BUILT TO BEAT THE BEST

2025 KTM 300 EXC HARDENDURO

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2025 KTM 300 EXC HARDENDURO

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The 2025 KTM 300 EXC HARDENDURO is ready to roll out of the racing van and onto the prologue starting line. Based on the already legendary KTM 300 EXC, the HARDENDURO sets itself apart with an exclusive HARDENDURO parts package. Hardcore protection parts, pull-straps, CNC-machined components – not to mention full-adjustable closed cartridge forks – and a totally unique graphics kit, makes this the ultimate HARDENDURO package for tackling the World's toughest offroad championship. 2025 KTM 300 EXC HARDENDURO highlights are:

  • ORANGE GLOSSY FRAME
  • KTM HARDENDURO BAR PAD
  • FACTORY RACING FRAME PROTECTION SET
  • FACTORY RACING SEAT
  • MAP-SELECT SWITCH
  • FACTORY WHEEL SET
  • WRAP-AROUND HANDGUARD KIT
  • RADIATOR FAN
  • BLACK ANODIZED CNC MACHINED TRIPLE CLAMPS
  • SKID PLATE
  • SEMI-FLOATING FRONT BRAKE DISC
  • FRONT BRAKE DISC GUARD
  • SOLID REAR BRAKE DISC
  • REAR BRAKE SAFETY WIRE
  • ORANGE REAR BRAKE DISC GUARD
  • ORANGE SUPERSPROX STEALTH REAR SPROCKET
  • CLUTCH SLAVE CYLINDER PROTECTION
  • SUPPORTING STRAPS
  • METZELER 6 DAYS EXTREME TIRES

    This motorcycle is designed, developed and produced in Austria.
  • PHO_BIKE_90_RE_MY25-KTM-300-EXC-HARDENDURO-studio-90-degree-right_#SALL_#AEPI_#V1.png
    PHO_BIKE_90_HI_MY25-KTM-300-EXC-HARDENDURO-studio-90-degree-rear-right_#SALL_#AEPI_#V1.png
    PHO_BIKE_90_LI_MY25-KTM-300-EXC-HARDENDURO-studio-90-degree-left_#SALL_#AEPI_#V1.png
    PHO_BIKE_90_REVO_MY25-KTM-300-EXC-HARDENDURO-studio-90-degree-front-right_#SALL_#AEPI_#V1.png
The 2025 KTM 300 EXC HARDENDURO is ready to roll out of the racing van and onto the prologue starting line. Based on the already legendary KTM 300 EXC, the HARDENDURO sets itself apart with an exclusive HARDENDURO parts package. Hardcore protection parts, pull-straps, CNC-machined components – not to mention full-adjustable closed cartridge forks – and a totally unique graphics kit, makes this the ultimate HARDENDURO package for tackling the World's toughest offroad championship. 2025 KTM 300 EXC HARDENDURO highlights are:

  • ORANGE GLOSSY FRAME
  • KTM HARDENDURO BAR PAD
  • FACTORY RACING FRAME PROTECTION SET
  • FACTORY RACING SEAT
  • MAP-SELECT SWITCH
  • FACTORY WHEEL SET
  • WRAP-AROUND HANDGUARD KIT
  • RADIATOR FAN
  • BLACK ANODIZED CNC MACHINED TRIPLE CLAMPS
  • SKID PLATE
  • SEMI-FLOATING FRONT BRAKE DISC
  • FRONT BRAKE DISC GUARD
  • SOLID REAR BRAKE DISC
  • REAR BRAKE SAFETY WIRE
  • ORANGE REAR BRAKE DISC GUARD
  • ORANGE SUPERSPROX STEALTH REAR SPROCKET
  • CLUTCH SLAVE CYLINDER PROTECTION
  • SUPPORTING STRAPS
  • METZELER 6 DAYS EXTREME TIRES

    This motorcycle is designed, developed and produced in Austria.
  1. Prologue
  2. Benchmark lap
  3. On the charge
  4. Keeping you going
Prologue

01. Prologue

SETTING THE SAG
SETTING THE SAG

Adjustability

Getting READY TO RACE has never been easier. The 2025 KTM EXC range boasts a tool-free suspension setup at both ends. At the rear, our legendary, race-winning PDS technology features hand-adjustable dual compression controls, allowing riders to adjust high- and low-speed settings in a matter of seconds. On the front, the forks are also easily adjusted thanks to hand-adjustable clickers on the bottom of the fork shoe and on the fork top cap, making changing settings on the fly as easy as twisting the throttle.

