2023 KTM 450 EXC-F: PUNCHING ABOVE ITS WEIGHT.
Introducing the 2023 KTM 450 EXC-F…
What might be the smallest engine in the KTM 4-stroke range, the 2023 KTM 250 EXC-F packs a surprising punch. With its compact dimensions, minimal weight, and fantastic handling, the KTM 250 EXC-F has long been a favorite for motivated amateurs and ambitious pros alike. Thanks to its advanced fuel injection system, this powerplant also offers class-leading performance, low-down torque, and confidence-building power delivery.
2023 KTM 450 EXC-F Totalmotorcycle.com Key Features
TOTAL TERRAIN DOMINATION: INTRODUCING THE 2023 KTM ENDURO RANGE
KTM has dominated Enduro competition for a number of decades, with the newest iteration of the 2023 KTM EXC and EXC-F models set to continue the trend. Boasting an updated design, orange-coated Chromoly steel frame, race-proven WP XPLOR suspension at each end, and real READY TO RACE credentials, the 2023 KTM Enduro range is the one to beat.
Offering the most extensive READY TO RACE competition Enduro lineup on the market, starting with the enduro underdog KTM 150 EXC 2-Stroke and topping out with the class-leading power KTM 500 EXC-F 4-Stroke, the 2023 KTM Enduro range caters to all riders and terrains.
New for 2023, an all-new graphic design and white, purple and orange color scheme come together into a seamlessly blended palette. This color scheme was specifically chosen by the designers to pay homage to the early ‘90s enduro models, setting the 2023 KTM Enduro range apart from anything else on the trails.
The looks are further emphasized with the use of a race-inspired orange-coated Chromoly steel frame. Not only does this echo the styling on full-factory race machines but provides the perfect backbone to set off the 2023 graphics pack.
In terms of engines, the 2-Stroke model range once again takes its place and is the leader in the paddock, making use of KTM’s patented Transfer Port Injection (TPI) technology. Not only has this ensured fewer emissions and fuel consumption but provides smooth and strong power delivery from the bottom right through to the top end of the rev-range.
The 4-Stroke model range provides the most concise offering of models, starting with the KTM 250 EXC-F and KTM 350 EXC-F and topping out with the powerhouses KTM 450 EXC-F and KTM 500 EXC-F. All models in the 4-Stroke range benefit from class-winning engines, engineered to deliver massive torque down low with class-leading power delivery at higher RPMs.
These are flanked by the ever-popular KTM EXC SIX DAYS range, which offers a special tribute to the upcoming 2022 FIM International Six Days Enduro in France, combining the very latest in innovation with an extensive list of race-derived parts as standard.
Every motorcycle in the range gets fully adjustable WP XPLOR suspension as standard, with the advantage of a Progressive Damping System (PDS) on the rear. The PDS layout – a staple across KTM EXC and EXC-F models, offers lower maintenance due to fewer moving parts, but provides more ground clearance, with less chance of hooking up when climbing logs or rocks.
As always, and thanks to KTM’s global network of dealers, the availability of support and parts needed to compete at the highest level are easily accessible, with the added availability of dedicated KTM PowerWear and KTM PowerParts designed to allow for the highest levels of performance, protection, and mobility for all offroad riders and racers.
The 2023 KTM Enduro range is derived from years at the top level of offroad racing and brings together a dynamic combination of race-bred performance, ergonomics, and technology ready to tackle any terrain.
2023 KTM 450 EXC-F Totalmotorcycle.com Features and Benefits
Engine & Exhaust Exhaust
When it comes to power delivery and performance, the exhaust plays a key role and packs a punch that is hard to beat. All 4-stroke EXC models feature two-piece header pipes which can be disassembled easily and allow easy access to the shock. The aluminum muffler sleeve has a short and compact profile, bringing the weight closer to the center of gravity for better mass centralization.
