2020 Factory Supercross Bikes—Justin Bogle’s KTM 450 SX-F

Rocky Mountain ATV/MC-WPS-KTM’s factory-supported premier class machine.

Justin Bogle is in his second full year with the Rocky Mountain ATV/MC-WPS-KTM team in 2020.
Justin Bogle is in his second full year with the Rocky Mountain ATV/MC-WPS-KTM team in 2020.Spencer Owens

Justin Bogle has enjoyed plenty of success in his professional racing career. The Oklahoma native won the 2014 Eastern Regional 250SX Class Championship racing for the Geico Honda team and finished in the runner-up spot in the series the following year before moving up to the 450 class in 2016 with Geico Honda. For 2017, Bogle was signed by the now-defunct RCH/Yoshimura/Suzuki Factory Racing organization before he transitioned over to the JGRMX/Yoshimura/Suzuki Factory Racing team for the 2018 season.

Bogle’s mechanic Derek Rankin gave us the inside scoop on the Oklahoman’s KTM 450 SX-F.
Bogle’s mechanic Derek Rankin gave us the inside scoop on the Oklahoman’s KTM 450 SX-F.Spencer Owens

When Rocky Mountain ATV/MC-WPS-KTM’s Benny Bloss injured his knee prior to the beginning of the 2019 Monster Energy AMA Supercross series, Bogle was chosen to fill in and remained with the factory KTM-supported effort through the entire year, earning ninth overall in both the 2019 Monster Energy AMA Supercross series and 2019 Lucas Oil AMA Pro Motocross Championship. For 2020, the team signed the 26-year-old to a full-time ride. To learn more about Bogle’s racebike, we asked his mechanic Derek Rankin to give us the details on his KTM 450 SX-F.

The team’s engines are built by factory KTM and, according to Rankin, Bogle’s powerplant is mostly stock.
The team’s engines are built by factory KTM and, according to Rankin, Bogle’s powerplant is mostly stock.Spencer Owens

The team’s engines are built by factory KTM and according to Rankin, Bogle’s powerplant is mostly stock. The ECU is standard and KTM handles the mapping of it in-house. An FMF Factory 4.1 RCT titanium exhaust system is used, and Bogle opts for a longer Megabomb Plus header pipe to help suit his power delivery preferences.

“Justin likes a lot of hit off the bottom,” Rankin explained. “He just wants it to rip out of his hands. I think that’s the way he likes the KTM now; I think his Honda was set up a little bit different, but with the KTM that’s the way he likes it.”

Hinson Racing clutch components are used inside the engine including the basket, pressure plate, and clutch plates. Rankin told us Bogle is very smooth and doesn’t use the clutch very much.
Hinson Racing clutch components are used inside the engine including the basket, pressure plate, and clutch plates. Rankin told us Bogle is very smooth and doesn’t use the clutch very much.Spencer Owens

The 2020 KTM four-stroke motocross models come stock with an optional perforated airbox cover, which is what Bogle uses. The team runs DT1 air filters, Motorex oil, and Engine Ice coolant. Hinson Racing clutch components are used inside the engine including the basket, pressure plate, and clutch plates. Rankin mentioned that Bogle is very smooth and doesn’t use the clutch much at all, and that he checks it every two races and it’s still in good condition.

Like many factory KTM-supported Supercross and motocross racers, Bogle opts to run a WP Xact Pro 52mm fork and WP Xact Pro shock. Rankin mentioned that Bogle’s pretty picky about the rebound setting of the components—not so much the compression.
Like many factory KTM-supported Supercross and motocross racers, Bogle opts to run a WP Xact Pro 52mm fork and WP Xact Pro shock. Rankin mentioned that Bogle’s pretty picky about the rebound setting of the components—not so much the compression.Spencer Owens

Bogle runs a WP Xact Pro 52mm fork and WP Xact Pro shock on his 450 SX-F. Rankin told us his suspension isn’t on the soft or stiff side, but right about in the middle. Also, that he’s pretty picky about the rebound setting of the components—not so much the compression.

