Yamaha YZ450FX
ManufacturerYamaha Motor Company
Parent companyYamaha Corporation
ClassEnduro
EngineSingle-cylinder, DOHC, Multivalve, water-cooled, four-stroke
Transmission5-speed, wet clutch, chain drive
SuspensionFront: Kayaba inverted fork; fully adjustable
Rear: single shock; fully adjustable
BrakesHydraulic single disc brakes
TiresFront: 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)

Third Generation YZ450FX
ManufacturerYamaha
Production2019-2020
EngineTitanium 4-value, 450 cc, 97mmx 60.9mm, compression ratio 12.8:1[2]
TransmissionConstant mesh, 5 speed[2]
Frame typeSemi double cradle, aluminum[2]
SuspensionFront: KYB SSS cartridge forks, 12.2 in (310 mm) travel
Rear: 12.5 in (318 mm) travel[2]
BrakesFront: Hydraulic single disc, 270mm
Rear: Hydraulic single disc, 245mm[2]
TiresFront: 80/100-21 51M
Rear: 120/100-18 65M[2]
Rake, trail27.2°, 116 mm (4.6 in)[2]
Wheelbase1,480 mm (58 in)[2]
DimensionsL: 2,175 mm (85.6 in)[2]
W: 825 mm (32.5 in)[2]
H: 1,270 mm (50 in)[2]
Seat height955 mm (37.6 in)[2]
Weight116 kg (256 lb)[2] (wet)
Fuel capacity2.2 US gal (8.3 L; 1.8 imp gal)[2]

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

Third Generation (2021)

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

References

  1. 1 2 3 4 "2016 Yamaha YZ450FX Dirt Bike".
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 "Yamaha Owner's Service Manual (2019 YZ450FX)" (PDF).
  3. ↑ "2019 Yamaha YZ450FX | Cycle World".
  4. 1 2 "2021 Yamaha YZ450FX Review | Dirt Rider".


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