Championship Classifications

Rules and Guidelines

Purpose and Philosophy: The AHA Championship Classes are intended to capture a wide range of SCCA Classes and vehicle preparation levels within a structure that awards an appropriate number of year end championships. The structure is designed to encourage creativity and prioritize HillClimb specific builds.

Classing Matrix: AHA Championship Classing is captured within a matrix. The matrix breaks vehicles into 3 categories: Sport for street legal and limited prep racing cars, Modified for production-based racing cars and Special for Formulas and Sports Racers. Each category is divided into classes based on displacement, which is the key differentiator within the category. Classes each have an allowance for tire and aero.

Prep Limits: Additionally, there is also a “prep limit” for most classes, meaning a car must be legal for one of the classes listed, OR one listed above on the Matrix- example: an STX car with 3.0l of displacement would be classified in Super Sport. Note- there is not a prep limit for Mod Unlimited or Specials. For classes with a prep limit, the vehicle must fit within at least one listed class holey- in other words, builders may not mix and match allowances.

Safety: Each category has a required safety level. For production-based vehicles, the minimum safety level is Level 2, requiring rollbars and driver safety gear, though Level 3 is highly recommended. Specials require level 3 safety. ALL vehicles competing on non-DOT approved tires MUST AT LEAST meet the requirements of level 3 safety. Safety levels can be found at https://timetrials.scca.com/pages/hillclimb-safety-rules.

Championship Class and Overall Points: Points will be awarded according to final class and overall finishing order with first taking 25 points, 20 for second, 18 for third and 15, 12, 10, 8, 6, 4, and 2 for places 4th-10th. Year end class and overall championships will be determined by totaling a driver’s best 3 finishes of the year.

Clarifications/Examples:

A Spec Miata can run as a legal SM car in Sport class - however it can also remove a restrictor, use different wheels and tires, and stay in SL within the CSP ruleset.
In Super Sport, M4, M5 and SMF cars are eligible provided they meet the displacement and aero limits for the class - essentially this means that a small displacement swapped or boosted car with limited aero would land in this class.
Because Modified lists TT Class U2 as a prep limit, any of the cars in this class could declare themselves as U2 and run a more open ruleset. Same is true for Super Modified and Mod Unlimited with the U1 option- This essentially creates three levels of the previous Super Production Ruleset.
In general, ESP cars all have the same HillClimb potential and thus ESP legal cars are exempt from the displacement limit for Super Sport.
Likewise, all CP and all AS cars have the same HillClimb potential and thus all CP and AS legal cars are exempt from the displacement limit for Super Modified.
The Street Unlimited ruleset, traditionally used for SEDIV HillClimbs is allowed for Sport Unlimited.

Classification Matrix

HillClimb Class		Displacement limit	Safety Level	Tire Allowances	Aero Allowance	Prep Limit	Examples of Classes
							TT	SOLO	Race
Sport (S)	Small displacement, lightly modified street legal and limited prep race	Internal combustion engines (ICEs) up to 2.5 NA, No FI	Level 2	Any D.O.T. Approved Tire	Splitters and Spoilers per Solo SP rules	Must otherwise be legal for one of these or the above listed classes:	S4 S5 S6 T4 T5	CS STR ES SSC GS CSP HS DSP STS ESP STX FSP	ITA ITB ITC T4 SM B-Spec
Super Sport (SS)	High perfromance, lightly modified street legal and limited prep race	Internal Combustion Engines up to 5.0 NA / 2.5 FI (2WD) / 1.9 FI (AWD)	Level 2	Any D.O.T. Approved Tire	Splitters and Spoilers per Solo SP rules	Must otherwise be legal for one of these or the above listed classes:	S2 S3 T2 T3 M4 M5	SS ESP * AS SMF BS STH DS FS STU	T2 T3 ITS ITR
Sport Unlimited (SU)	Highly modified street legal and limited prep race	Unlimited	Level 2	Any D.O.T. Approved Tire	Open	Must otherwise be legal for one of these or the above listed classes:	S1 T1 M1 M2 M3	SSP SM SSM CAM	T1 SU ~
Modified (M)	Small displacement, highly modified production based	Internal combustion engines up to 2.5 NA, No FI	Level 2	Open	Open	Must otherwise be legal for one of these classes:	U2	XP DP EP FP	GTL STL EP FP HP
Super Mod (SM)	High performance, highly modified production based	ICEs up to 5.0 NA / 2.5 FI (2WD) / 1.9 FI (AWD)	Level 2	Open	Open	Must otherwise be legal for one of these or the above listed classes:		CP **	STU GT2 GT3 AS **
Mod Unlimited (MU)	Ultra high performance, production based	Unlimited	Level 2	Open	Open	Must be legal for one of these or above listed classes:	U1	DM EM	GT1
Special Limited (SL)	Small displacement formula and Sports Racers	Internal combustion engines up to 2.0 NA, No FI	Level 3	Open	No Wings	Must be legal for one of these classes:		CM FM	FF F5 FV SRF
Special Open (SO)	Unlimited Formulas and Sports Raceers	Unlimited	Level 3	Open	Open	Must be legal for one of these or above listed classes:		AM BM	FA FX P1/P2 PX

Any vehicle competing on non-DOT approved tires MUST meet the requirments of Safety Level 3

IT IS HIGHLY RECOMMENDED THAT ALL VEHICLES MEET OR EXCEED LEVEL 3 SAFETY

* All ESP cars may run within Super Sport, regardless of displacement

** All CP and AS cars may run within Super Modified, regardless of displacement

~ The SEDIV HillClimb Class "Street Unlimited" is included as an approved ruleset for Sport Unlimited