HONDA CR250R 1990

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

0.371

Stock Shock Spring Rate

5.1

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

2 Stroke Engine 250 cc

Forks Info

Fork Manufacturer

Showa USD 45 mm OD

Fork Dimensions

Compression Nut Torque
25 in-lb (0.29 kgf-m)
Fork Travel
290 mm

Fork Features

Twin Chamber Fork
No

Fork Oil

Fork Oil Weight
SAE 5
Fork Oil Level
75 mm* mm
Oil Quanity
2 Litres

Fork Spring Information

Standard Preload
10 mm

Fork Comments

Measure oil level with springs in.

Shocks Info

Shock Manufacturer

Showa
44 mm ID

Shock Dimensions

Nitrogen Pressure
175 psi
Shock Length (Eye to Eye)
465 mm
Shock Travel
127.4 mm
Shock Shaft Outer Diameter
14 mm
Standard Sag
95 mm
Shaft Nut Torque
25 ft-lbs (34 NM)
Shock Oil
5 Weight
Standard Preload
15

Shock Spring Information

Spring Rate - Claimed
5.2 kg/mm
HiCalibre

HiCalibre Fork Springs 40.5 x 465

40.5mm od x 465mm free length
(SKU: 19-145)

Teknik Motorsport

Outer Guide Bush 45 x 15 x 2.0

45mm id x 15mm tall x 2.0mm thick
(SKU: 24-516-00)
Inside Diameter d (mm):   45.0
Fork Inner Tube Ø d (mm):   45.0
Height H (mm):   15.0
Outside Ø D (mm):   49.0
Wall Thickness (mm):   2.0
$38.50
16 In Stock

Teknik Motorsport

Outer Guide Bush 45 x 15 x 2.0

45mm id x 15mm tall x 2.0mm thick
(SKU: 24-516-01)
Inside Diameter d (mm):   45.0
Fork Inner Tube Ø d (mm):   45.0
Height H (mm):   15.0
Outside Ø D (mm):   49.0
Wall Thickness (mm):   2.0
$38.50
2 In Stock

Teknik Motorsport

Inner Slide Bush 45 x 20 x 1.5

45mm od x 20mm tall x 1.5mm thick
(SKU: 24-640-00)
Inside Diameter d (mm):   42.0
Fork Inner Tube Ø d (mm):   45.0
Height H (mm):   20.0
Outside Ø D (mm):   45.0
Wall Thickness (mm):   1.5
$38.50
6 In Stock

Teknik Motorsport

Inner Slide Bush 45 x 20 x 1.5

45mm od x 20mm tall x 1.5mm thick
(SKU: 24-640-01)
Inside Diameter d (mm):   42.0
Fork Inner Tube Ø d (mm):   45.0
Height H (mm):   20.0
Outside Ø D (mm):   45.0
Wall Thickness (mm):   1.5
$38.50
2 In Stock



Showa Genuine Parts

Showa Oil Seal - 45 x 57 x 11mm

Showa Genuine Parts
(SKU: F32004501)
Inside Diameter d (mm):   45.0
Fork Inner Tube Ø d (mm):   45.0
Height H (mm):   11.0
Outside Ø D (mm):   57.0
$15.21
32 In Stock


Showa Genuine Parts

Bump Stop Rubber 14 x 48 x 56

14mm id x 48mm od x 56mm tall - Showa
(SKU: 22-225-00)
Height H (mm):   56.0
Outside Ø D (mm):   48.0
$36.30
2 In Stock