Moto West Grand Prix – (424) 261-WEST 

 

SECTION 8 – Competition Categories

Competition machines will be classified according to actual displacement, degree of modification and performance index. For the purpose of better interpreting the rules, the following definitions are listed:

“Category” refers to the general type of motorcycle. There are three major categories; superstock, superbike and formula (grand prix).

“Class” generally refers to a grouping based on engine size within a category.

“Change” means the addition of aftermarket or “optional” parts or accessories designed to increase safety, performance, and reliability or reduce costs.

“Altered” or “Modified” means cutting, grinding, milling, porting, boring, drilling, bending, welding, brazing or soldering other than normally accepted maintenance and repair procedures.

“OEM” is defined as Original Equipment from the Manufacturer.

“OEM Type” is defined as aftermarket equipment manufactured to all original specifications in dimension and design.

“Removed” is defined as unbolted – not cut off.

“Performance Index” occurs when a motorcycle is demonstrably faster or slower than others in its displacement group, and may, at the discretion of MWGP, be assigned to another class.

Canadian models, unless exactly the same as U.S. year/models, must run their superbike class.

All machines must conform to the tech inspection requirements of section 7.

1.  Superstock: There must be at least 1000 motorcycles available to riders, worldwide, per year and the machine must be generally available on the U.S. market with full EPA and DOT approval to qualify a machine for the superstock categories. The rider must provide proof of eligibility. Superstock machines are defined original motorcycle manufacturers’ equipment intended for use on public roads which are allowed to use an aftermarket or racing exhaust system instead of the stock exhaust system and other modifications as listed below. The decision regarding the legality of any machine entered in a superstock class is the responsibility of the tech inspector for the event in progress. The rider or crew of any machine is responsible for producing a service or owner’s manual with all part numbers, specifications and other material required to prove its legality. Legality will be determined based upon manufacturers’ specifications (or comparison of similar OEM parts) for the year, model and make of the machine entered.

Following is a list of the only items that should or may be done to a superstock machine:

a) Grab rails, horns, reflectors and outer rear fender, and helmet locks may be removed.

b) Turn signals, cruiser pegs, and luggage racks must be removed.

c) Passenger foot pegs and brackets must be removed.

d) Rider foot pegs and brackets may be changed or modified.

e) Handlebars may be changed or altered.

f) Instruments, instrument brackets, switches, and associated cables may be removed and/or replaced by aftermarket parts. Original combination instrument/fairing brackets may be replaced with aftermarket parts. This applies and is limited to the upper front fairing area.

g) Headlight and tail/brake light housings may be removed. Disconnection must be made at stock connectors. If requested the stock fixture/bulb must be operable, with no modifications, by simply plugging the fixture/bulb into the wiring harness or socket.

h) Exact replica replacement bodywork (this includes the tail section) may be used on machines equipped with bodywork from the factory. If the stock bodywork includes air-ducting tubes they may be removed. If they are utilized they must be stock or exact replica parts. Solo seat cowlings may be added when not supplied by OEM. If an aftermarket tail section is used that incorporates a solo seat cowling when one is not offered by the manufacturer, the tail section must conform to the shape and size of the stock bodywork that is provided by the manufacturer. The solo seat cowling portion of said bodywork must start at the position of the stock bodywork on the rear and rise to no more than 1.5 inches above the seat when measured from the top of the bodywork to the top of the seat on a stock motorcycle. The shape of the bodywork must conform to the shape of the seat (no huge rises in the middle etc.). A “superbike seat” is allowed (i.e. the seat is molded into the tail section). Tinted windscreens are allowed. Double bubble type windscreens are allowed.

i) Suspension: Rear shocks may be changed or modified but must remain the same type as original. Fork springs may be replaced with aftermarket springs, and fork oil may be changed. Stock internal parts of forks may be changed to alter damping characteristics. To allow external adjustment of fork springs, fork caps may be changed. Suzuki TL models are allowed to use aftermarket linkages that allow for mounting of standard style shock’s replacing the stock rotary valve setup.

j) DOT approved tires with an “S” or higher speed rating must be used and the original tread pattern cannot be grooved or modified. Non-DOT approved rain tires may be used with no modification of their original molded tread pattern. Slicks are allowed in all other classes.

k) Chain and/or sprockets may be changed. Chain size may be changed. Shaft drive machines may change gear ratios. The chain guard may be removed. Machines originally equipped with a drive belt may change to a chain drive system. A “shark guard” must be fitted to the swing arm in a manner that inhibits the rider’s extremities from being caught between the rear sprocket and chain.