“WP does all of our stuff in-house,” Rankin said. “It’s kind of a package with KTM because it’s all one big family. We have our own suspension guy that does everything in-house [at] WP for us. He’ll come to the track with us to test too.”

An ODI Champ bend handlebar is mounted atop Xtrig ROCS triple clamps. Bogle is very particular about the placement of his controls and prefers to roll his bars back.
An ODI Champ bend handlebar is mounted atop Xtrig ROCS triple clamps. Bogle is very particular about the placement of his controls and prefers to roll his bars back.Spencer Owens
Found at each end of the handlebar are carbon fiber master cylinder guards provided by CDG Technology, along with ASV levers and ODI grips.
Found at each end of the handlebar are carbon fiber master cylinder guards provided by CDG Technology, along with ASV levers and ODI grips.Spencer Owens

The triple clamps are Xtrig ROCS units, which clamp the upper fork tubes from opposite directions; hence the acronym, “ROCS,” which stands for “Revolutionary Opposing Clamp System.” Mounted on top of them is an ODI Champ bend handlebar and ASV levers, and Bogle is particular about the placement of them.

“He is pickiest about [his] controls,” Rankin remarked. “That’s what he can really tell. If [they are] off a little bit, then he can tell for sure. He runs his bars back a little further, kind of like Ricky [Carmichael] did a little bit—not too crazy like [Carmichael], but he [rolls] them back for sure.”


As far as handling feel, Rankin told us Bogle just likes the bike to be balanced, and so long as it is, he’s fine. He also noted there’s not many titanium parts on the bike due to the fact that Bogle prefers to run a lot of steel components—the Pro Pegs titanium footpegs being one of the few exceptions.

Dubya supplies the team with wheels, which feature Excel Takasago rims and Talon Ultralite billet hubs. The spokes on both the front and rear wheel are safety-wired where they cross each other to prevent a broken spoke from causing further damage.
Dubya supplies the team with wheels, which feature Excel Takasago rims and Talon Ultralite billet hubs. The spokes on both the front and rear wheel are safety-wired where they cross each other to prevent a broken spoke from causing further damage.Spencer Owens

A Kite holeshot device is used at the front of the bike, which is positioned noticeably low on the fork guard. The pullrod on Bogle’s bike features a rear holeshot device, which holds the back end of the bike down on starts. Sunstar sprockets are used front and rear, along with a Regina chain. The wheels are provided by Dubya and feature Excel Takasago rims and Talon Ultralite billet hubs. The spokes on both wheels are safety wired where they cross each other to prevent a broken spoke from causing further damage.

The pullrod on Bogle’s bike features a rear holeshot device, which holds the back end of the bike down on starts.
The pullrod on Bogle’s bike features a rear holeshot device, which holds the back end of the bike down on starts.Spencer Owens

Protecting the front brake master cylinder and clutch master cylinder from roost are carbon fiber guards supplied by CDG Technology. Other carbon fiber components include the Akrapovič rear chain guide and Acerbis front brake disc cover, which covers the oversize Galfer Tsunami Wave rotor; the rear brake disc, on the other hand, is stock. Acerbis also provides the team with plastics, and HBD MotoGrafx are applied to them. Rounding out the package is a Seat Concepts seat, which Rankin told us is one of the few differences between Bogle and teammate Blake Baggett’s bike.

Rankin noted that the seat is one of the few differences between Bogle and teammate Blake Baggett’s bike. Being that he’s about 40 pounds lighter than Bogle, Baggett runs a hump in his, while Bogle does not.
Rankin noted that the seat is one of the few differences between Bogle and teammate Blake Baggett’s bike. Being that he’s about 40 pounds lighter than Bogle, Baggett runs a hump in his, while Bogle does not.Spencer Owens

“Blake runs a hump in his seat because he’s 135 [or] 140 pounds compared to Justin at 180 pounds. Other than that, we run our bikes the same,” Rankin concluded.