Model:  YAMAHA WR450F 2025

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

0.48

Stock Shock Spring Rate

5.6kg

Bike Type

OFFROAD

Ideal Rider Weight

75 kg

Engine Specifications

4 Stroke Engine 450 cc

FORKS INFO

Fork Manufacturer

KYB USD 48 mm OD

Fork Dimensions

Compression Nut Torque
48 in-lb (0.56 kgf-m)
Fork Travel
315 mm

Fork Features

Preload Adjuster
7 mm Range
Twin Chamber Fork
Yes

Fork Oil

Fork Oil Weight
SAE 2.5
Fork Oil Level
200cc/350cc mm
Oil Quanity
2 Litres

Fork Spring Information

Spring Rate – Claimed
0.48
Standard Preload
7 mm

Fork Comments

Check floating piston for cracking

SHOCKS INFO

Shock Manufacturer

KYB
50 mm ID

Shock Dimensions

Nitrogen Pressure
142 psi
Shock Length (Eye to Eye)
464 mm
Shock Travel
120 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
15
Wheel Travel
318 mm

Shock Features

Non-rebuildable
No

Shock Comments

Replace alloy shock collars with steel if binding.

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