KTM 450 SX-F Specs

2013 - 2023 • 5 variants

KTM has built the 450 SX-F, a motocross bike, across 5 variants since 2013, most recently updated for 2023. Under the tank sits a cam levers, drive via helical gear pair and tooth-wheel chain, 449.3 cc in capacity. Torque tops out at 9.2 Nm.

About the KTM 450 SX-F

KTM introduced the 450 SX-F as part of their Cross / motocross range, with production running from 2007 to 2023. This technical reference page documents the full specification sheet for the KTM 450 SX-F, including engine displacement, power and torque figures, frame and suspension geometry, braking systems, and overall dimensions. Select a model year above to view year-specific technical data. Specifications are compiled from official manufacturer sources.

KTM 450 SX-F by Year

2023 KTM 450 SX-F View specs →

2022 KTM 450 SX-F View specs →

2021 KTM 450 SX-F View specs →

2016 KTM 450 SX-F View specs →

2013 KTM 450 SX-F View specs →

Spec Evolution

How key specs changed across production years.

Specification	2007	2008	2009	2010	2011	2012	2013	2015	2016	2017	2018	2019	2020	2021	2022	2023
Bore x Stroke (in,)	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.7 x 2.5 inches ↓	3.7 x 2.5 inches	3.7 x 2.5 inches	3.7 x 2.5 inches	3.7 x 2.5 inches	3.7 x 2.5 inches	3.7 x 2.5 inches	3.7 x 2.5 inches	3.7 x 2.5 inches	3.7 x 2.5 inches
Bore x Stroke (mm)	97.0 x 60.8 mm	97.0 x 60.8 mm	97.0 x 60.8 mm	97.0 x 60.8 mm	97.0 x 60.8 mm	97.0 x 60.8 mm	95.0 x 63.4 mm ↓	95.0 x 63.4 mm	95.0 x 63.4 mm	95.0 x 63.4 mm	95.0 x 63.4 mm	95.0 x 63.4 mm	95.0 x 63.4 mm	95.0 x 63.4 mm	95.0 x 63.4 mm	95.0 x 63.4 mm
Brakes - Front Diameter (in.)	-	10.2 inches	10.2 inches	-	10.2 inches	10.2 inches	8.7 inches ↓	10.2 inches ↑	10.2 inches	10.2 inches	10.2 inches	-	-	-	-
Brakes - Front Diameter (mm)	-	260 mm	260 mm	-	260 mm	260 mm	220 mm ↓	260 mm ↑	260 mm	260 mm	260 mm	-	-	-	-
Brakes - Rear Diameter (in.)	-	8.7 inches	8.7 inches	-	8.7 inches	8.7 inches	8.3 inches ↓	8.7 inches ↑	8.7 inches	8.7 inches	8.7 inches	-	-	-	-
Brakes - Rear Diameter (mm)	-	220 mm	220 mm	-	220 mm	220 mm	210 mm ↓	220 mm ↑	220 mm	220 mm	220 mm	-	-	-	-
Comments	-	-	-	-	With reverse. German brand.	-	-	-	-	-	-	-	-	-	-
Displacement (cc)	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.30 cc	449.3 cc	449.3 cc	449.3 cc	449.3 cc	449.9 cc ↑
Displacement (ci)	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.42 cubic inches	27.45 cubic inches ↑
Engine Type	Single cylinder	Single cylinder	Single cylinder	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke
Fuel Control	OHC	DOHC	DOHC	DOHC	DOHC	DOHC	Single Overhead Cams (SOHC)	-	Single Overhead Cams (SOHC)	Single Overhead Cams (SOHC)	Single Overhead Cams (SOHC)	Single Overhead Cams (SOHC)	Single Overhead Cams (SOHC)	Single Overhead Cams (SOHC)	Single Overhead Cams (SOHC)	Single Overhead Cams (SOHC)
