YAMAHA YZ125 1983

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

0.24

Stock Shock Spring Rate

4.25

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

2 Stroke Engine 125 cc

Forks Info

Fork Manufacturer

KYB Conventional 38 mm OD

Fork Oil

Fork Oil Weight
SAE 7.5
Fork Oil Level
130 mm
Oil Quanity
1 Litre

Fork Spring Information

Spring Rate – Claimed
0.24
Standard Preload
20 mm

Shocks Info

Shock Manufacturer

Soqi
46 mm ID

Shock Dimensions

Nitrogen Pressure
114 psi
Shock Length (Eye to Eye)
486 mm
Shock Travel
113 mm
Shock Shaft Outer Diameter
14 mm
Standard Sag
103 mm
Shaft Nut Torque
25 ft-lbs (34 NM)
Shock Oil
5 Weight
Teknik Motorsport

Outer Guide Bush 38 x 12 x 2.0

38mm id x 12mm tall x 2.0mm thick
(SKU: 24-572-00)
Inside Diameter d (mm):   38.0
Fork Inner Tube Ø d (mm):   38.0
Height H (mm):   12.0
Outside Ø D (mm):   42.0
Wall Thickness (mm):   2.0
$40.15
1 In Stock

Teknik Motorsport

Inner Slide Bush 38 x 20 x 1.0

38mm od x 20mm tall x 1.0mm thick
(SKU: 24-667-00)
Inside Diameter d (mm):   36.0
Fork Inner Tube Ø d (mm):   38.0
Height H (mm):   20.0
Outside Ø D (mm):   38.0
Wall Thickness (mm):   1.0
$40.15
1 In Stock