Engine
Compact dimensions with class-leading power output, the KTM 250 EXC-F’s fuel-injected DOHC engine is the most powerful and refined 250 cc on the market. Its efficient power delivery is available throughout the entire rev range and with its low weight of only 27.9 kg, this engine is the lightest and most competitive powerplant out there. With Euro IV homologation, it’s not only considerately green, but leaves the competition green with envy too.
Cylinder head
The KTM 250 EXC-F engine is fitted with a compact DOHC cylinder head for optimal mass centralization while contributing to even better handling. The head configuration, with double overhead camshafts controlling the gas flow through the ports, promises outstanding, enduro-specific engine characteristics. The DLC coated finger followers, as well as the lightweight titanium valves they actuate (intake 32.5mm, exhaust 26.5mm), allow for higher engine speeds, a crucial factor in the 250’s class-leading performance.
Crankshaft
The KTM 250 EXC-F’s crankshaft is located in an ideal position close to the center of gravity, contributing to easier handling. It utilizes a short connecting rod, which makes for an overall compact and lightweight engine with a snappy power delivery. A plain big (bottom) end bearing with two force-fitted bearing shells runs directly on the crank pin. The engine’s pressurized lubrication system provides the necessary oil feed for this bearing. This design has a direct benefit for the crankshaft with extended service intervals, which are lengthened due to the plain bearing. So just pin it, all day long.
Crankcases and engine covers
The compact engine cases are manufactured using a high pressure die-cast production process which helps with weight reduction, while retaining strength and durability. The design allows for a very centralized shaft configuration, making the engine very short and compact, while contributing to an efficient centralization of mass. Additionally, the engine covers feature a smart surface structure which reduces wear caused by the rider’s boots, keeping them looking as fresh as the day you bought it.
Transmission
The KTM 250 EXC-F features a robust 6-speed transmission made by PANKL Racing Systems. The gears are made of a strong, forged raw material, ensuring the highest durability and reliability level. There was no need to change the gear ratios that are perfectly matched to the power characteristics of the engine. All four-stroke engines are fitted with a gear sensor, giving the option of different engine characteristics for each gear.
Engine management system
The state-of-the-art Keihin Engine Management System, with electronic fuel injection, features a 42 mm throttle body with separate systems for cold starting and idle adjustment. The throttle cable mount allows for easy access and a smooth routing of the cables. The ECU features selectable engine maps which are optimized to the exhaust, airbox and engine configuration, regulating the unique traction control and are activated by the handlebar map-select switch. It also provides different maps for each gear, according to the information received from the gear sensor, ensuring maximum power as you shift through the gears.
Cylinder and piston
Inside the short 78 mm bore cylinder, is an extremely lightweight, forged bridged box-type piston made by CP. The piston features a unique crown shape that has been adapted to the combustion chamber. Despite its incredibly low weight, it has an extra rigid structure for enhanced durability. Thanks to its lightweight construction, the oscillating masses are low, giving the engine extremely lively characteristics. The compression ratio of 13.8:1 delivers an exceptional engine performance and reduces the risk of engine knocking.
Balancer shaft
The multifunctional side-mounted counter balance shaft masterfully balances all the oscillating forces, while also driving the water pump. It effectively keeps engine vibrations to a minimum, resulting in the smoothest ride even at the highest engine speeds.
Clutch
The KTM 250 EXC-F is fitted with the extremely durable, KTM-developed DS clutch (diaphragm steel), with a wear-free steel basket and heat resistant clutch plates. It uses a diaphragm spring instead of the usual coil springs, which results in considerably easier clutch action. Additionally, the Brembo hydraulic system provides easy and precise clutch modulation throughout the entire operating temperature range.
E-Starter
The standard electric starter on the KTM 250 EXC-F uses a proven starter drive and a strong starter motor made by Mitsuba. As demonstrated time and time again, it provides quick and reliable starting, saving you precious time and energy when you need it most.