Ground Clearance (in.)	15.0 inches	15.0 inches	15.0 inches	15.0 inches	14.6 inches ↓	14.6 inches	14.8 inches ↑	14.8 inches	14.6 inches ↓	14.6 inches	14.6 inches	14.6 inches	14.6 inches	14.6 inches	14.8 inches ↑	13.5 inches ↓
Ground Clearance (mm)	380 mm	380 mm	380 mm	380 mm	371 mm ↓	371 mm	375 mm ↑	375 mm	370 mm ↓	370 mm	370 mm	370 mm	370 mm	370 mm	375 mm ↑	343 mm ↓
Stroke	4	4	4	-	-	-	-	-	-	-	-	-	-	-	-	4-stroke
Frame Type	Central double-cradle-type 25 CrMo4	Central double-cradle-type 25 CrMo4	Central double-cradle-type 25 CrMo4. Aluminium subframe.	Central double-cradle-type 25CrMo4	Central double-cradle-type 25CrMo4. Aluminium subframe.	Central tube frame made of chrome molybdenum steel tubing	Central tubular frame made from chrome molybdenum steel tubes	Central tubular frame made from chrome molybdenum steel tubes	25CrMo4 steel central-tube frame	25CrMo4 steel central-tube frame	25CrMo4 steel central-tube frame	25CrMo4 steel central-tube frame	25CrMo4 steel central-tube frame	25CrMo4 steel central-tube	25CrMo4 steel central-tube	Central double-cradle-type 25CrMo4 steel
Dry Weight	104 kg / 229.3 lbs	104.6 kg / 230.6 lbs ↑	104.6 kg / 230.6 lbs	104.6 kg / 230.6 lbs	106.9 kg / 235.7 lbs ↑	107.8 kg / 237.7 lbs ↑	106.2 kg / 234.1 lbs ↓	105.5 kg / 232.6 lbs ↓	100.4 kg / 221.3 lbs ↓	100.2 kg / 220.9 lbs ↓	100.2 kg / 220.9 lbs	100 kg / 220.5 lbs ↓	100 kg / 220.5 lbs	100 kg / 220.5 lbs	100.5 kg / 221.6 lbs ↑	102.6 kg / 226.2 lbs ↑
Seat Height	925 mm / 36.4 in.	960 mm / 37.8 in. ↑	985 mm / 38.8 in. ↑	985 mm / 38.8 in.	992 mm / 39.1 in. ↑	992 mm / 39.1 in.	992 mm / 39.1 in.	992 mm / 39.1 in.	960 mm / 37.8 in. ↓	960 mm / 37.8 in.	960 mm / 37.8 in.	960 mm / 37.8 in.	950 mm / 37.4 in. ↓	950 mm / 37.4 in.	950 mm / 37.4 in.	958 mm / 37.7 in. ↑
Brakes - Front	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc. Four-piston calipers.	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings
Wheelbase	1,475 mm / 58.1 in.	1,475 mm / 58.1 in.	1,475 mm / 58.1 in.	1,475 mm / 58.1 in.	1,495 mm / 58.9 in. ↑	1,495 mm / 58.9 in.	1,495 mm / 58.9 in.	1,495 mm / 58.9 in.	1,485 mm / 58.5 in. ↓	1,485 mm / 58.5 in.	1,485 mm / 58.5 in.	1485 mm / 58.5 in. ↑	1485 mm / 58.5 in.	1485 mm / 58.5 in.	1485 mm / 58.5 in.	1485 mm / 58.5 in.
Engine Detail	-	-	-	-	-	Cam levers, drive via helical gear pair and tooth-wheel chain	-	-	-	-	-	-	-	-	-
Fuel Capacity	8.00 litres / 2.11 gallons	8.20 litres / 2.17 gallons ↑	8.00 litres / 2.11 gallons ↓	8.00 litres / 2.11 gallons	7.50 litres / 1.98 gallons ↓	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.50 litres / 1.98 gallons	7.00 litres / 1.85 gallons ↓	7.00 litres / 1.85 gallons	7.00 litres / 1.85 gallons	7.00 litres / 1.85 US gallons	7.00 litres / 1.85 US gallons	7.00 litres / 1.85 US gallons	7.50 litres / 1.98 US gallons ↑	7.20 litres / 1.90 US gallons ↓