DEEP BREATH
DEEP BREATH

Air filter box

The air filter box is designed to ensure maximum airflow with minimal water intrusion. Precision in how the inlet ducts are positioned is aimed at preventing air deformation and maintaining filter protection. An enduro-specific splash protector under the airbox prevents water or dirt from splashing up from the rear wheel, while the Twin Air filter and air filter support design features a simple fail-proof mounting system for safe and accurate filter installation. All this ensures the air filter is easily accessed, without tools, for fast track-side maintenance.

FULLY FUELED
FULLY FUELED

Fuel Tank

The transparent, polythene (XPE) fuel tank is a signature element of the KTM Enduro lineup. Having undergone thorough race testing in everything from the GNCC to the hardest of FIM hard enduros, these tanks are built, well, like tanks! A one-piece fuel pump and filter manage fuel supply, while servicing is made extra simple with easy fuel filter access. What's more, an updated fuel tank roll now holds the tank more firmly in place and protects the frame against scrubbing.

SWITCH IT UP
SWITCH IT UP

Switchgear

On the right side of the handlebar, you'll find a new, sleeker start/stop switch, and on the left, a Mapping Select switch will allow riders to choose between Map 1 or Map 2 - standard on the HARDENDURO.

UNMISTAKABLE
UNMISTAKABLE

Graphics

The 2025 KTM 300 EXC HARDENDURO is hard to miss, with striking white-on-black graphics, and a ribbed black seat cover all overlayed onto black and orange fenders, it makes a statement. This is one graphics package you won't want to swap out.

Prologue
SETTING THE SAG
SETTING THE SAG

Adjustability

Getting READY TO RACE has never been easier. The 2025 KTM EXC range boasts a tool-free suspension setup at both ends. At the rear, our legendary, race-winning PDS technology features hand-adjustable dual compression controls, allowing riders to adjust high- and low-speed settings in a matter of seconds. On the front, the forks are also easily adjusted thanks to hand-adjustable clickers on the bottom of the fork shoe and on the fork top cap, making changing settings on the fly as easy as twisting the throttle.
SETTING THE SAG
Prologue
DEEP BREATH
DEEP BREATH

Air filter box

The air filter box is designed to ensure maximum airflow with minimal water intrusion. Precision in how the inlet ducts are positioned is aimed at preventing air deformation and maintaining filter protection. An enduro-specific splash protector under the airbox prevents water or dirt from splashing up from the rear wheel, while the Twin Air filter and air filter support design features a simple fail-proof mounting system for safe and accurate filter installation. All this ensures the air filter is easily accessed, without tools, for fast track-side maintenance.
DEEP BREATH
Prologue
FULLY FUELED
FULLY FUELED

Fuel Tank

The transparent, polythene (XPE) fuel tank is a signature element of the KTM Enduro lineup. Having undergone thorough race testing in everything from the GNCC to the hardest of FIM hard enduros, these tanks are built, well, like tanks! A one-piece fuel pump and filter manage fuel supply, while servicing is made extra simple with easy fuel filter access. What's more, an updated fuel tank roll now holds the tank more firmly in place and protects the frame against scrubbing.
FULLY FUELED
Prologue
SWITCH IT UP
SWITCH IT UP

Switchgear

On the right side of the handlebar, you'll find a new, sleeker start/stop switch, and on the left, a Mapping Select switch will allow riders to choose between Map 1 or Map 2 - standard on the HARDENDURO.
SWITCH IT UP
Prologue
UNMISTAKABLE
UNMISTAKABLE

Graphics

The 2025 KTM 300 EXC HARDENDURO is hard to miss, with striking white-on-black graphics, and a ribbed black seat cover all overlayed onto black and orange fenders, it makes a statement. This is one graphics package you won't want to swap out.
UNMISTAKABLE
Benchmark lap

02. Benchmark lap

SMARTER ELECTRONICS
SMARTER ELECTRONICS

Offroad Control Unit

The Offroad Control Unit - or OCU - is located under the seat and replaces all the electronic fuses and relays. All outputs are switched depending on signals from the voltage regulator and the ECU continuously. In the event of over-current, outputs are deactivated individually. This makes for easy error detection as the status of each output is indicated by a red or green LED light. This means diagnosing an electrical issue out on the trail is as easy as lifting the seat, and there's no more need to carry fiddly fuses.