Cooling
Maintaining the optimal engine temperature is crucial to ensuring consistent horsepower throughout the ride. The KTM 250 EXC-F features radiators which are mounted close to the center of gravity and match the design of the shrouds perfectly, in order to achieve perfect ergonomics. By using CFD technology (Computational Fluid Dynamics) and a smart coolant circuit routing, the innovative system ensures optimum engine temperature for the highest performance, in all conditions. Above all, the delta distributor, integrated into the frame triangle, features a large center tube, making the coolant flow from the cylinder head to the radiators highly efficient. The radiators have special protectors that protect from flying rocks and debris while also acting as a brace to disperse energy around the radiators in the event of an impact.
Exhaust
When it comes to power delivery and performance, the exhaust plays a key role and packs a punch that is hard to beat. All 4-stroke EXC models feature two-piece header pipes which can be disassembled easily and allow easy access to the shock. The aluminum muffler sleeve has a short and compact profile, bringing the weight closer to the center of gravity for better mass centralization.
Engine
Compact dimensions with class-leading power output, the KTM 250 EXC-F’s fuel-injected DOHC engine is the most powerful and refined 250 cc on the market. Its efficient power delivery is available throughout the entire rev range and with its low weight of only 27.9 kg, this engine is the lightest and most competitive powerplant out there. With Euro IV homologation, it’s not only considerately green, but leaves the competition green with envy too.
Chassis Airbox
The airbox on the KTM 250 EXC-F ensures optimal flow dynamics, and together with the intake snorkels, results in optimal power and throttle response. Despite the obvious performance enhancements, the design also offers maximum protection against soiling of the air filter. The large Twin-Air air filter is mounted on a cleverly designed stiff cage that minimizes incorrect installation. As found on previous models, filter maintenance is quick and easy and does not require tools – a standard, original feature from KTM.
Frame
All KTM EXC models feature high-tech, lightweight Chromoly steel frames with race-derived geometry, optimal stiffness, and unparalleled feedback for the rider. This translates into a playful handling character, with remarkable stability at speed – not to mention FACTORY RACING style thanks to the striking orange coating. The subframe is made of extra-light and ultra-stable aluminum profiles, weighing less than 900 grams providing rear fender stability and durability in the event of a loop out.
Swingarm
The KTM 250 EXC-F features a one-piece aluminum swingarm, which is manufactured using a gravity die-cast production process. This results in exceptional strength at the lowest possible weight and the perfect flex behavior.
Wheels
KTM uses lightweight, CNC-machined hubs and high-end GIANT rims on all EXC models. These guarantee maximum stability and the bare minimum weight, while aluminum spoke nipples feature an innovative design, which reduces the need to continuously tighten the spokes.
Tires
Race-specification, puncture-resistant MAXXIS MaxxEnduro are designed for all-day riding comfort, with extreme grip and performance across any terrain.
Suspension
For 2023, all KTM EXC-F models feature top-shelf WP suspension systems, focused on providing all riders of all levels with unmatched performance and consistency across all terrain types.
Front suspension
Leading the way in enduro-focused suspension, these adjustable 48 mm diameter WP XPLOR upside-down forks provide unmatched performance from both expert and amateur riders alike. Adjustability also comes easily, with compression damping dialed in on the left fork, with rebound on the right.
Rear suspension
The race-proven and fully adjustable WP XPLOR shock absorber features conical bushings between the pistons that allow for reduced suspension fade and wear. And, not only this PDS rear suspension design the of choice of champions in the quest for podiums, but it also leads the way when it comes to providing maximum traction for the rear wheel.
Triple clamp
The EXC-Fs are fitted with forged triple clamps with an offset of 22mm, ensuring a solid grip of the fork and precise handling. The handlebar is adjustable forwards and backwards over 4 positions, so the EXC-F will fit you like your favorite gloves.
Brakes
These high-tech Brembo babies are combined with lightweight Wave brake discs. You couldn’t brake any harder or with better feel on an offroad motorcycle.
Fuel tank
All models in the EXC range are fitted with lightweight polyethylene tanks improving the ergonomics. The ¼‐turn bayonet filler cap makes for quick and easy closure. Manufactured using see‐through plastic, you will always be able to see how much fuel remains at a glance. It is fitted with an integrated fuel pump system and a fuel level sensor. Additionally, the fuel line features a 90° connector to the tank for better protection against damage.