Brakes - Rear	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc	Single disc. Two-piston calipers.	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings	Single disc. Brake calipers on floating bearings
Suspension - Front	WP USD	WP USD	WP USD	WP-USD fork	WP-USD fork	WPSuspension Up Side Down 4860 MXMA CC	WP ?Suspension Up Side Down 4860 MXMA CC	WP ?Suspension Up Side Down 4860 MXMA CC	WP-USD, AER 48, ? 48 mm ↓	WP-USD, AER 48, ? 48 mm	WP-USD, AER 48, ? 48 mm	WP-USD, AER 48, Ø 48 mm	WP XACT-USD, Ø 48 mm	WP XACT-USD, Ø 48 mm	WP XACT-USD, Ø 48 mm	WP XACT-USD, Ø 48 mm
Suspension - Rear	WP Monoshock PDS	WP Monoshock PDS	WP PDS shock absorber	WP PDS shock absorber	WP PDS shock absorber	WPSuspension 5018 BAVP DCC	WP ?Suspension 5018 BAVP DCC	WP ?Suspension 5018 BAVP DCC	WP shock absorber with linkage	WP shock absorber with linkage	WP shock absorber with linkage	WP shock absorber with linkage	WP XACT Monoshock with linkage	WP XACT Monoshock with linkage	WP XACT Monoshock with linkage	WP XACT Monoshock with linkage
Fuel System	Carburettor. Keihin MX FCR 41	Carburettor. Keihin MX FCR 41	Carburettor. Keihin MX FCR 41	Carburettor. Keihin FCR MX 41	Carburettor. Keihin FCR MX 41	Carburettor. Keihin MX FCR 41	Carburettor	-	-	Injection	Injection	Injection	Injection	Injection	Injection	Injection
Colours	-	-	Orange	Orange	Orange	Orange/black/white	Orange/black	Orange/black	Orange/black	Orange/white/black	Orange/white/black	Orange/white/black	Orange/white/black	Orange/white/black	Orange/white/blue	Orange/white/grey
Clutch	Wet multi-disc clutch, operated hydraulically	Wet multi-disc clutch, operated hydraulically	Wet multi-disc clutch, operated hydraulically	Wet mDouble disk clutch, operated hydraulically	Wet mDouble disk clutch, operated hydraulically	Wet mDouble disk clutch / hydraulically operated	Multidisc clutch in oil bath/hydraulically activated	DDS Multidisc clutch in oil bath/hydraulically activated	Wet, DDS multi-disc clutch, Brembo hydraulics	Wet, DDS multi-disc clutch, Brembo hydraulics	Wet, DDS multi-disc clutch, Brembo hydraulics	Wet, DDS multi-disc clutch, Brembo hydraulics	Wet, DDS multi-disc clutch, Brembo hydraulics	Wet, DDS multi-disc clutch, Brembo hydraulics	Wet, DDS multi-disc clutch, Brembo hydraulics	Wet, DDS multi-disc clutch, Brembo hydraulics
Final Drive	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain	Chain (final drive)	Chain (final drive)	Chain (final drive)	Chain (final drive)	Chain (final drive)
Length	-	-	-	-	1,400 mm / 55.1 in.	-	2,090 mm / 82.3 in.	-	-	-	-	-	-	-	-	-
