Yamaha YZ450FX

Yamaha YZ450FX

Manufacturer	Yamaha Motor Company
Parent company	Yamaha Corporation
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.[1] The YZ450FX features a wide ratio transmission, 18" wheel, electric start and kickstand.[1]

First Generation (2016)

The YZ450FX was introduced in 2016[1] and the first generation continued through 2018. The frame is the same as the YZ450F of that year but with different engine mount brackets.[1]

Second Generation (2019)

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.[2] The kickstarter was removed for this generation and cannot be added.

Third Generation (2021)

Third Generation YZ450FX

Manufacturer	Yamaha
Production	2019-2020
Engine	Titanium 4-value, 450 cc, 97mmx 60.9mm, compression ratio 12.8:1[3]
Transmission	Constant mesh, 5 speed[3]
Frame type	Semi double cradle, aluminum[3]
Suspension	Front: KYB SSS cartridge forks, 12.2 in (310 mm) travel Rear: 12.5 in (318 mm) travel[3]
Brakes	Front: Hydraulic single disc, 270mm Rear: Hydraulic single disc, 245mm[3]
Tires	Front: 80/100-21 51M Rear: 120/100-18 65M[3]
Rake, trail	27.2°, 116 mm (4.6 in)[3]
Wheelbase	1,480 mm (58 in)[3]
Dimensions	L: 2,175 mm (85.6 in)[3] W: 825 mm (32.5 in)[3] H: 1,270 mm (50 in)[3]
Seat height	955 mm (37.6 in)[3]
Weight	116 kg (256 lb)[3] (wet)
Fuel capacity	2.2 US gal (8.3 L; 1.8 imp gal)[3]

The third generation YZ450FX was introduced in 2021 and featured a lighter cylinder head, new camshafts and piston, and a longer connecting rod.[4] It shares the same chassis as the YZ450F.[4]

See also

• Yamaha WR450F
• Yamaha YZ450F

References

1. "2016 Yamaha YZ450FX Dirt Bike".
2. "2019 Yamaha YZ450FX | Cycle World".
3. "Yamaha Owner's Service Manual (2019 YZ450FX)" (PDF).
4. "2021 Yamaha YZ450FX Review | Dirt Rider".