The Ohlins YA1390 STX 46 MX is a rear mono shock absorber developed for off-road use where consistent damping control and clear chassis feedback matter. Built around Ohlins race-derived architecture, it’s intended to support stable handling across changing track conditions. Supplied without a spring, allowing spring selection to suit the rider and application.

Ohlins | Made to race, perfected to ride

STX technology is designed to deliver predictable damping behaviour and maintain control as loads and speeds change through a lap. This unit is part of the STX 46 MX family and is configured as a rear mono shock for motocross and enduro-style use.

Who this shock is for

  • Riders wanting a quality rear shock platform with proper external adjustability for track and training days
  • Owners who prefer to select the correct spring separately rather than using a one-rate-fits-all approach
  • Builds where suspension tuning and serviceability are part of the plan

Shock design & features

This shock uses a gas-and-oil separated design with a piston-type reservoir arrangement to help keep damping consistent during demanding use. The STX layout is aimed at maintaining control through repeated hits and heavy braking zones, with a focus on stability and traction.

Tuning controls

External adjustments are provided for rebound damping and compression damping, including separate control for low-speed and high-speed compression. This gives the tuner a practical way to manage balance, grip and bottoming resistance without changing internal parts.

Before you install

  • Spring is not supplied; a suitable spring from the specified series is required (see notes)
  • Confirm fitment and any setup targets before installation
  • Use the recommended Ohlins oil when servicing

Serviceability/lifecycle

Like other Ohlins off-road units, this shock is designed to be serviced and revalved as required. Routine servicing helps maintain damping consistency and protects internal components over time.

SKU YA1390
Model # S46PR1C2W
Barcode # YA1390
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) 403.0
spring rate No Spring/s Supplied
Type Code S46PR1C2W
Stroke Metal to Metal (mm) 104.0
Product Family STX 46 MX
Notes 00698- series spring
Fitted Spring: Sold separately, see notes.
Rec. Ohlins Oil 01304-

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