stock.

2. Valves must be made of the same basic material as the OEM valves. This restriction does not apply to twin cylinder engines.

3. Valves must remain in the same location and at the same
angle as originally installed by the OEM.

e. Aftermarket camshafts are permitted.

1. Cam lift and the resulting valve lift must be no greater than stock. This restriction does not apply to twin cylinder engines.

2. Aftermarket cam drive components are permitted, but must be in the same engine location as the OEM drive.

g. Transmission shafts and gear sets
Two options are available for these components:

1. Stock transmission shafts and gear sets
Undercutting and surface treatments are the only modifications allowed.

2. Approved transmission shafts and gear sets
Each manufacturer will be permitted one alternative set of gear ratios per approved model. Approved shafts and gears may be interchanged with stock components.

Undercutting and surface treatments are the only modifications allowed. Only shafts and gears sold through the OEM distributor or its dealers are permitted.

a. Approved transmission component must be available individually or as a set to AMA Superbike-licensed riders for the entire current season (or the remaining part of the season). Orders determined to be legitimate by
AMA Pro Racing and accompanied by a 50% deposit
must be filled within 15 business days of receipt by the OEM distributor or dealer.

b. Retail price of individual approved transmission components may not exceed twice the manufacturer's suggested retail price of the components they replace. If a manufacturer does not offer optional AMA-approved transmission components, then the stock components must be retained.

h. Fuel injection throttle-body assemblies

1. Assemblies include all attached parts with the exception of fasteners, cables, cable actuating pulleys, flexible fuel lines, vacuum lines, air box connection tubes and velocity stacks.

2. Variable-length fuel injection intake tract devices that function while the engine is operating are prohibited.

3. The stock OEM throttle body sub-assemblies must be utilized.

a. Modifications are not permitted to the following controlled
components:

1. Intake bore castings and associated housings

2. Butterfly valves and shafts

3. Non-flexible fuel rail

b. Fuel injectors may be replaced with aftermarket units provided the original mounting locations are maintained and no modifications are made to the throttle body assembles for injector fitment. The total number of installed injectors must be the same as originally produced.

c. Secondary butterfly valves may be fixed in the open position.

d. All other fuel injection system components may be modified or replaced with aftermarket items.

i. Intake air boxes

Stock air boxes are required with only the following modifications permitted:

1. Air filters, internal flap type valve, sensors and vacuum fittings may be modified, replaced with aftermarket parts or removed. Any holes in the air box to the outside atmosphere resulting from the removal of components must be completely sealed from incoming air. All incoming air must
pass through the original, unmodified air box inlets.

2. Ram air tubes or ducts may be modified, replaced with aftermarket parts or removed. If tubes/ducts are utilized, they must be attached to the original, unmodified air box inlets.

3. Velocity stacks may be modified, replaced with aftermarket parts or removed. The only modification permitted to the air box to allow use of alternate velocity stacks is the removal
of internal debris deflectors/plates. Variable-length fuel injection intake tract devices that function while the engine
is operating are prohibited.

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Posted on Monday, January 30, 2006 - 08:01 am:

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6.5 THUNDERBIKE - Thunderbike machines, except single cylinder machines, are based
upon production models, sold by manufacturers and their dealers in North America for
street use. Proof of compliance rests with the competitor entering the motorcycle. Single
cylinder machines are exempt from production and street use requirements. Single cylinder
2 stroke GP road race machines are not allowed in this class. All machines must have
unaltered VIN numbers.

NOTE: Ducati 749 Series machines are excluded from this class.

6.5.1 Production machines not sold by manufacturers and their dealers for street use in
North America via normal commercial channels may be approved on an individual
basis. CCS will maintain a list of non-standard approved models and that
list will be available at each event from the Race Director/Referee.

A. CCS reserves the right to re-factor machines at any time. CCS will notify
current licensees 30 days prior to any change. Changes will take effect 30 days
from the original date of notification.

6.5.2. All machines must meet the equipment standards of Section 5, as well as the
following:

A. Frame, cylinder head(s) and engine cases must be from the same production model
motorcycle. Single cylinder motorcycles may use any frame and engine.

B. The frame must be as originally supplied by the manufacturer on the approved
model. Strengthening gussets or tubes may be added. Only brackets or tubes not
supporting suspension, engine, or drive line components may be removed. Swing
arms may be modified or replaced and rear shocks may be replaced or relocated.
Single cylinder motorcycles are excluded from this restriction.

C. Reducing engine size of machines from stock displacement to meet Thunder class
displacement limits is not allowed.

D. Fairings that meet the requirements of Section 5 may be used.

E. Liquid cooling is not allowed unless original equipment on the model being used.

F. Original type of induction system must be retained. If a machine originally was sold
with fuel injection, then it must remain fuel injected. If the machine originally
came with carburetors, then it must use carburetors, however they need not be the
original type or size.

6.5.3- CCS Thunderbike Class displacement limits are absolute and are set as follows:
THUNDERBIKE (Amateur and Expert)
Single cylinder, Unlimited displacement
Two stroke, Unlimited displacement
Twin cylinder, air cooled, Unlimited displacement
Twin cylinder, liquid cooled, 3 or less valves per cylinder, Unlimited displacement
Twin cylinder, liquid cooled, 4 valve per cylinder, up to 750cc
Three cylinder, air cooled, non-fuel injected, up to 1200cc
Four cylinder, air-cooled, up to 1200cc
Four cylinder, liquid cooled, 1990 to 1992 model year, up to 650cc
Four cylinder, liquid cooled (oil or water), pre-1990 model year, up to 860cc
All air-cooled, 2-valve, unlimited displacement

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