Suspension Parts for YAMAHA YZ400F 1998 – Shocks, Forks & Upgrades

Discover suspension parts guaranteed to fit the 1998 YAMAHA YZ400F. Every product in this category has been validated against year-specific fork and shock specifications to ensure true compatibility.
You’ll find fork components, shock parts, shims, upgrade kits, complete suspension systems, chassis components, and the tools and fluids required for accurate servicing - all aligned with the suspension setup of the 1998 YAMAHA YZ400F.

Use this page as a reliable reference when maintaining, rebuilding, or upgrading your bike’s suspension.

Bike-Specific Suspension Specifications & Setup Information

CALCULATE SPRING RATES

Rider Weight

This is a recommendation only please consult your manual

Ideal Fork Rate:
kg/mm ( N/mm)
Ideal Shock Rate:
kg/mm ( N/mm)

BIKE DETAILS

Stock Fork Spring Rate

0.46

Stock Shock Spring Rate

5.4

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

4 Stroke Engine 400 cc

FORKS INFO

Fork Manufacturer

KYB USD 46 mm OD

Fork Dimensions

Compression Nut Torque
48 in-lb (0.56 kgf-m)

Fork Features

Twin Chamber Fork
No

Fork Oil

Fork Oil Weight
SAE 5
Fork Oil Level
110 mm
Oil Quanity
2 Litres

Fork Spring Information

Spring Rate – Claimed
0.46
Standard Preload
10 mm

SHOCKS INFO

Shock Manufacturer

KYB
46 mm ID

Shock Dimensions

Nitrogen Pressure
142 psi
Shock Length (Eye to Eye)
470 mm
Shock Travel
133 mm
Shock Shaft Outer Diameter
16 mm
Standard Sag
103 mm
Shaft Nut Torque
25 ft-lbs (34 NM)
Shock Oil
2.5 Weight
Standard Preload
8

Shock Features

Non-rebuildable
No

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All Fitment-Matched Suspension Parts

Browse All 62 Products for YAMAHA YZ400F 1998
HiCalibre

HiCalibre Fork Springs 41.2 x 460 (Eibach 981) Yamaha YZ125/250/400/426 1996-2003

Proudly made in the USA
(SKU: 19-150)
$295.00
Special Order
SPECIAL ORDER Item from USA. 4-6 weeks delivery
SPECIAL ORDER Item from USA. 4-6 weeks delivery
$245.00
Special Order
SPECIAL ORDER Item from USA. 4-6 weeks delivery
SPECIAL ORDER Item from USA. 4-6 weeks delivery
$245.00
Special Order
SPECIAL ORDER Item from USA. 4-6 weeks delivery
SPECIAL ORDER Item from USA. 4-6 weeks delivery
$295.00
Special Order
SPECIAL ORDER Item from USA. 4-6 weeks delivery
SPECIAL ORDER Item from USA. 4-6 weeks delivery

HiCalibre

HiCalibre Shock Spring 59/62 x 270 (Eibach 892 59_61-270) Common Fitment KYB 46mm

Proudly made in the USA
(SKU: 20-085)







Teknik Moto Springs

Teknik Shock Spring 59/61 x 270

Made in The Netherlands to ISO 9001
(SKU: 59_61-270)

Eibach Suspension Technology

Eibach EMS Moto Rear Shock Spring Kit 60.6/63.1 x 270 KYB 46 Yamaha YZ WR 125 250 426 450 (59_61-270 and 20-085)

Made in the USA (QS9000) or Germany (ISO16949)
(SKU: 892)
$249.94
Special Order
Shipped 2-3 Days. Stock at Eibach Australia.
Shipped 2-3 Days. Stock at Eibach Australia.