The USRA B-Mod division has grown dramatically in popularity in recent years. The requirement for a stamped rocker arm in our standard engine package has been discussed thoroughly and has had its share of controversy. The reason this rule exists is to limit the valve train of this engine.

The rule book is a set of limitations for what the racer is permitted to do with the race car, including the engine with has limitations cubic inches, compression, rod type, crank type, head numbers, intake numbers and more. The valve train has very few limitations other than the rocker arm. ALTERNATOR

A stamped rocker arm will withstand only so much stress before it fails and the racer has to build a valve train within that tolerance. What is happening more frequently is that racers are willing to exceed that limitation to gain a performance advantage with the risk of a part failure, which is usually the rocker arm.

One of the areas they are exceeding that limitation is the valve spring pressure. Low quality rocker arms and the flat tappet cam quality declining has added to this dilemma. We have noticed these parts are failing from excessively aggressive valve trains being too much stress on the rocker arms, and from simply poor quality.

Because of these issues we feel that we need to implement a valve spring rule. This will reduce the need to stress parts for performance and lessen the potential of these parts from failing due to poor quality. Since we will now have a controlled spring rule then we can remove the limitation of the required stamped rocker arm and allow a full roller rocker arm with the standard engine.

Effective January 1, 2023, if you choose to utilize a full roller rocker arm then you will have to adhere to the new valve spring rule, or you can stay with the current stamped rocker arm rule and the current spring rule will be permitted. However, the new spring rule will be enforced with all standard engines beginning in 2024.

See Rules 13.7.12 and 13.8.12 for amendments to these rules. You can download rules for all USRA classes at usraracing.com/rules.

Continuing to crush it: Year after year, the USRA continues to attract more racetracks and dirt track racers through fair, logical and cost-effective rules accompanied by an organization that puts the racers, racetracks and their fans first. During the 2022 Summit USRA Weekly Racing Series, more than 50 of America’s finest dirt ovals hosted over 1,000 nights of racing.

To learn more, check out usraracing.com for schedules, points, photos, souvenirs, videos and more. Follow our social media channels on Facebook, Instagram, Twitter and YouTube. Click here to get USRA news delivered to your inbox.

USRA OFFICIAL SPONSORS: American Racer Racing Tires, Beyea Headers, Chevrolet Performance, Christie Door Company, Fast Shafts, FK Rod Ends, K1 RaceGear by Ryan Bowers, KS Engineering, KSE Racing Products, Mesilla Valley Transportation, MSD, Nitroquest Media, PEM Racing Gears & Drivetrain, RacinDirt, Summit Racing Equipment, Sunoco Race Fuels.

USRA PARTICIPATING SPONSORS: ARMI Contractors, Boubin Tire & Automotive, Brodix Cylinder Heads, DAY Motorsports, Innovative AutoGlass & Window Tint, PBM Performance Products, Star 1 Roofing & Construction, Stealth Oilwell Services, Texas Locomotive Solutions, TNT Auto Parts, YouDirt.com.

USRA CONTINGENCY SPONSORS: AFCO Racing Products, Allstar Performance, Bryke Racing, BSB Manufacturing, Champ Pans, Edelbrock, Hooker Harness, Integra Racing Shocks & Springs, JE Pistons, Keyser Manufacturing, Landrum Performance Springs, Medieval Chassis, Performance Bodies & Parts, QA1, RacerWebsite.com, Real Racing Wheels, Swift Springs, Sybesma Graphics, Wehrs Machine & Racing Products, Wilwood Disc Brakes Five1seven Designs, Four Seven Designs Salon & Boutique, Hi-Tek Paving, Jerovetz Motorsports Racing Parts, Penske Racing Shocks, Race Smart Wraps, S&S Fishing & Rental, Traeger Wood Pellet Grills by Elliott Motorsports.

