Yamaha YZ450FX

Yamaha YZ450FX

Manufacturer	Yamaha Motor Company
Parent company	Yamaha Corporation
Production	Since 2016
Class	Enduro
Engine	Single-cylinder, DOHC, Multivalve, water-cooled, four-stroke
Transmission	5-speed, wet clutch, chain drive
Suspension	Front: Kayaba inverted fork; fully adjustable Rear: single shock; fully adjustable
Brakes	Hydraulic single disc brakes
Tires	Front: 21 in (530 mm) Rear:18 in (460 mm)

The Yamaha YZ450FX is an off-road performance motorcycle made by Yamaha Motor Company. It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 2016 at 450cc, it shared many components and design concepts with both the Yamaha WR450F and Yamaha YZ450F motocross model. The 2016 model premiered as a closed-course, competition GNCC/Woods racer. The YZ450FX features a wide ratio transmission, 18″ wheel, electric start and kickstand.

The YZ450FX was introduced in 2016 and the first generation continued through 2018. The frame is the same as the YZ450F of that year but with different engine mount brackets.

The second generation YZ450FX was introduced in 2019 and featured an all new engine, updated suspension settings, revised chassis, and a wireless, smartphone based engine tuning app. The kickstarter was removed for this generation and cannot be added.

Third Generation YZ450FX

Manufacturer	Yamaha
Production	2019-2020
Engine	Titanium 4-value, 450 cc, 97mmx 60.9mm, compression ratio 12.8:1
Transmission	Constant mesh, 5 speed
Frame type	Semi double cradle, aluminum
Suspension	Front: KYB SSS cartridge forks, 12.2 in (310 mm) travel Rear: 12.5 in (318 mm) travel
Brakes	Front: Hydraulic single disc, 270mm Rear: Hydraulic single disc, 245mm
Tires	Front: 80/100-21 51M Rear: 120/100-18 65M
Rake, trail	27.2°, 116 mm (4.6 in)
Wheelbase	1,480 mm (58 in)
Dimensions	L: 2,175 mm (85.6 in) W: 825 mm (32.5 in) H: 1,270 mm (50 in)
Seat height	955 mm (37.6 in)
Weight	116 kg (256 lb) (wet)
Fuel capacity	2.2 US gal (8.3 L; 1.8 imp gal)

The third generation YZ450FX was introduced in 2021 and featured a lighter cylinder head, new camshafts and piston, and a longer connecting rod. It shares the same chassis as the YZ450F.

• Yamaha WR450F
• Yamaha YZ450F