S2000 Challenge Series Classification - Revised 2003 Classing

No changes are allowed to a car unless they are listed below. If a component or other modification is listed below, any type (or size) of that component is allowed, unless otherwise noted (ie. "sway bar" means adjustable or non-adjustable allowed).

If you have a question about any modification, please contact Aaron (mailto:[email protected]).

This classification system is subject to change because people always find sneaky little loop holes.


STOCK
Tires: up to 275 width rear tire, 120+ treadwear
Stock wheels only
Alignment – any setting
Any brake pad
Any modification to stock rotors (cross-drilling, cryotreating, etc.)
Any brake fluid
Brake ducting allowed
Brakelines
Any air filter
Any cat-back exhaust
Any clutch
X-brace
Modified stock throttle body
Strut-tower brace
Rear brace
Thermostat
Radiator cap
Heat Shield
Rollbars, seats, or any other safety equipment allowed
Weight savings: seats can be removed or replaced, plastic necessary to install rollbar or other safety equipment can be removed, spare tire, jack/tools can be removed. Nothing else can be removed.

MODIFIED
All STOCK mods allowed.
Hoosier/coilover combination bumps car up to UNLIMITED.
Up to 200 pts allowed from below (note, I changed some points around):

Turbocharger 100
Supercharger 100
Internal Mods to stock motor 100
Hoosiers 100
Transmission Mods/replacement 75
Coilovers (shocks & springs) 75
Spec Competition Tires 50
Active Rear Wing 40
Rear Wing/Spoiler (other than OEM) 25
Shocks (w/stock springs) 25
ECU/Ignition Control 25
Remove Catalytic Converter 25
Final Drive gear change 25
Differential 25
Hardtop 25
Any wheels 20
Springs (w/stock shocks only) 20
Any Changes to Stock Brakes 20
Front end/aerodynamics (non-OEM) 20
Non-wing rear end aero (diffuser) 15
Any Intake 15
V-TEC/Air Fuel Control (piggybacking) 15
Front swaybar 15
Rear swaybar 10
Flywheel 10
Header 10
Any removal of interior panels, carpeting, windows etc. not necessary for some valid reason (decreasing weight does not count as "a valid reason", a fancy stereo system does) 10
Removal of Air Conditioning Unit 5
Any Hood 5
Any front bumper (non-aero) 5
Any rear bumper (non-aero) 5
ANY ROLLBAR PROVIDING INCREASE IN SAFETY OVER STOCK -10 pts

* Spec Competition tires are: Kumho Victoracer/Ecsta V700; Toyo RA-1; Yokohama A032r, Michelin Pilot Sport Cup. Max width rear for all tires = 275.


UNLIMITED
(Anything goes) Car must be based on production S2000 Chassis and have production-based S2000 engine block (up to 2.2 liters).

No changes are allowed to a car unless they are listed above. If a component or other modification is listed, any type (or size) of that component is allowed, unless otherwise noted (ie. "sway bar" means adjustable or non-adjustable allowed).

If you have a question about any modification, please contact Aaron (mailto:[email protected]).

This classification system is subject to change because people always find sneaky little loop holes.

ANY MODIFICATION NOT LISTED ABOVE MUST BE REPORTED BEFORE AN EVENT OR YOU MAY BE DISQUALIFIED. THOSE MODIFICATIONS BELIEVED TO PROVIDE PERFORMANCE ADVANTAGES WILL BE ASCRIBED POINTS BEFORE CARS GO ON TRACK. * Spec Competition tires are any of the four make/models listed here, no others. Allowed make/models are: Kumho Victoracer/V700; Toyo RA-1; Yokohama A032r, Michelin Pilot Sport Cup. Max width rear for all tires = 275.

ANY MODIFICATION NOT LISTED ABOVE MUST BE REPORTED BEFORE AN EVENT OR YOU MAY BE DISQUALIFIED. THOSE MODIFICATIONS BELIEVED TO PROVIDE PERFORMANCE ADVANTAGES WILL BE ASCRIBED POINTS BEFORE CARS GO ON TRACK.