l) Steel braided or Kevlar brake lines may be used. Brake pads may be changed. Rear rotors may be modified however must still remain functional.

m) Carburetor jets and needles may be changed. Aftermarket jet kits may be used. Resizing of air metering holes in CV carburetor slides is allowed. Aftermarket carburetor heat shields are not allowed.

n) The OEM air box must be used and an OEM type filter must be properly installed (a K&N style direct replacement filter is an acceptable OEM type). The only modification allowed is the sealing of air box drains.

o) If the crankcase ventilation hose is relocated from the air box it must be routed to a catch can and the stock air box hole must be plugged.

p) Spark plugs, clutch plates and clutch springs may be changed to aftermarket parts.

q) Filters may be changed. OEM type must be used. If the filter acts as part of the air box housing the replacement filter must not have a larger opening than stock.

r) Cam timing is allowed via the slotting of cam sprockets. Press on cam sprockets may be changed to OEM spec bolt style. Ignition timing may be altered by slotting the ignition trigger mounting plate or by replacing the stock ignition rotor with an aftermarket rotor.

s) 1mm over-bores are not allowed on any machine manufactured after 1995 (model year 1996 and up) unless offered by the manufacturer as a maintenance item. Aftermarket non-OEM valve seats are not allowed. Head and base gaskets may be replaced with aftermarket parts and need not be to stock spec. Aftermarket gaskets may be utilized on engine parts. Multi-angle or radius valve jobs are allowed as normal maintenance as long as machining is confined to the actual valve seat insert and does not extend into the port or combustion chamber. Valve seat to port blending is not allowed. Valves must meet OEM specifications.

t) No bead blasting (or blasting using any other medium) is allowed on any internal engine part except gasket surfaces.

u) Machining of gasket surfaces of cylinder heads, cylinders, and engine cases is allowed. All internal and external engine parts must remain stock without modifications, no addition or removal of metal is allowed, except as mentioned in this section. No surface treatments are allowed. Engine must remain at stock displacement except as outlined in above.

v) The transmission must use the stock OEM parts for that model. Shifter return or detent springs may be replaced with aftermarket springs.

w) 49-state model engine and ignition components may replace those same components on California-only model machines of same brand, year, and model.

x) Cooling fan assemblies may be disconnected and/or removed on water-cooled machines. Disconnection must be made at stock connectors.

y) You may use captive wheel spacers and replace the speedometer drive with a spacer.

z) Aftermarket screw off type gas caps are allowed so long as they do not increase the orifice size compared to the stock cap.

aa) Stand spools or hooks may be added to the swing arm, stand spools that do not require welding (or gluing etc.) or cutting may be added to the front forks.

bb) You may use alternative bodywork fasteners (i.e. DZUS fasteners).

cc) You may replace the ECU with any aftermarket unit or modify to any extent the stock unit.

dd) You may remove or cut helmet and bungee hooks from the sub-frame – however not the portions of the sub-frame they are attached to. You may drill holes in the sub-frame to act as a weak point in the event of a crash but the relief holes must be drilled behind where the rider sits and the metal removed must be replaced by a bolt. You may polish or paint the frame and/or swing arm.

ee) You may replace the exhaust system with an aftermarket system. Pipe wrap is allowed.

ff) Manual cam chain tensioners are allowed.

gg) Electric ignition cutout shift devices are allowed, however they may not physically move any portion of the shift mechanism.

hh) Machines running wire-spoke wheels stock may change to a non wire-spoke wheels so long as the replacement weighs as much or more than the stock wheel and is the exact same diameter and width.

ii) Kit wiring harnesses from the OEM for the machine may be used in place of the stock wiring harness.  Aftermarket harnesses or home-made harnesses are not allowed.  Stock harnesses may not be modified in any way other than as listed above.

The items above constitute the entire realm of deviation from showroom stock for superstock classes. Anything not covered in these rules is not allowed and deemed illegal for competition in the superstock class.

2.  Superbike: Machines intended for use on public roads in their origins with more than 1000 units available worldwide may be changed or modified, to any degree, with the following restrictions:

a) In superbike the original combination of frame and motor must be maintained except in the case of similar models with directly interchangeable engines. Single cylinder machines may use any engine, frame, and fairing combination. Non-OEM swingarms are permitted.

b) 2 stroke GP machines will not be allowed to participate in superbike (based) classes.

3.  Formula & GP: No restrictions other than displacement & fuel limits as outlined in section 8, and configuration as outlined below.

