Suspension Parts for KTM 390 WR 1981 – Shocks, Forks & Upgrades

Discover suspension parts guaranteed to fit the 1981 KTM 390 WR. Every product in this category has been validated against year-specific fork and shock specifications to ensure true compatibility.
You’ll find fork components, shock parts, shims, upgrade kits, complete suspension systems, chassis components, and the tools and fluids required for accurate servicing - all aligned with the suspension setup of the 1981 KTM 390 WR.

Use this page as a reliable reference when maintaining, rebuilding, or upgrading your bike’s suspension.

Bike-Specific Suspension Specifications & Setup Information

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

OFFROAD

Ideal Rider Weight

70 kg

FORKS INFO

Fork Manufacturer

Marzocchi Conventional 40 mm OD

Fork Features

Twin Chamber Fork
No

SHOCKS INFO

Shock Manufacturer

WP
46 mm ID

Shock Dimensions

Nitrogen Pressure
150 psi
Shock Shaft Outer Diameter
14 mm
Shaft Nut Torque
25 ft-lbs (34 NM)
Shock Oil
5 Weight

Shock Features

Non-rebuildable
No

Shock Comments

Compression adjuster is opposite (Counterclockwise is stiffer).

Fitment-Matched Suspension Parts by Category

Please wait, loading parts....

Please wait, loading parts....

Please wait, loading parts....

Please wait, loading parts....

Please wait, loading parts....

Please wait, loading parts....

Please wait, loading parts....

Please wait, loading parts....

Please wait, loading parts....

All Fitment-Matched Suspension Parts

Browse All 14 Products for KTM 390 WR 1981
HiCalibre

HiCalibre Fork Springs 33.6 x 550 Husqvarna 40mm fork 1981-1988

Proudly made in the USA
(SKU: 19-074)
$295.00
Special Order
SPECIAL ORDER Item from USA. 4-6 weeks delivery
SPECIAL ORDER Item from USA. 4-6 weeks delivery
$295.00
Special Order
SPECIAL ORDER Item from USA. 4-6 weeks delivery
SPECIAL ORDER Item from USA. 4-6 weeks delivery
$295.00
Special Order
SPECIAL ORDER Item from USA. 4-6 weeks delivery
SPECIAL ORDER Item from USA. 4-6 weeks delivery

HiCalibre

HiCalibre Shock Spring 59 x 250 Common Fitment KTM 620 640 LC4

Proudly made in the USA
(SKU: 20-075)

HiCalibre

HiCalibre Shock Spring 59 x 275 Common Fitment: Ohlins 00596-

Proudly made in the USA
(SKU: 20-076)

Teknik Motorsport

Bump Stop Rubber 14 x 43 x 39

14mm id x 43mm od x 39mm tall - Showa
(SKU: 22-200-00)
Shock Shaft Ø D (mm):   14.0
Height H (mm):   39.0
Outside Ø D (mm):   43.0
$22.00
209 In Stock