2021 Motorcycle Previews 2021 KTM Cross-Country Lineup First Look: GNCC Wrecking Crew

2021 KTM Cross-Country Lineup First Look: GNCC Wrecking Crew

With a focus on the GNCC Racing series, KTM has a six-model cross-country lineup of off-road racing motorcycles. There are three-each of two-strokes and four-strokes, including the new 2021 KTM 125 XC two-stroke racer. All six dirt bikes share the same chassis, so let’s take a look at the common (and model-specific) upgrades for 2021.

  • Updated WP Xact fork. The latest version of the WP Xact fork gets new internals that have larger oil and air bypasses. The goal is to reduce pressure peaks for smoother action. Additionally, there’s a new mid-valve damping system, further improving feel. The fork also has a smaller rebound spacer to increase air volume, resulting in more-consistent air-spring action.

2021 KTM 125 XC

  • New link-piston O-ring for the WP Xact shock. KTM says this mod will keep shock action more consistent over long races.
  • New linkage-bearing seals. For smoother rear suspension action, the SKF bearing seals are less restrictive than the earlier version.
  • Suspension settings updated. To match the mods to the fork, shock, and linkage, the suspension settings are adjusted accordingly.

2021 KTM 450 XC-F

  • 450 XC-F motor updates. The SOHC engine has a new connection rod for faster revving, new engine mapping with a focus on low-end power, a more durable shift locker, and a more robust hour meter casing with a new mounting.
  • New throttle assembly for XC two-strokes. Using roller actuation, the throttle action will be smoother and extend the life of the throttle cable.

2021 KTM 125 XC

  • The 2021 KTM 125 XC is a modified 125 SX. Although a new model, the 125 XC is basically the 125 SX with electric start, a sidestand, and a larger translucent fuel tank.

2021 KTM 450 XC-F (350 XC-F and 250 XC-F) Specs

ENGINE

  • Type: Single-cylinder four-stroke
  • Displacement: 450cc  (350 XC-F: 350cc; 250 XC-F: 250cc)
  • Bore x stroke: 95 x 63.4mm (350 XC-F: 88 x 57.5mm; 250 SC-F: 78 x 52.3mm)
  • Compression ratio: 12.75:1 (350 XC-F: 14.2:1; 250 SX-F: 14.4:1)
  • Valvetrain: SOHC, 4 valves (350 XC-F and 250 SX-F: DOHC, 4 valves)
  • Starting: Electric w/ Lithium-ion 12.8-volt 2 Ah battery
  • Lubrication: Pressure lubrication w/ 2 pumps
  • Fueling: Keihin EFI w/ 44mm throttle body
  • Transmission: 5-speed (350 XC-F and 250 XC-F: 6-speed)
  • Clutch: Wet multi-disc DDS clutch w/ Brembo hydraulics
  • Final drive: 5/8” x ¼” chain

CHASSIS

  • Frame: Central double-cradle chromoly steel
  • Subframe: Aluminum
  • Handlebar: Neken tapered aluminum
  • Front suspension: Fully adjustable WP Xact inverted 48mm fork; 12.2 inches
  • Rear suspension: Linkage-assisted fully adjustable WP Xact shock; 11.8 inches
  • Wheels: Giant
  • Front wheel: 21 x 1.60
  • Rear wheel: 18 x 2.15
  • Tires: Dunlop Geomax AT81
  • Front tire: 90/90 x 21
  • Rear tire: 110/100 x 18
  • Front brake: 260mm disc w/ Brembo caliper
  • Rear brake: 220mm disc w/ Brembo caliper

DIMENSIONS and CAPACITIES

  • Wheelbase: 58.5 inches (± 0.4 in)
  • Rake: 26.1 degrees
  • Triple clamp offset: 22mm
  • Seat height: 37.4 degrees
  • Ground clearance: 14.6 inches
  • Fuel capacity: 2.25 gallons
  • Curb weight: 236 pounds (350 XC-F and 250 XC-F: 234 pounds)

2021 KTM 300 XC TPI (250 XC TPI and 125 XC) Specs

ENGINE

  • Type: Single-cylinder two-stroke
  • Displacement: 293cc (250 XC TPI: 249cc; 125 XC: 125cc)
  • Bore x stroke: 72 x 72mm (250 XC TPI: 66.4 x 72mm; 125 XC: 54 x 54.5mm)
  • Starting: Electric w/ 12.8-volt 2 Ah battery (125 XC: Kickstart backup)
  • Lubrication: Electronically controlled (125 XC: 40:1 premix)
  • Fueling: EFI w/ Dell’Orto 39mm throttle body (125 XC: 38mm Mikuni TX carburetor)
  • Transmission: 6-speed
  • Clutch: Wet multi-disc DDS clutch w/ Brembo hydraulics
  • Final drive: 5/8” x ¼” chain

CHASSIS

  • Frame: Central double-cradle chromoly steel
  • Subframe: Aluminum
  • Handlebar: Neken tapered aluminum
  • Front suspension: Fully adjustable WP Xact inverted 48mm fork; 12.2 inches
  • Rear suspension: Linkage-assisted fully adjustable WP Xact shock; 11.8 inches
  • Wheels: Giant
  • Front wheel: 21 x 1.60
  • Rear wheel: 18 x 2.15
  • Tires: Dunlop Geomax AT81
  • Front tire: 90/90 x 21
  • Rear tire: 110/90 x 18
  • Front brake: 260mm disc w/ Brembo caliper
  • Rear brake: 220mm disc w/ Brembo caliper

DIMENSIONS and CAPACITIES

  • Wheelbase: 58.5 inches (± 0.4 in)
  • Rake: 26.1 degrees
  • Triple clamp offset: 22mm
  • Seat height: 37.4 degrees
  • Ground clearance: 14.6 inches
  • Fuel capacity: 2.6 gallons
  • Curb weight: 236 pounds (125 XC: 209 pounds)

2021 KTM Cross-Country Lineup Photo Gallery

Don Williams
Don Williamshttp://www.ultimatemotorcycling.com
With 50 years of riding experience, Don Williams is a fan of all kinds of motorcycles. He enjoys sport bikes, cruisers, dirt bikes, touring bikes, adventure bikes, dual sport bikes, and rideable customs. Ask Don what his favorite bike is and he will tell you, "Whatever bike I'm on."

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