Original front forks must be retained:
inner and outer tubes, fork cap (intact and in working order, wing nut adjuster mods. allowed), fork bottoms, inner cartridge and damping rods (damping rods and cartridge cannot be increased in diameter or length, aftermarket coatings are allowed to maximum thickness of 0.1mm), caliper mounts, axles and spacers.

Modifications are limited to:

A. Internal parts may be modified within the restrictions placed above, including substitution of springs, change     of shims and/or spacers, and addition of “Race Tech” kit/aftermarket type valving.
B. External Compression Adjusters may be modified/changed.
C. A steering damper may be installed.
D. Aftermarket coatings may be applied.
E. Triple Clamps may be substituted for Superbike only.
F. Steering Head inserts to adjust rake may be used in Superbike only as long as no part of the frame is     modified.

Engine Modifications are unlimited, except for the following:

A. Bore and Stroke must remain as stock.
B. Valve sizes must remain as stock.
C. Stock cases, barrels, and cylinder heads must be used, but may be altered.
D. Stock carb bodies or fuel injection systems must be used, but carb internals, velocity stacks and injection     management systems may be altered or replaced. Injectors must be stock and unaltered from OE.
E. Aftermarket exhaust systems may be used, but must be baffled and meet noise restrictions as specified by     host circuits.
F. Dynojet or kit-type Electronic “quick shifters” are allowed.  Manual “secondary” hand operated kill     switch/quick shift are not allowed.
G. Clutch actuation may be modified to a racing “kit” type.
H. “Dry Clutches” are only permitted when used on the OE model.
     Aftermarket “Slipper” clutches are permitted.
I. The. “stock” battery, starter and charging system must be retained. 600 Sport Bike class machinery Ignition     and E.C.U. must also be stock, or made by the O.E.M. as a kit, or produced for consumer use by Dynojet     Research.

Immediately following each qualifying session or race, the top finishers plus other motorcycles chosen at random may be tested on the Official Series Dynojet Dyno to verify power.

A. For the WCC, each machine may develop no more than 118hp at the conclusion of the event. This     includes all displacement sizes.

B. Switches or any other device designed to affect the horsepower readings during dyno testing are strictly      prohibited. Competitors who stop on course during or after an event (cool off lap) and attempt to alter, or      alter, the performance of their machine will be disqualified.

NOTE: Free Dyno testing will be available for all National racers from the National Dyno sponsor, Dynojet            Research. All competitors must carry a provided Dynojet sticker on each side of their machine, clearly            visible when the rider is in position.

Machines unable to make post qualifying or post race tech and complete their dyno runs for any reasons, including running out of fuel, major crashes or major mechanical failures will be disqualified. Allowances will be made for minor mechanical failures that can be repaired, under strict supervision, in a reasonable amount of time and that do not have any bearing on performance or weight. Determination of ‘minor’ will be at the discretion of the Tech Inspector.
Allowances will also be made for minor crashes on machines that can be ridden back to pit lane. Determination of ‘minor’ will be at the discretion of the Tech Inspector.
In the instance where a motorcycle on the dyno produces one run where that motorcycle registered within one horsepower of the horsepower limit, that motorcycle will be re-tested at the end of that class/group;
If that motorcycle again reads beyond the standard, that machine will be penalized as per the Rulebook.
If that machine reads within the guidelines in the dyno re-do, no penalty will be assessed.

DOUBLEHEADERS:  In the case where a single qualifying session determines the starting grid for two separate Feature National events, half of the specified penalty will be applied to each of the two events.

A. POWER

    Qualifying

    Competitors who have machines that produce up to and including 2.99 horsepower more than the class     standard/limit post qualifying on the official series Dynojet Dyno will be penalized five positions in the final     qualifying results;
    Competitors who have machines that produce 3.00 or more horsepower, greater than the class standard/limit     post qualifying on the official series Dynojet Dyno will be penalized 14 positions on the final grid;

    Race

    Competitors who have machines that produce up to and including 2.99 horsepower more than the class     standard/limit post race on the official series Dynojet Dyno will be penalized five positions in the final race     results;
    Competitors with machines measuring three or more horsepower above the limit post race will be disqualified.
    These test numbers will be generated on the Dyno using only numeric readings, with the “smoothing” set on     five, using an “SAE” horsepower calculation.