4.  Track day:

• Track day rules
• Unlimited displacement
• Participants are limited to those who have never held a competition license

 

 

 

5.  Advanced MWGP status competition classes are as follows:

a) Formula 1

• Formula rules
• 850cc to unlimited displacement

b) Formula 2

• Formula rules
• Up to 850cc

6. Expert MWGP status competition classes are as follows:

a) Open superstock & open superbike

• Unlimited OEM displacement

b) 750 superstock & 750 superbike

• Up to 750cc multis (Superbike up to 770cc)
• Up to 1050cc 4 stroke triples (Superbike up to 1080cc)
• Up to 1000cc 4-stroke twins

c) 600 superstock & 600 superbike

• Up to 650cc 4-stroke multis
• Up to 675cc 4-stroke triples
• Up to 1200cc 4-stroke air-cooled twins
• Up to 850cc 4-stroke water-cooled twins
• Up to 550cc 2-stroke multis

d) Ducati cup heavyweight

• Formula rules
• Manufacturer must be Ducati
• 850cc to unlimited displacement

e) Ducati cup middleweight

• Formula rules
• Manufacturer must be Ducati
• Up to 850cc

 

f) Formula twins heavyweight

• Formula rules
• Unlimited displacement twins

g) Formula twins lightweight

• Formula rules
• Up to 750cc twins

h) Battle of the twins middleweight (BOTT-MW)

• Superbike rules
• Up to 750cc water cooled twins
• Up to 1000cc 2-valve air cooled twins
• Up to 1200cc pushrod air cooled twins

i) Battle of the twins lightweight (BOTT-LW)

• Superbike rules
• Up to 700cc water cooled twins
• Up to 750cc air cooled twins
• Up to 750cc 3-valve water cooled twins
• Unlimited displacement singles

j) Formula singles

• Formula rules
• Unlimited displacement singles

k) Formula 500 GP

• Formula rules
• Up to 500cc water cooled
• Up to 750cc air cooled

l) 250 cup

• Superstock rules
• Up to 250cc 4-stroke twins
• Up to 250cc 4-stroke singles
  • Singles are allowed stock air-box modification

 

m) 125/250 GP

• Formula rules
• Up to 250cc 2-stroke grand prix machines

n) Formula 40 heavyweight

• Formula rules
• Unlimited displacement
• All riders must be 40 years of age or more at the time of registration

n) Formula 40 middleweight

• Formula rules
• Up to 850cc
• All riders must be 40 years of age or more at the time of registration

o) Formula 50 heavyweight

• Formula rules
• Unlimited displacement
• All riders must be 50 years of age or more at the time of registration

o) Formula 50 middleweight

• Formula rules
• Up to 850cc
• All riders must be 50 years of age or more at the time of registration

p) Ladies class

• Formula rules
• All riders must be female
• Novices are permitted into Ladies Class
  • Novices do not receive points
  • Novices do displace finishing order and expert points

q) Dinosaur heavyweight

• Formula rules
• Unlimited displacement
• Race bike frame and motor must be verified of an original manufacture date of 20+ years prior to the start of the season.

 

r) Dinosaur lightweight

• Formula rules
• Up to 750cc
• Race bike frame and motor must be verified of an original manufacture date of 20+ years prior to the start of the season.

7. Novice MWGP status competition classes are as follows:

a) Novice heavyweight

• Formula rules
• Displacement limited to 651cc or more

b) Novice middleweight

• Formula rules
• Displacement limited to 501cc – 650cc

c) Novice lightweight

• Formula rules
• Up to 500cc

8. Bracket racing MWGP classes are as follows:

a) Bracket A (1:26.999 @ Big Track / 1:17.999 @ Streets <both directions>)

• Formula rules
• Expert status
• Any race laps posted below bracket time will result in DQ.

b) Bracket B (1:28.999 @ Big Track / 1:19.999 @ Streets <both directions>)

• Formula rules
• Expert status
• Any race laps posted below bracket time will result in DQ.

c) Bracket C (1:30.999 @ Big Track / 1:21.999 @ Streets <both directions>)

• Formula rules
• Expert status
• Any race laps posted below bracket time will result in DQ.

 

d) Bracket D (1:32.999 @ Big Track / 1:23.999 @ Streets <both directions>)

• Formula rules
• Expert status
• Any race laps posted below bracket time will result in DQ.

9. Track day MWGP classes are as follows:

a) Run What Ya Brung (RWYB)

• Track day rules
• Unlimited displacement
• Participants are limited to those who have never held a competition license

10.  An expert/advanced racer may ride up classes, but this will be on a space-available basis. If the race grid is too large the last riders registered will be refunded their entry fee.  Riders may not race in a class if their bike does not fit the rules.  Novice racers may not race up a class.

11.  Turbocharged machines must ride up one displacement class.