FUELING SPEED
FUELING SPEED

Throttle Body Injection

​The ​2025 KTM ​2-stroke ​Enduro models ​feature​ electronically​-controlled Throttle Body Injection​ - or TBI. The ECU​​, together with ​a Keihin​ ​39mm throttle body​,​calculates​ the ​ideal air-fuel mixture by constantly analyzing water temperature, air temperature, ambient pressure, ​and ​pressure within the crankcase, ​the ​rpm, and the throttle position​ to ensure the smoothest and most consistent power delivery​ in the most gnarly of ​enduro conditions.

PICK YOUR POWER
PICK YOUR POWER

Selectable Engine Maps

Designed for easy operation, the map select switch comes standard on the KTM HARDENDURO and allows for the easy selection of 2 unique engine maps. Map 1 is the standard, more linear, and predictable power map, while map 2 is a more aggressive map for added throttle response and more crisp, explosive power output.

LITHIUM POWERED
LITHIUM POWERED

Battery & Wiring Harness

As with the rest of the 2025 2-stroke EXC range, the KTM 300 EXC HARDENDURO is fitted with a proven, reliable electric start system. Powered by an ultra lightweight 2 Ah lithium-ion starter battery, it provides a safe, reliable starting time and time again, while the wiring harness has most of the electrical components carefully positioned under the seat for easy accessibility. 

FLUID RIDER MOTION
FLUID RIDER MOTION

Ergonomics

The 2025 KTM EXC range features a rider-focussed body-position triangle, especially when standing on the pegs. With the plastics working to expel mud buildup in wet, muddy conditions, a flat seat profile with a high grip seat cover providing exceptional rider movement and control, and a polyamide-reinforced aluminum subframe providing unmatched rider feel and feedback, your only concern is navigating the terrain ahead of you. 

UNMATCHED PERFORMANCE
UNMATCHED PERFORMANCE

Exhaust

Bringing the Braaap! Thanks to the KTM 300 EXC HARDENDURO's compact engine design, the header pipe is designed with the target of achieving more ground clearance and reducing the risk of damage​ when riding over​ deep roots​, ruts, or climbing steep rocks. ​The silencer is crafted from lightweight aluminum, saving weight and provides the signature low-down 2-stroke burble for this rock-hopping hero.

HARDENDURO EQUIPMENT
HARDENDURO EQUIPMENT

Top-shelf Componentry

The KTM 300 EXC HARDENDURO models receive the full hard enduro treatment. From the standard-fitted radiator fan to machined anodized triple clam, right down to a solid rear brake disc, with safety wire, each and every element on a HARDENDURO model is specifically chosen for the job at hand.

Benchmark lap
SMARTER ELECTRONICS
SMARTER ELECTRONICS

Offroad Control Unit

The Offroad Control Unit - or OCU - is located under the seat and replaces all the electronic fuses and relays. All outputs are switched depending on signals from the voltage regulator and the ECU continuously. In the event of over-current, outputs are deactivated individually. This makes for easy error detection as the status of each output is indicated by a red or green LED light. This means diagnosing an electrical issue out on the trail is as easy as lifting the seat, and there's no more need to carry fiddly fuses.
SMARTER ELECTRONICS
Benchmark lap
FUELING SPEED
FUELING SPEED

Throttle Body Injection

​The ​2025 KTM ​2-stroke ​Enduro models ​feature​ electronically​-controlled Throttle Body Injection​ - or TBI. The ECU​​, together with ​a Keihin​ ​39mm throttle body​,​calculates​ the ​ideal air-fuel mixture by constantly analyzing water temperature, air temperature, ambient pressure, ​and ​pressure within the crankcase, ​the ​rpm, and the throttle position​ to ensure the smoothest and most consistent power delivery​ in the most gnarly of ​enduro conditions.
FUELING SPEED
Benchmark lap
PICK YOUR POWER
PICK YOUR POWER

