Yamaha YZ490

Name: Yamaha YZ490
Brand: Yamaha

1988-1988 | motocross

Provisional0/19 fields

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Visual reference

Side profile

Seat height: 950 mm
Wheelbase: 1,475 mm
Wet weight: -
Category: motocross

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Asset: Pending
Dimensions: -
License: -
Source: -

Yamaha

YZ490

1988–1988motocross487 ccv2 dev

3D SceneYamaha YZ490

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Rider

Height: 183 cmInseam: 86 cm

Rider position

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Seat fore/aft: 0 mmSeat height delta: 0 mm

Posture

Arm straightness: 95%

Seat position

Feet down

Adjustments

Bar rise: 0 mmBar pullback: 0 mmPeg forward: 0 mmPeg rise: 0 mm

Ergonomics

All contacts reached

Comfortable 95

Knee58.1 deg / Sport

Ideal 75 deg to 105 degL 58.1 deg / R 58.1 deg

Hip93.5 deg / Neutral

Ideal 85 deg to 125 degL 93.5 deg / R 93.5 deg

Elbow143.3 deg / Relaxed

Ideal 110 deg to 170 degL 143.3 deg / R 143.3 deg

Torso lean12.4 deg / Neutral

Ideal -5 deg to 25 deg

Seat height

950 mm

Wheelbase

1475 mm

Weight (wet)

—

Ground clearance

335 mm

Geometry source: cv-estimated. v2 engine: procedural bike, IK rider, live ergonomic scoring. Append ?landmarks=1 to the URL to overlay contact-point gizmos.

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Data provenance

Where these numbers came from

Every populated geometry field records its source, verification state, and source link when available. These records feed both the simulator and the fit recommendation engine.

Provisional0/19 fieldsMethodology

Geometry status: Provisional
Field records: 19
Verified fields: 0/19
Linked sources: 19/19

Category-based provisional contact geometry: 13Published manufacturer/manual spec: 62 source labels

Field-level geometry provenance for Yamaha YZ490
Field	Value	Source	Status	Notes
WheelbaseChassis	1,475 mm	Published manufacturer/manual spec	Provisional	Manually entered from published specs for the live fallback catalog; not independently verified.
Ground clearanceChassis	335 mm	Published manufacturer/manual spec	Provisional	Manually entered from published specs for the live fallback catalog; not independently verified.
Seat contact XRider triangle	738 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Seat contact heightRider triangle	950 mm	Published manufacturer/manual spec	Provisional	Manually entered from published specs for the live fallback catalog; not independently verified.
Seat lengthRider triangle	230 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Handlebar XRider triangle	1,121 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Handlebar heightRider triangle	1,130 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Handlebar widthControls	790 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Foot peg XRider triangle	826 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Foot peg heightRider triangle	585 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Passenger seat XPassenger	605 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Passenger seat heightPassenger	1,005 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Passenger peg XPassenger	693 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Passenger peg heightPassenger	770 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Seat height minimumAdjustability	950 mm	Published manufacturer/manual spec	Provisional	Manually entered from published specs for the live fallback catalog; not independently verified.
Seat height maximumAdjustability	950 mm	Published manufacturer/manual spec	Provisional	Manually entered from published specs for the live fallback catalog; not independently verified.
Dry weightPhysical	103 kg	Published manufacturer/manual spec	Provisional	Manually entered from published specs for the live fallback catalog; not independently verified.
Front wheel diameterRendering	693 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.
Rear wheel diameterRendering	677 mm	Category-based provisional contact geometry	Provisional	Rider contact point estimated from category proportions until side-profile landmarks are authored.

Bike-level reference: https://themotocrossvault.com/wp-content/uploads/2019/01/1988-yamaha-yz80-yz125-yz250-and-yz490-brochure-page-1-converted.pdf#yz490

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