YAMAHA YZ250 1979

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

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

2 Stroke Engine 250 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

Standard Preload
10 mm

Shocks Info

Shock Manufacturer

Soqi
46 mm ID

Shock Dimensions

Nitrogen Pressure
175 psi
Shock Shaft Outer Diameter
22 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
Nil Stock
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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
Nil Stock
Notify Me