2020 Factory Supercross Bikes—Cameron McAdoo’s Kawasaki KX250

First-year Monster Energy/Pro Circuit/Kawasaki rider’s Supercross racebike.

Cameron McAdoo is one of two new riders on the Monster Energy/Pro Circuit/Kawasaki team for 2020.
Cameron McAdoo is one of two new riders on the Monster Energy/Pro Circuit/Kawasaki team for 2020.Spencer Owens

Since his professional racing debut in the Monster Energy AMA Supercross series in 2017, Cameron McAdoo has put himself further forward in the field in the highly competitive 250SX class. The Sioux City, Iowa, native competed in the Eastern Regional 250SX Class Championship during his rookie year, where he captured three top-10 finishes. He raced in the same division the following year in 2018, but his season was cut short due to a hand injury he sustained at round 9 in Atlanta. Last year was McAdoo’s best to date, where he finished fifth overall in the Western Regional 250SX Class Championship.

McAdoo’s mechanic Kyle Defoe provided us with some interesting information about his new rider’s Kawasaki KX250 at the Anaheim 1 season opener.
McAdoo’s mechanic Kyle Defoe provided us with some interesting information about his new rider’s Kawasaki KX250 at the Anaheim 1 season opener.Spencer Owens

After racing for multiple high-level teams since turning pro—including Smartop/Bullfrog Spas/MotoConcepts Honda, Geico Honda, and Troy Lee Designs/Red Bull/KTM—McAdoo secured a ride with the Monster Energy/Pro Circuit/Kawasaki team for 2020, and is contesting the Western Regional 250SX Class Championship for the second time. The day before McAdoo’s debut race with the team at Anaheim 1, we chatted with his mechanic Kyle Defoe, who graciously provided us with some interesting information about his new rider’s Kawasaki KX250.

Larger radiators, a Pro Circuit water pump cover and impeller, Pro Circuit billet clutch cover, and Pro Circuit silicone radiator hoses adorn the exterior of the bike.
Larger radiators, a Pro Circuit water pump cover and impeller, Pro Circuit billet clutch cover, and Pro Circuit silicone radiator hoses adorn the exterior of the bike.Spencer Owens

Pro Circuit’s racebikes are known to be some of the fastest in the 250SX class, evidenced by Austin Forkner’s plethora of holeshots in the Eastern Regional 250SX Class series last year. The engines are built in-house at the team’s Corona, California, race shop. Twin Air provides the team with air filters, while a Pro Circuit airboot is employed to increase airflow into the engine. Other Pro Circuit items include a billet ignition cover, clutch cover, and a Ti-6 Pro exhaust system to ensure the bike passes AMA/FIM sound regulations.

McAdoo likes to use first gear and prefers to have lots of bottom-end power. The team does some cam timing in the engine to accomplish the latter.
McAdoo likes to use first gear and prefers to have lots of bottom-end power. The team does some cam timing in the engine to accomplish the latter.Spencer Owens

Hinson Racing clutch components are used inside the engine, while a CMI shifter graces the left side of the powerplant. Keeping the high-strung engine cool is a high priority for the team, hence the larger radiators, coolant catch can mounted on the frame behind the right-side radiator shroud, Pro Circuit water pump cover and impeller, and Pro Circuit silicone radiator hoses. Maxima Racing Oils provides many of the chemicals the team uses as well.

A custom coolant catch can is mounted on the frame behind the right-side radiator shroud to ensure the bike doesn’t lose any coolant during the course of a race.
A custom coolant catch can is mounted on the frame behind the right-side radiator shroud to ensure the bike doesn’t lose any coolant during the course of a race.Spencer Owens

“Cameron is pretty basic,” Defoe began. “He really likes first gear and our bike is really good in first gear; it pulls a long way. He also likes a lot of bottom-end power, which I feel like most 250 riders are very similar [in that way], so he likes the response right off the bottom. We do a little bit of cam timing in the engine to make it more responsive for him.”

Pro Circuit handles the setup of the Showa A-Kit suspension components in-house, and Defoe told us McAdoo prefers both the fork and shock to be very stiff to prevent bottoming.
Pro Circuit handles the setup of the Showa A-Kit suspension components in-house, and Defoe told us McAdoo prefers both the fork and shock to be very stiff to prevent bottoming.Spencer Owens

Showa A-Kit suspension is used front and rear. Pro Circuit handles the setup of the components in-house, and Defoe told us that McAdoo’s setup is on the firm side.

“Cameron likes his suspension very stiff,” Defoe mentioned. “He likes to be able to blow through a jump into another jump and not have it bottom out, which is ideal, but it also gets a little bit tricky with valving and how the bike handles in smaller bumps. So the suspension has been tricky with him, but we’ve got it dialed now.”

A works Nissin front brake caliper made out of magnesium is one of the many trick parts on McAdoo’s machine.
A works Nissin front brake caliper made out of magnesium is one of the many trick parts on McAdoo’s machine.Spencer Owens

Being that Mitch Payton’s team is the factory Kawasaki effort in the 250SX class, McAdoo’s machine unsurprisingly has some special factory parts from Kawasaki Heavy Industries (KHI) along with a multitude of carbon fiber bits including the front disc cover, skid plate, case saver, rear brake caliper guard, and chain guide, the latter of which can be purchased from Pro Circuit for $305.95.

“We run Excel A60 hoops with factory hubs,” Defoe told us. “We’ve also got a works front brake [caliper] made out of magnesium. A lot of our carbon [fiber] work we get done from Asterisk USA.”

Factory hubs are laced to Excel A60 rims.
Factory hubs are laced to Excel A60 rims.Spencer Owens

Other components that adorn McAdoo’s bike include the Pro Circuit linkage, Braking front and rear brake discs, an ARC clutch perch, clutch lever, and front brake lever, Rtech plastics, and a Throttle Syndicate seat cover and graphics. Renthal provides the sprockets, grips, chain, and handlebar.

“He’s quite neutral with his cockpit setup,” Defoe explained. “He runs a standard seat. He likes a firm seat; he’s younger, so he’s not too picky about it. He goes with Renthal dual Kevlar grips. He sometimes likes to tip over, so we like those dual Kevlars [as they] hold up pretty well. He’s not too picky about gripping his bike either. He’s very strong, so he does most of the legwork himself; I just do a little bit of gripper tape on the frame, but besides that, he’s pretty simple.”

Every ounce counts. The team uses a multitude of carbon fiber bits to save weight, such as this rear brake caliper guard.
Every ounce counts. The team uses a multitude of carbon fiber bits to save weight, such as this rear brake caliper guard.Spencer Owens

Like many of the factory teams in the Monster Energy AMA Supercross pits, the Pro Circuit team relies on Dunlop tires, another aspect of the bike Defoe told us McAdoo isn’t picky about.

“He’s pretty basic with the tires,” Defoe said. “He likes a 120 [size] rear in flatter conditions like Anaheim, Arizona, Las Vegas, and [tracks] like that. Once we go East Coast with some of the deeper ruts, he prefers a skinnier 110.”

Despite being very neutral in his setup, one thing McAdoo is particular about is his front brake lever position.

“He likes to run his front brake lever very close to his grip, which makes it tricky for having the brake lever perfect and no air in the line because it’s very sensitive to any type of fading during the race because the lever is so close,” Defoe concluded.