Selectable Engine Maps

Designed for easy operation, the map select switch comes standard on the KTM HARDENDURO and allows for the easy selection of 2 unique engine maps. Map 1 is the standard, more linear, and predictable power map, while map 2 is a more aggressive map for added throttle response and more crisp, explosive power output.
PICK YOUR POWER
Benchmark lap
LITHIUM POWERED
LITHIUM POWERED

Battery & Wiring Harness

As with the rest of the 2025 2-stroke EXC range, the KTM 300 EXC HARDENDURO is fitted with a proven, reliable electric start system. Powered by an ultra lightweight 2 Ah lithium-ion starter battery, it provides a safe, reliable starting time and time again, while the wiring harness has most of the electrical components carefully positioned under the seat for easy accessibility. 
LITHIUM POWERED
Benchmark lap
FLUID RIDER MOTION
FLUID RIDER MOTION

Ergonomics

The 2025 KTM EXC range features a rider-focussed body-position triangle, especially when standing on the pegs. With the plastics working to expel mud buildup in wet, muddy conditions, a flat seat profile with a high grip seat cover providing exceptional rider movement and control, and a polyamide-reinforced aluminum subframe providing unmatched rider feel and feedback, your only concern is navigating the terrain ahead of you. 
FLUID RIDER MOTION
Benchmark lap
UNMATCHED PERFORMANCE
UNMATCHED PERFORMANCE

Exhaust

Bringing the Braaap! Thanks to the KTM 300 EXC HARDENDURO's compact engine design, the header pipe is designed with the target of achieving more ground clearance and reducing the risk of damage​ when riding over​ deep roots​, ruts, or climbing steep rocks. ​The silencer is crafted from lightweight aluminum, saving weight and provides the signature low-down 2-stroke burble for this rock-hopping hero.
UNMATCHED PERFORMANCE
Benchmark lap
HARDENDURO EQUIPMENT
HARDENDURO EQUIPMENT

Top-shelf Componentry

The KTM 300 EXC HARDENDURO models receive the full hard enduro treatment. From the standard-fitted radiator fan to machined anodized triple clam, right down to a solid rear brake disc, with safety wire, each and every element on a HARDENDURO model is specifically chosen for the job at hand.
HARDENDURO EQUIPMENT
On the charge

03. On the charge

BUILT TO BE THE BACKBONE
BUILT TO BE THE BACKBONE

Frame

Specifically engineered for longitudinal rigidity, the 2025 KTM 300 EXC HARDENDURO is engineered around a gloss-orange powder-coated frame providing exceptional rider feedback, energy absorption, and high-speed stability. This is achieved by repositioning the rotating masses in the frame along with a forged steering head connection. The footrest mounts also feature a slim design for less risk of hooking up. And when the ride comes to an end, a forged one-piece side stand ensures your enduro weapon stands proud.

MORE THAN A SUBFRAME
MORE THAN A SUBFRAME

Subframe

An ultra-light lightweight subframe takes charge at the rear of the main frame, featuring a 2-part polyamide and reinforced aluminum construction. With the help of computational dynamics, a specific rigidity was engineered into the subframe, to deliver outstanding handling and rider feedback. This compact subframe design also boasts the the ability to bend and flex in the event of a crash, rather than break, with the subframe fully integrating electronic components, without any extra need for brackets, holders, or unnecessary fixtures.

Handlebars

Held in place by a set of CNC-machine triple clamps, the handlebar on the KTM 300 EXC HARDENDURO features a unique bar pad and soft, grey, ODI lock-on grips for ultimate control. A set of wrap-around handguards provides further protection from unwanted obstacles in your path.

UNFLAPPABLE FRONT END
UNFLAPPABLE FRONT END

WP XACT Closed-cartidge Fork

A 48 mm WP XACT Closed Cartridge spring fork with a basevalve preload adjuster provides fast and consistent damping, with optimized oil flow. This means these forks ensure unmatched performance at every level. Fork protection rings also protect against dirt intrusion. But, best of all, the fork allows for full adjustment of compression and rebound without the need for any tools.

GET THE POWER DOWN
GET THE POWER DOWN

WP XPLOR Shock

Remaining a hallmark of KTM Enduro weaponry, an PDS rear shock concept improves the anti-squat behaviors of the chassis. This remains the most reliable and maintenance-friendly option for competitive enduro racing. Moreover, a lightweight WP XPLOR PDS rear shock takes charge at the rear. For the MY25 the rear shock received updated settings, resulting in improved pressure balance within the shock. With consistent damping, as well as full adjustability thanks to easy-to-use hand clickers for adjustments on the fly, it remains the setup to beat.

