The Ohlins YA901 STX 46 Supersport rear shock is built for riders chasing accurate damping control and predictable chassis behaviour on the Yamaha TZ 250. Developed from racing-focused suspension architecture, it is designed to keep traction consistent when you are braking hard and driving out of corners. The construction uses a gas-pressurised, oil/gas separated layout to maintain stable damping through demanding sessions.

Ohlins | Made to race, perfected to ride

STX 46 Supersport is a focused rear mono shock platform intended for serious track use. The design prioritises feedback and repeatability so you can make meaningful setup changes and feel them clearly on track.

Who this shock is for

Suited to TZ 250 riders running track days, coaching, or competition where suspension setup is part of the performance package. It is aimed at riders who want sharper feel and adjustability rather than a set-and-forget replacement.

Shock design & features

  • Gas-pressurised damping with oil/gas separation for consistent behaviour under heat load
  • Race-derived internal layout intended to improve traction and stability through corner phases
  • Independent damping circuits to support more precise tuning

Tuning controls

  • Rebound damping adjustment
  • Compression damping adjustment

Before you install

Confirm overall fitment for the Yamaha TZ 250 rear mono application and ensure the spring rate and baseline settings suit rider weight and intended use. If you are changing tyres, geometry, or linkage condition, plan to re-check sag and damping balance as part of the installation.

Serviceability/lifecycle

As a serviceable Ohlins unit, routine oil and wear-part servicing helps maintain consistent damping and feel over time, particularly with regular track use. Keeping it maintained also makes future tuning changes more predictable.

SKU YA901
Model # S46PR1C1
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) 270.0
Spring Rate Standard 70.6 N/mm
Type Code S46PR1C1
Stroke Metal to Metal (mm) 62.0
Product Family STX 46 Supersport
Fitted Spring 03112-01
Spring Colour Yellow
Rec. Ohlins Oil 01309-

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