2019 Factory Off-Road Bikes—Cody Barnes’ Beta 250 RR

National Enduro weapon equipped with Build Your Own Beta (BYOB) parts.

Cody Barnes’ 2019 Beta 250 RR.
Cody Barnes’ 2019 Beta 250 RR is basically a stock bike with a multitude of aftermarket goodies available through Beta USA’s Build Your Own Beta (BYOB) program.Shan Moore

Cody Barnes has been turning in some impressive performances in this year's Kenda AMA National Enduro Series. In four rounds, the Beta USA rider has won the NE Pro2 division twice and, at the latest round in Georgia, he scored an overall podium with an impressive third-place overall finish. After the race, Barnes gave us an exclusive look at his 2019 Beta 250 RR.

Since he’s a tall rider at 6-foot-4, Barnes runs a taller Seat Concepts seat. He also uses a different bar bend—the Renthal Twinwall 998, which are just a little bit taller than the stock bar, and ARC folding levers, which are available through Beta USA. Enduro Engineering Debris Deflectors are mounted to fend off branches and limbs, and for the Georgia race, he added an extra strip of tape along the bottom to keep mud away from the grips.

Because he rides toward the rear of the bike and sits farther back as well, Barnes has his ZF Sachs shock valved a little stiffer than normal, which prevents the rear end of the bike from riding too low in the stroke due to his weight being farther back. Beta USA does all the work in-house by its suspension guy, Bryce Rivera. Barnes adjusts the ZF Sachs fork to match the shock for a balanced ride.

The Georgia race was wet and slippery, and in those conditions, Barnes told us he runs a G2 throttle cam, which is designed to slow the throttle response.

“It just makes the power delivery a little bit smoother so you’re not blowing the rear tire off in all the slick stuff,” Barnes said.

Cody Barnes’ 2019 Beta 250 RR with FMF Factory Fatty header pipe and Powercore 2.1 muffler.
Barnes runs an FMF Factory Fatty header pipe and Powercore 2.1 muffler, for more bottom-end. Meanwhile, the clutch is a Rekluse manual unit.Shan Moore

The front and rear brake calipers and rotors are standard; however, Barnes runs stainless front and rear brake lines that are available through Beta USA. As far as the gearing, he uses the standard 14-tooth up front, but swaps out the stock 49-tooth on the rear for a 50-tooth so he can use third gear a little more often.

“For the National Enduros, since they’re a little bit tighter, the 50-tooth helps it in the tight stuff a little bit,” Barnes offered. “If you’re in a higher gear, let’s say second or third, it just helps it get up and going easier.”

Cody Barnes’ 2019 Beta 250 RR with adjusted BPV power valve.
In muddy conditions, Barnes adjusts the BPV power valve two to three turns in so the engine has a smoother power delivery.Shan Moore

Barnes runs several accessories that are available through Beta USA’s Build Your Own Beta (BYOB) program including a billet oil filler cap, Samco silicone radiator hoses, and a high-performance water pump kit. His engine is mostly stock, but he adds a few parts and makes minor adjustments to suit his preferences. For slippery conditions, like at the Georgia race, Barnes turns the BPV power valve in two to three turns so the engine has a smoother power delivery.

“[I do that] so it’s not just blowing the rear tire off in the mud,” Barnes explained. “But besides that, there’s not really a whole lot that we changed. We just make sure everything’s all tight and ready to go.”

Cody Barnes’ 2019 Beta 250 RR with Enduro Engineering Debris Deflectors.
Barnes uses Enduro Engineering Debris Deflectors to fend off branches and limbs and, for the Georgia race, added an extra strip of tape along the bottom to keep mud away from the grips.Shan Moore

A Rekluse manual clutch is used in the bike, which Barnes says works great, with no problems at all. “The Rekluse just feels solid and consistent,” Barnes said. “We run 700cc [of oil] in the [250 RR], which is the same as the Beta 125 RR. Pretty much everything to spec from the book.”

Another addition is the FMF Factory Fatty header pipe and Powercore 2.1 muffler, which Barnes told us helps in the woods. “The Powercore 2.1 makes [the bike] have a little bit better bottom-end, which makes it easier in the tight stuff to get up and go better,” he added.

Other than the Rekluse clutch and FMF exhaust system, Barnes’ engine is basically stock, including the 178 main jet in his stock Keihin PXK 36mm carburetor.