HONDA CRF450R 2009

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

5.3

Bike Type

MX

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
24 in-lb (0.29 kgf-m)
Fork Travel
315 mm

Fork Features

Twin Chamber Fork
Yes

Fork Oil

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

Fork Spring Information

Standard Preload
6 mm

Fork Comments

Check floating piston for cracking

Shocks Info

Shock Manufacturer

KYB
50 mm ID

Shock Dimensions

Nitrogen Pressure
142 psi
Shock Shaft Outer Diameter
16 mm
Standard Sag
105 mm
Shock Oil
2.5 Weight
Standard Preload
15

Shock Features

Non-rebuildable
No

Shock Spring Information

Spring Rate - Claimed
5.5 kg/mm

Shock Comments

Lowering rear with pullrods suggested.