The Ohlins KA2190 STX 46 MX is a rear mono shock absorber developed for Kawasaki KX 85 motocross applications. Built around Ohlins’ STX architecture, it’s designed to deliver consistent damping response and clear chassis feedback across changing track conditions. This unit is supplied without a spring, allowing the correct rate to be selected for rider weight and use.

Ohlins | Made to race, perfected to ride

STX 46 MX shocks are engineered for riders who want dependable control and tuneability from a purpose-built motocross damper. The design focuses on stability through braking bumps, support in corners, and traction on acceleration, with damping behaviour intended to remain consistent as conditions vary.

Who this shock is for

  • Kawasaki KX 85 riders replacing a worn or underperforming rear shock
  • Motocross riders who want a higher level of damping control and adjustability
  • Owners who prefer selecting a spring rate separately to suit rider weight and track conditions

Shock design & features

This is an oil/gas separated, gas-pressurised shock design intended to reduce fade and maintain predictable damping during repeated heavy impacts. The STX layout separates damping functions for more controlled response and improved feel at the rear wheel.

Tuning controls

The KA2190 provides external adjusters for rebound damping and compression damping. This allows changes to how quickly the shock extends after an impact and how it resists compression under bumps, landings, and load transfer.

Before you install

  • No spring is supplied; confirm the correct spring for your application before installation
  • Check linkage, swingarm bearings, and mounting hardware condition to get the full benefit of the shock
  • Plan a baseline setup after fitment and record changes as you tune

Serviceability/lifecycle

As a serviceable Ohlins motocross shock, performance is best maintained with regular inspection and periodic servicing based on use and riding conditions. Fresh oil, seals, and correct gas pressure help keep damping consistent over time.

SKU KA2190
Model # S46PR1C2W
Barcode # KA2190
Brand Ohlins
Shipping Weight 5.0000kg
Shipping Size 0.300 x 0.300 x 0.500m
Type Units
See our Shipping Information See our Frequently Asked Questions
Position (Front or Rear) Rear Mono
Shock Length Eye to Eye (mm) 378.0
spring rate No Spring/s Supplied
Type Code S46PR1C2W
Stroke Metal to Metal (mm) 109.0
Product Family STX 46 MX
Notes 00698- series spring *Replaced by DMX 0103*
Fitted Spring: Sold separately, see notes.
Rec. Ohlins Oil 01304-

More From This Category