Race Louvers has many options to meet most racing series class rules. Below are options we have in stock. We also offer custom sizes to fit your needs.
Nasa: American Iron, American Iron Extreme, German Touring Series, Honda Challenge 1-2, Super Touring 1-2 as well as 3 (non btm aero) and Autocross all permit hood venting without restriction. Super Touring 3 (btm aero) and 4-6 limits height to no greater than 3/8" with no sqin limit. Spec Z limits hood vent size to 400 sqin.
Note: All RS trim Race Louvers can be made to Nasa ST/TT3-6 spec. Simple order the RS trim product you prefer and list 'Nasa ST/TT3-6 Spec' in the order notes.
SCCA: Grand Touring 1 allows for 2 louvers max 10x20" ea, GT2 allows for 4 louvers max 600sqin, Touring 1 permit any hood venting. Touring 2 and 3 permit hood venting but restrict the size to a maximum of 1" tall and a maximum combined area of 200 sqin, while STU allows for a maximum of 200 sqin with no max height. SOLO Prepared allows for venting with a maximum of 500 sqin and a height no greater than 1".
Note: All RT trims meet the 1" height rule.
American Rally Association: Open classes, hood vents are permitted but have a maximum height of 15mm, all of our RS trims meet this rule. See ARA rulebook for other classes.
TransAm: TA permits two (2) hood louvers, maximum size of 20” x 10” with a minimum of five (5) slots. TA2 permits two hood louver panels maximum of x 16” long x 4” wide. SGT permits heat exhaust vents without size restriction.
Champcar Endurance Racing: No restrictions on hood extractors.
Time Attack (Global): Enthusiast, street, limited, unlimited and pro/comp all permit hood venting without restriction.
Time Attack (redline): Modified and unlimited classes permit hood venting without restriction
Time Attack (gridlife track battle): Street modified, track modified, unlimited and super unlimited all permit venting without restriction.
Time Attack (world time attack challenge): Club sprint, open, pro am, and pro classes all permit hood venting.
Gridlife Street, Street GT, Falken Club TR, Touring Cup - Hood vents are unrestricted.
Gridlife Touring Cup - One vent or louver above the tire per side with an area 45 square inches or less is allowed.
Lucky Dog Racing Series: No restrictions on hood extractors.
American Endurance Racing: No restrictions on hood extractors.
HPDE: High performance driving events. All HPDE cars, fun run and street cars are unrestricted.
Dont see your class listed? Class rules recently updated? Need a louver with specific requirements? Let us know and we can get you what you need.
* Please note class rules are subject to change and should be verified by the customer prior to purchase.