USRA RACETRACKS: 67 Speedway of Texarkana, 81 Speedway, Alien Motor Speedway, Ark-La-Tex Speedway, Arrowhead Speedway, Big O Speedway, Boothill Speedway, Callaway Raceway, Caney Valley Speedway, Cedar Lake Speedway, Chateau Speedway, Crawford County Speedway, Cresco Speedway, Dallas County Speedway, Deer Creek Speedway, Diamond Park Speedway, Eagle Valley Speedway, Elk City Motorsports Park, Fairmont Raceway, Fayette County Speedway, Gondik Law Speedway, Hamilton County Speedway, Humboldt Speedway, I-35 Speedway, I-90 Speedway, Lakeside Speedway, Lawton Speedway, Longdale Speedway, Lucas Oil Speedway, Mason City Motor Speedway, Midway Speedway, Mississippi Thunder Speedway, Pike County Speedway, Rapid Speedway, Rocket Raceway Park, Sabine Speedway, Sports Park Raceway, Springfield Raceway, Super Bee Speedway, Superbowl Speedway, Thunder Valley Speedway, Tomahawk Speedway, Tri-State Speedway, Tulsa Speedway, Vado Speedway Park, West Texas Raceway, Winneshiek Raceway.

USRA Modifieds 1   Tyler Davis 4491 2   Dillon McCowan 4450 3   Dustin Hodges 4345 4   Tyler Hibner 4309 5   Tad Davis 4302

Medieval USRA Stock Car 1   Mitch Hovden 4399 2   Josh Zieman 4334 3   Rob Moseley 4304 4   Derek Green 4295 5   Bryan White 4284

USRA B-Mods 1   Joe Chisholm 4595 2   Kris Jackson 4533 3   Shadren Turner 4501 4   Dan Hovden 4474 5   Ryan Gillmore 4464

USRA Hobby Stocks 1   Dylan Clinton 4553 2   Dustin Gulbrandson 4509 3   Levi Vander Weide 4356 4   Chris Hovden 4327 5   Jeremy Crimmins 4295

USRA Late Models 1   Dylan Kromschroeder 4251 2   Lance Hofer 4057 3   Kory Ressie 3994 4   Justin Sass 3862 5   Chad Prissel 3860

USRA Tuners 1   Oliver Monson 4383 2   Justin Converse 4295 3   Brad Stahl 4277 4   Greyson Wooten 4266 5   Justin Day 4058

USRA Limited Mods 1   Rowdy Day 4415 2   Billy Brierton 4168 3   Adam Roy 4164 4   Josh Cournoyer 4107 5   Aaron Roy 4083

Sunoco USRA Factory Stocks 1   Neil Kemp 4358 2   Kenneth Chamberlain 4024 3   Deaon Redmon 3990 4   Todd Collier 3828 5   Michael Smith 3807

The inaugural Eiffel Tower Classic presented by RaceOnTexas happens Wednesday through Saturday, February 8-11, at the Rocket Raceway Park in Petty, Texas, with a possible $10,000 up for grabs for one

Registration is open for racers planning to compete in the Summit USRA Weekly Racing Series during the 2023 calendar year. Up from the 300 announced a few weeks ago, Summit Racing Equipment has upped

Integra Racing Shocks and Springs is returning in 2023 as a contingency sponsor for competitors in the Summit USRA Weekly Racing Series. In addition to padding the national points funds for USRA co

The leader in innovative and cutting edge products for the racing industry, Keyser Manufacturing is back on board as a contingency sponsor for Summit USRA Weekly Racing Series competitors in 2023.

The United States Modified Touring Series (USMTS) and United States Racing Association (USRA) will host a joint awards banquet on Saturday, February 4, at Harrah's Kansas City Hotel &

FK Rod Ends is returning as the Official Rod Ends of the USRA and will present the FK Hard Charger Award to 20 drivers at the 10th Annual Summit USRA Nationals, October 3-7, at the Lucas Oil speedway

Bryke Racing is returning for a fifth season as an important marketing partner with the United States Racing Association for the 2023 racing season. In addition to contributing to the year-end poin

The new 2023 season schedule for the Thunder Valley Speedway is here with a pair of Summit USRA Weekly Racing Series divisions on the calendar for the first time. Saturdays will feature USRA Limite

Rocker Lever Shaft © Copyright 2023 United States Racing, LLC