WHERE RUBBER MEETS DIRT
WHERE RUBBER MEETS DIRT

Wheels and Tires

The KTM 300 EXC HARDENDURO rolls on a full-factory wheel set made up of high-strength black D.I.D alloy wheels coupled to orange-anodized CNC-machined hubs, black spokes, and orange aluminum nipples. These are wrapped in a set of ultra-grippy Metzeler 6 DAYS Extreme tires providing exceptional traction in all conditions.

STOPPING POWER
STOPPING POWER

Brakes

Slowing the KTM 300 EXC HARDENDURO comes courtesy of a floating front brake disc and solid brake disc on the rear. Not only does the latter provide increased pad life and heat dissipation, its also safety wired directly from the factory. Both ends also get brake protection as standard, with a composite front brake disc guard and orange anodized rear disc guard as standard.

On the charge
BUILT TO BE THE BACKBONE
BUILT TO BE THE BACKBONE

Frame

Specifically engineered for longitudinal rigidity, the 2025 KTM 300 EXC HARDENDURO is engineered around a gloss-orange powder-coated frame providing exceptional rider feedback, energy absorption, and high-speed stability. This is achieved by repositioning the rotating masses in the frame along with a forged steering head connection. The footrest mounts also feature a slim design for less risk of hooking up. And when the ride comes to an end, a forged one-piece side stand ensures your enduro weapon stands proud.
BUILT TO BE THE BACKBONE
On the charge
MORE THAN A SUBFRAME
MORE THAN A SUBFRAME

Subframe

An ultra-light lightweight subframe takes charge at the rear of the main frame, featuring a 2-part polyamide and reinforced aluminum construction. With the help of computational dynamics, a specific rigidity was engineered into the subframe, to deliver outstanding handling and rider feedback. This compact subframe design also boasts the the ability to bend and flex in the event of a crash, rather than break, with the subframe fully integrating electronic components, without any extra need for brackets, holders, or unnecessary fixtures.
MORE THAN A SUBFRAME
On the charge

Handlebars

Held in place by a set of CNC-machine triple clamps, the handlebar on the KTM 300 EXC HARDENDURO features a unique bar pad and soft, grey, ODI lock-on grips for ultimate control. A set of wrap-around handguards provides further protection from unwanted obstacles in your path.
On the charge
UNFLAPPABLE FRONT END
UNFLAPPABLE FRONT END

WP XACT Closed-cartidge Fork

A 48 mm WP XACT Closed Cartridge spring fork with a basevalve preload adjuster provides fast and consistent damping, with optimized oil flow. This means these forks ensure unmatched performance at every level. Fork protection rings also protect against dirt intrusion. But, best of all, the fork allows for full adjustment of compression and rebound without the need for any tools.
UNFLAPPABLE FRONT END
On the charge
GET THE POWER DOWN
GET THE POWER DOWN

WP XPLOR Shock

Remaining a hallmark of KTM Enduro weaponry, an PDS rear shock concept improves the anti-squat behaviors of the chassis. This remains the most reliable and maintenance-friendly option for competitive enduro racing. Moreover, a lightweight WP XPLOR PDS rear shock takes charge at the rear. For the MY25 the rear shock received updated settings, resulting in improved pressure balance within the shock. With consistent damping, as well as full adjustability thanks to easy-to-use hand clickers for adjustments on the fly, it remains the setup to beat.
GET THE POWER DOWN
On the charge
WHERE RUBBER MEETS DIRT
WHERE RUBBER MEETS DIRT

Wheels and Tires

The KTM 300 EXC HARDENDURO rolls on a full-factory wheel set made up of high-strength black D.I.D alloy wheels coupled to orange-anodized CNC-machined hubs, black spokes, and orange aluminum nipples. These are wrapped in a set of ultra-grippy Metzeler 6 DAYS Extreme tires providing exceptional traction in all conditions.
WHERE RUBBER MEETS DIRT
On the charge
STOPPING POWER
STOPPING POWER