Compression Ratio	12.5:1	12.5:1	12.5:1	12.5:1	12.5:1	12.5:1	10.6:1 ↓	-	-	-	-	-	-	-	-
Emissions	-	-	-	-	Euro 2	-	-	-	-	-	-	-	-	-	-
Tyres - Front	80/100-21	80/100-21	80/100-21	80/100-21	80/100-21	20/7-10 ↓	100/80-17 ↑	-	-	-	-	-	-	-	-	1.6-21
Engine Lubrication	Pressure lubrication	Pressure lubrication	Pressure lubrication	Pressure lubrication with 3 oil pumps	Pressure lubrication with 3 oil pumps	Forced oil lubrication with 3 Eaton pumps	Pressure circulation lubrication with two Eaton pumps	Pressure circulation lubrication with two Eaton pumps	Pressure circulation lubrication with two Eaton pumps	-	-	-	-	-	-
Gearbox	4-speed	4-speed	4-speed	5-speed ↑	5-speed	5-speed	4-speed ↓	4-speed	4-speed	4-speed	4-speed	4-speed	4-speed	4-speed	5-speed ↑	5-speed
Width	-	-	-	-	960 mm / 37.8 in.	-	830 mm / 32.7 in.	-	-	-	-	-	-	-	-	-
Tyres - Rear	110/90-19	110/90-19	110/90-19	110/90-19	110/90-19	110/90-19	110/80-17	-	-	-	-	-	-	-	-
Primary Drive	-	-	-	-	CVT with rear gear	14:52. Primary 29:74.	5/8 x 1/4 ↓	5/8 x 1/4	5/8 x 1/4	5/8 x 1/4	5/8 x 1/4	5/8 x 1/4	5/8 x 1/4	5/8 x 1/4	5/8 x 1/4 chain	X-ring 5/8 x 1/4 chain
Rake	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.5°	26.1° ↓	26.1°	26.1°
Exhaust	Aluminium	Aluminium	Aluminium	Aluminium	Aluminium	-	-	-	-	-	-	-	-	-	-
Wheel Travel - Front	115 mm / 4.5 in.	300 mm / 11.8 in. ↑	300 mm / 11.8 in.	300 mm / 11.8 in.	300 mm / 11.8 in.	244 mm / 9.6 in. ↓	205 mm / 8.1 in. ↓	300 mm / 11.8 in. ↑	300 mm / 11.8 in.	300 mm / 11.8 in.	300 mm / 11.8 in.	300 mm / 11.8 in.	300 mm / 11.8 in.	310 mm / 12.2 in. ↑	310 mm / 12.2 in.	310 mm / 12.2 in.
Wheel Travel - Rear	185 mm / 7.3 in.	335 mm / 13.2 in. ↑	335 mm / 13.2 in.	335 mm / 13.2 in.	330 mm / 13.0 in. ↓	258 mm / 10.2 in. ↓	185 mm / 7.3 in. ↓	317 mm / 12.5 in. ↑	300 mm / 11.8 in. ↓	300 mm / 11.8 in.	300 mm / 11.8 in.	310 mm / 12.2 in. ↑	310 mm / 12.2 in.	300 mm / 11.8 in. ↓	300 mm / 11.8 in.	300 mm / 11.8 in.
Ignition	Kokusan digital DC-CDI	Kokusan digital DC-CDI	Kokusan digital DC-CDI	Kokusan	-	Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment	Contactless controlled fully electronic ignition with digital ignition adjustment	Contactless controlled fully electronic ignition with digital ignition adjustment	Contactless controlled fully electronic ignition with digital ignition adjustment	Keihin EMS	Keihin EMS	Keihin EMS	Keihin EMS	Keihin EMS	Keihin EMS	Keihin EMS
Max Torque	-	-	-	-	-	-	9.20 Nm (0.9 kgf-m or 6.8 ft.lbs) @ 7000 Revolutions	-	-	-	-	-	-	-	-
Power-to-Weight Ratio	-	-	-	-	-	-	0.0815 HP/kg	-	-	-	-	-	0.6300 HP/kg	0.6300 HP/kg	0.6269 HP/kg	0.6140 HP/kg ↓
Starter	Kick	Kick	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric	Electric
Valve System	4	4	4	4	4	4	2 ↓	-	-	-	-	-	-	-	-

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