New Drivers Start Here
- Once logged in, select the race from the schedule
- Select "racer" tab
- Select your class
- Select the "season commitment" button if you wish to receive a discounted entry fee at KOH for committing to race at least 3 regional races next season.
The process is straight forward. If you have any questions registering, please email Shannon Welch at [email protected]
Building your own ULTRA4, Stock Modified, Stock, Legends, or UTV? Find out all the rules before you start your build. All safety rules must be followed by all classes.
Download the ULTRA4 Rule Book. – Updated 12/29/2015 – updates are highlighted in RED.
Pro Comp Stock – 4600 - 8.3
Rubicon Expess Modified – 4500 - 8.4
G2 Wheels Legends – 4800 - 8.5
UTV Drivers - 4900 - 8.6: Classes have been simplified to one class. Please consult the ULTRA4 Rulebook section 8.6 for KOH UTV rules for KOH UTV Race.
Download the document “How to pass Ultra4 Chassis and Tech Inspection”
Ultra4 Chassis & Tech Sheet can be viewed here.
Should you have specific technical questions, please email our tech inspector at [email protected]
ULTRA4 is requiring SFI Rated Head and Neck Restraints for all Classes in 2017. Please click here for a list of SFI approved devices. Drivers with any questions regarding this requirement can email [email protected]
USAC Insurance is required for ALL classes. Please visit www.ultra4license.com to pay for your insurance. An annual license covers all races in a calendar year plus your tech fee. If you sign up for a single use license, you will owe a tech fee at your first race.
First time Registering for KOH Week?
If you're new to ULTRA4 Racing and KOH Week, a good first place to start are these helpful links for each race.
Click here to learn about registering for Smittybilt Every Man Challenge
Click here to learn about registering for KOH UTV Race
One UTV Class
This class will race for a purse at all races throughout the season. Entry fees for KOH have been kept the same as last year’s Pro price and entry fees throughout the season will be lower.
Guaranteed Purse for 4500, 4600 and UTV Classes at EVERY Regional Race
The 4500, 4600 and UTV Classes will have a $1000 purse payable to 3rd at all regional races in 2016. The 4800 legends class will remain a trophy class. 4400 Purse will remain $10,000 per regional race payable to 3rd.
Guaranteed Series Purse for ALL Classes
All classes will have an East Coast and West Coast Series purse. This purse will be 30% of entry fees for the season and payable to 10th place for each class including legends class.
Reduced Fees for Drivers Committed to Racing the series.
Drivers that select the series committed price will receive a significant discount on their KOH entry fee along with discounted rates on next year's season entry fees. Driver's must commit to racing at least 3 regional races in addition to KOH to receive the discounted fee. Payment for the season at the reduced rate is due after KOH and before April 1st.