Brakes

Slowing the KTM 300 EXC HARDENDURO comes courtesy of a floating front brake disc and solid brake disc on the rear. Not only does the latter provide increased pad life and heat dissipation, its also safety wired directly from the factory. Both ends also get brake protection as standard, with a composite front brake disc guard and orange anodized rear disc guard as standard.
STOPPING POWER
Keeping you going

04. Keeping you going

HOLD THE LINE
HOLD THE LINE

Stability

The 2025 KTM EXC range remains rock-solid at any speed thanks to a repositioned and forged steering head connection and CNC-milled triple clamps. Made from high-grade aluminum, these feature optimally tuned steering stem stiffness, perfect alignment of the fork tubes, and precise geometry of the fork clamps to ensure highly responsive and smooth fork action - not to mention unwavering stability for those ultra-fast flat-out special stages.

SEE INTO THE FUTURE
SEE INTO THE FUTURE

Seat

Swing your leg over the KTM 300 EXC HARDENDURO and you're met with a diamante Facotry seat, wrapped in a back seat cover with transversely stitched ribs, and protected by a water-resistant coating, you can be assured of maximum grip alt all times, with unrestricted freedom of movement when you need it.

SEE INTO THE FUTURE
SEE INTO THE FUTURE

LED headlight

Lighting the way forward, the 2025 KTM EXC range features an LED headlight unit and light mask. The mask itself features triple clamp protection against roost and does away with the rubber mounting straps for improved fitment. Most importantly, the LED lighting unit provides serious illumination, making riding in the dark a completely new experience.

Keeping you going
HOLD THE LINE
HOLD THE LINE

Stability

The 2025 KTM EXC range remains rock-solid at any speed thanks to a repositioned and forged steering head connection and CNC-milled triple clamps. Made from high-grade aluminum, these feature optimally tuned steering stem stiffness, perfect alignment of the fork tubes, and precise geometry of the fork clamps to ensure highly responsive and smooth fork action - not to mention unwavering stability for those ultra-fast flat-out special stages.
HOLD THE LINE
Keeping you going
SEE INTO THE FUTURE
SEE INTO THE FUTURE

Seat

Swing your leg over the KTM 300 EXC HARDENDURO and you're met with a diamante Facotry seat, wrapped in a back seat cover with transversely stitched ribs, and protected by a water-resistant coating, you can be assured of maximum grip alt all times, with unrestricted freedom of movement when you need it.
SEE INTO THE FUTURE
Keeping you going
SEE INTO THE FUTURE
SEE INTO THE FUTURE

LED headlight

Lighting the way forward, the 2025 KTM EXC range features an LED headlight unit and light mask. The mask itself features triple clamp protection against roost and does away with the rubber mounting straps for improved fitment. Most importantly, the LED lighting unit provides serious illumination, making riding in the dark a completely new experience.
SEE INTO THE FUTURE

Technical Details

Engine

  • Primary drive 26:72
  • Transmission 6-speed
  • Secondary gear ratio 14:45
  • Starter Electric starter
  • Stroke 72 mm
  • Bore 72 mm
  • Clutch Wet, DDS multi-disc clutch, Brembo hydraulics
  • Displacement 293.15 cm³
  • EMS Vitesco Technologies EMS
  • Design 1-cylinder, 2-stroke engine
  • Fuel-mixture generation Keihin EFI, throttle body 39 mm

Chassis

  • Weight (without fuel) 106.1 kg
  • Tank capacity (approx.) 9 l
  • Wheelbase 1.489 mm
  • Front brake disc diameter 260 mm
  • Rear brake disc diameter 220 mm
  • Front brake Disc brake
  • Rear brake Disc brake
  • Chain 520 X-Ring
  • Frame design Central double-cradle-type 25CrMo4 steel
  • Front suspension WP XACT-USD, Ø 48 mm
  • Ground clearance 347 mm
  • Handlebar Neken, aluminium Ø 28/22 mm
  • Rear suspension WP XPLOR shock absorber with PDS
  • Seat height 963 mm
  • Silencer Aluminium
  • Steering head angle 63.9 °
  • Rear subframe design Aluminum-reinforced polyamide
  • Suspension travel (front) 300 mm
  • Suspension travel (rear) 310 mm
  • Tyre dimensions (front/rear) 90/90; 140/80
  • Wheels 21 x 1.60"; 18 x 2.15"