Suspension Parts for 1998 YAMAHA YZ400F Motorbikes | Guaranteed Fitment

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

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

Fork Type: 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 2.5
Fork Oil Level: 120 mm

Fork Spring Information

Spring Rate – Claimed: 0.46
Standard Preload: 10 mm

SHOCKS INFO

Shock Manufacturer

Shock Type: 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

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

9 Parts

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FORK COMPRESSION ADJUSTER ASSY

5 Parts

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SUSPENSION LOCKNUTS & BUSHES

6 Parts

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TOOLS & LUBRICANTS

25 Parts

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All Fitment-Matched Suspension Parts

Browse All 63 Products for YAMAHA YZ400F 1998

16 x 12mm Shock Seal Head Bullet

Teknik Tools

16 x 12mm Shock Seal Head Bullet

Motorcycle Suspension Tools
(SKU: 93-025-00)

$19.95
5 In Stock

Shock Seal Head Brass Bullet 5Pc Kit

Techtool

Shock Seal Head Brass Bullet 5Pc Kit

12.5x10 | 14x12 | 16x12 | 18x12 | 18x16 mm
(SKU: 93-031-00)

$76.95
3 In Stock

Shock Seal Head Steel Bullet 4pc Kit

Techtool

Shock Seal Head Steel Bullet 4pc Kit

14x12 | 16x12 | 18x12 | 18x16 mm
(SKU: 93-031-01)

$69.95
11 In Stock

Techtool Fork Tube Tool & Cartridge Rod Holding Plate

Techtool

Techtool Fork Tube Tool & Cartridge Rod Holding Plate

For KYB, Showa & WP Twin or Open Chamber Forks
(SKU: 93-032-00)

$220.00
12 In Stock

Shock Bushing Driver Set

Techtool

Shock Bushing Driver Set

(SKU: 93-118-00)

$33.00
14 In Stock

Eibach EMS Moto Front Fork Spring Kit. 41.2 x 462 KYB 46mm USD YZ WR 125 250 400 426 1996-2004

Eibach Suspension Technology

Eibach EMS Moto Front Fork Spring Kit. 41.2 x 462 KYB 46mm USD YZ WR 125 250 400 426 1996-2004

Made in the USA (QS9000) or Germany (ISO16949)
(SKU: 981)

From $249.94

Spring Rate: 0.38 kg/mm

$249.94
Special Order

Shipped 2-3 Days. Stock at Eibach Australia.

Shipped 2-3 Days. Stock at Eibach Australia.

Spring Rate: 0.40 kg/mm

$249.94
2 In Stock

Spring Rate: 0.42 kg/mm

$249.94
1 In Stock

Spring Rate: 0.44 kg/mm

$249.94
1 In Stock

Spring Rate: 0.46 kg/mm

$249.94
2 In Stock

Spring Rate: 0.48 kg/mm

$249.94
Coming Soon

Spring Rate: 0.45 kg/mm

$249.94
1 In Stock

DRC Fork Seal Driver Set | Universal | 40-50mm

DRC Zeta Hardware

DRC Fork Seal Driver Set | Universal | 40-50mm

DRC Fork Seal Driver Tool Set
(SKU: D59-26-005)

$177.09
29 In Stock

DRC SHOCK SEAL HEAD INSERT KIT | KYB/SHOWA | INNER 12mm / OUTER 14/16/18mm

DRC Zeta Hardware

DRC SHOCK SEAL HEAD INSERT KIT | KYB/SHOWA | INNER 12mm / OUTER 14/16/18mm

Shock seal Bullet set -14x12 16x12 18x12
(SKU: D59-37-135)

$49.50
8 In Stock

K-Tech Shock Absorber Piston Bush 46.00x11.50x1.20mm -KYB

K-Tech

K-Tech Shock Absorber Piston Bush 46.00x11.50x1.20mm -KYB

(SKU: PB-46115120)

Height H (mm): 11.50

Outside Ø D (mm): 46.0

Wall Thickness (mm): 1.20

$36.95
9 In Stock

SKF KYB Shock Seal Case Assembly 46 x 16 x 20

SKF Sealing

SKF KYB Shock Seal Case Assembly 46 x 16 x 20

46mm od x 16mm id x 20mm tall - KYB
(SKU: SH2-KYB1646)

Shock Bore Ø D (mm): 46.0

Shock Shaft Ø D (mm): 16.0

Height H (mm): 20.0

$79.95
12 In Stock

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