Öhlins STX 46 Supersport Shock Absorber Kawasaki ZX4-R (2024–2025) – view 4⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part NumberKA 401
FitmentKawasaki ZX4-R (2024–2025)
Road ApprovalABE (Germany)
Mounting PositionRear
Length307,5 +4/-2 mm
Stroke49,5 mm
Spring Rate90 N/
Piston Diameter36 mm
Spring Part Number01093-29
DescriptionThe whole story▼

Öhlins lists part number KA 401 for one machine: the Kawasaki ZX4-R built 2024–2025. Standard rear dampers are built to a price; this one is built to a specification.

Key Features

  • Adjustable compression damping via the gold click adjuster
  • Remote hydraulic spring-preload adjuster on a flexible hose
  • Adjustable overall length for ride-height and geometry changes
  • Twin-tube TTX damper layout
  • Built to 307,5 +4/-2 mm installed length
  • Gas-pressurised damper with a piggyback external reservoir
  • Bolts to the Kawasaki ZX4-R (2024–2025) using the standard mounting points
  • Delivered with a 90 N/mm spring, selected for the ZX4-R

Damping and Adjustment

Fill specification is 01309, which is part of the setting rather than a detail. 49,5 mm of stroke is what the ZX4-R's linkage allows, and the shim stack is set for exactly that. With 307,5 +4/-2 mm on offer, rear ride height can be raised to sharpen turn-in or dropped to calm the ZX4-R down. A 36 mm piston gives the oil a large working area, so the force curve stays flat as temperature rises. Compression and rebound are adjusted independently, so support under load can be set without changing how fast the wheel returns. A single click produces a change most riders can detect, which is not true of every adjustable damper.

The STX 46 Supersport in Detail

Support under braking and on corner exit takes priority over small-bump comfort, which suits a machine ridden hard on good surfaces. The Supersport specification of the STX 46 moves the valving toward the track end of Öhlins' road range. Length adjustment lets rear ride height be raised to quicken the steering.

Construction and Material Quality

Gas pressure is set at the factory and holds through normal service intervals. Production has stayed in Sweden since the company was founded in 1976. Every unit is dyno-tested against the curve held for its part number, not sampled from a batch.

Fitment and Compatibility

This listing covers Öhlins part number KA 401 for the Kawasaki ZX4-R, 2024–2025. Öhlins releases the same number for 2 closely related machines; this listing is the Kawasaki ZX4-R version of that fitment.

Road Approval

Road approval: ABE (Germany). The unit is covered by a German ABE for the Kawasaki ZX4-R, so no individual inspection or entry in the vehicle documents is required. The approval document ships with the product.

Fitting and Setup Service

We are an authorised Öhlins service centre, so the installation does not have to be your problem: we fit and set up Öhlins components in our own workshop. Ask us when you order and we will include the work.

Specifications

  • Brand: Öhlins
  • Part Number: KA 401
  • Fitment: Kawasaki ZX4-R (2024–2025)
  • Road Approval: ABE (Germany)
  • Mounting Position: Rear
  • Length: 307,5 +4/-2 mm
  • Stroke: 49,5 mm
  • Spring Rate: 90 N/mm
  • Piston Diameter: 36 mm
  • Spring Part Number: 01093-29
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
  • Kawasaki ZX4-R (2024–2025)
07 · Support

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