The Ohlins KA148 STX 36 Twin rear shock set is built for riders who want predictable rear grip and stable chassis behaviour on the Kawasaki ZRX 400. This twin-shock arrangement uses a separated gas/oil design to keep damping consistent as conditions change. It is supplied with a fitted spring and a factory baseline intended to suit real-world street riding.

Ohlins | Made to race, perfected to ride

Ohlins suspension is developed from competition engineering, then refined for road use where compliance and control matter just as much as outright firmness. The KA148 STX 36 Twin aims for clear feedback, balanced support and repeatable adjustment.

Who this shock is for

Suited to ZRX 400 owners updating ageing twin shocks or chasing more composed handling on spirited road rides. It’s also a solid choice if you want more tuning range than a basic replacement, without moving away from the standard twin-shock layout.

Shock design & features

This is an STX 36 Twin design using a pressurised, oil/gas-separated architecture rather than an emulsion layout. The intent is stable damping behaviour and reduced aeration under sustained use. The unit is designed as a dedicated rear twin-shock fitment for the ZRX 400.

Tuning controls

Adjustment is provided for rebound damping, compression damping, and spring preload. These controls let you balance comfort and support, then fine-tune how the rear reacts to bumps, acceleration loads and mid-corner changes.

Before you install

  • Confirm the bike model and year match the application for KA148.
  • Inspect linkage points, mounting hardware and swingarm bushings for wear before fitting new shocks.
  • Set sag and record your starting settings so future changes are measured and reversible.

Serviceability/lifecycle

Ohlins units are designed to be serviced, with wear parts replaceable to restore performance over time. Periodic servicing helps keep damping consistent and protects internal components, particularly if the bike sees frequent wet weather or aggressive use.

SKU KA148
Model # S36PR1C1LB
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 Twin
Shock Length Eye to Eye (mm) 360.0 +10/-0
Spring Rate Standard 16.0 - 26.0 N/mm Progressive
Type Code S36PR1C1LB
Stroke Metal to Metal (mm) 94.0
Product Family STX 36 Twin
Fitted Spring 00480-12

More From This Category