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K-Tech Suspension Off Road Spring System Cartridges

K-Tech Suspension
This item requires Vehicle Fitment, please select Vehicle first!
OR if you know the Part Number you need, select from Options below.

#122-021-137-002 Husqvarna 2021 FS450 20221> / 450SMR 2021> / purchase spring separately

Part #:122-021-137-002
122-021-137-002 Husqvarna 2021 FS450 20221> /  450SMR 2021> / purchase 435-660 series spring separately
MSRP: $536.54 (USD)
The highly-anticipated and revised ORSS2! Features external pre-load adjustment and now includes a hydraulic anti- bottom device permitting the use of lighter spring rates. K-Tech's  Air2Spring system has been designed to replace the original air system fitted in the latest WP AER48 fitted KTM and Husqvarna Off Road models.  
This simple design allows you to remove the original air spring system and replace it with a more conventional spring system.  This direct replacement spring system requires no machining to install and features external spring preload adjustment. The updated system now comes with a hydraulic bottoming device which protects the rider on hard landings.
Direct replacement (No machining required).
Hydraulic bottoming device.
External spring preload adjustment.
Wide range of spring rates.
Includes fork cap and pull up tools

**The ORSS system is not supplied with a spring and must be ordered separately**
Spring # 435-660-*** available from 7.6N -10.4N in increments of .4N.  For Spring Selection  Click Here


100% Commitment -- 100% Confidence. Designed with winning in mind! For over 20 years K-Tech has built on their incredible success in global road racing and motocross racing championships, constantly evolving and providing championship winning products.


It starts with passion and a dedicated R&D team who are constantly developing new and innovative product. K-Tech Suspension is a premium ISO 9001 accredited brand providing solutions whether it be at the highest level of motorsport or your daily cruiser.

K-Tech Suspension Off Road Spring System Cartridges fits the following vehicle(s):

  • 2021 Husqvarna FS450
  • 2022 Husqvarna FS450
  • 2021 KTM 450 SMR
  • 2022 KTM 450 SMR
  • 2023 KTM 450 SMR
  • 2024 KTM 450 SMR
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