Airbox
The airbox on the KTM 250 EXC-F ensures optimal flow dynamics, and together with the intake snorkels, results in optimal power and throttle response. Despite the obvious performance enhancements, the design also offers maximum protection against soiling of the air filter. The large Twin-Air air filter is mounted on a cleverly designed stiff cage that minimizes incorrect installation. As found on previous models, filter maintenance is quick and easy and does not require tools – a standard, original feature from KTM.
Frame
All KTM EXC models feature high-tech, lightweight Chromoly steel frames with race-derived geometry, optimal stiffness, and unparalleled feedback for the rider. This translates into a playful handling character, with remarkable stability at speed – not to mention FACTORY RACING style thanks to the striking orange coating. The subframe is made of extra-light and ultra-stable aluminum profiles, weighing less than 900 grams providing rear fender stability and durability in the event of a loop out.
Ergonomics & Comfort Seat
Go ahead, take a seat. The 2023 KTM 250 EXC-F’s seat is covered in grippy black vinyl, and is perfectly shaped to allow riders complete freedom of movement, but comfortable enough to maintain longer sessions in the saddle.
Handlebar
All KTM EXC models are equipped with adjustable, high-strength aluminum tapered handlebars made by NEKEN. These can be mounted in four different positions. Standard with ODI vulcanized grip on the right side and a comfortable ODI lock-on grip on the left, your only worry is hanging on, and letting rip.
Footpegs
Self-cleaning footpegs prevent mud from clogging up the pegs, even when dragging them through deep ruts. This means your boots maintain their grip, and you maintain your focus on the trail.
Seat
Go ahead, take a seat. The 2023 KTM 250 EXC-F’s seat is covered in grippy black vinyl, and is perfectly shaped to allow riders complete freedom of movement, but comfortable enough to maintain longer sessions in the saddle.
Handlebar
All KTM EXC models are equipped with adjustable, high-strength aluminum tapered handlebars made by NEKEN. These can be mounted in four different positions. Standard with ODI vulcanized grip on the right side and a comfortable ODI lock-on grip on the left, your only worry is hanging on, and letting rip.
Bodywork & Graphics Decals
Drawing inspiration from the RED BULL KTM FACTORY RACING TEAM, the 2023 KTM EXC-F range features an orange-coasted frame and boasts a bold 90s inspired color scheme, using the tried and tested in-mold graphics application for greater friction and fade resistance, meaning your steed will look factory-fresh after even the toughest time spent on the trails.
Software & Electronics Battery & wiring harness
All engines are fitted with the proven electric starter, which is a major benefit for any offroad activity. It is powered by a super lightweight 2 Ah lithium-ion starter battery, which provides safe, reliable starting. A reworked wiring harness and revised packaging has most of the electrical components carefully positioned into a common area below the seat, making them more accessible and reliable.
2023 KTM 450 EXC-F – Totalmotorcycle.com International Specifications/Technical Details
US MSRP Price: $ See Dealer USD
Canada MSRP Price: $ See Dealer CDN
Europe/UK MSRP Price: £ See Dealer (On The Road inc 20% Vat)
Engine
Transmission 6-speed
Starter Electric starter
Stroke 52.3mm
Bore 78mm
Clutch Wet, DDS multi-disc clutch, Brembo hydraulics
Displacement 249.91cm³
EMS Keihin EMS
Design 1-cylinder, 4-stroke engine
Chassis
Weight (without fuel) 103kg
Tank capacity (approx.) 9l
Front brake disc diameter 260mm
Rear brake disc diameter 220mm
Front brake Disc brake
Rear brake Disc brake
Chain X-Ring 5/8 x 1/4″
Frame design Central double-cradle-type 25CrMo4 steel
Front suspension WP XPLOR-USD, Ø 48 mm
Ground clearance 355mm
Rear suspension WP Xplor PDS shock absorber
Seat height 960mm
Steering head angle 63.5°
Suspension travel (front) 300mm
Suspension travel (rear) 310mm
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).
