The Ohlins HD646 STX 36 Twin shock set is a rear suspension upgrade for Harley-Davidson Sportster models using twin shocks. Built around Ohlins damper know-how, it is intended to improve ride control and consistency without changing the character of the bike. This unit uses a gas-pressurised design to help maintain stable damping through varying conditions.

Ohlins | Made to race, perfected to ride

STX 36 Twin shocks are engineered for predictable damping behaviour and clear feedback at the rear wheel. For Sportster applications, this format suits riders who want improved control from a twin-shock layout while keeping straightforward serviceability.

Who this shock is for

  • Harley-Davidson Sportster riders running a twin rear shock configuration
  • Owners looking to refine ride quality and chassis control on road
  • Riders who want an Ohlins rear shock solution designed for this platform

Shock design & features

  • STX 36 Twin rear shock set for twin-shock mounting
  • Gas-pressurised damping to support consistent performance
  • Emulsion-style architecture (oil and gas in the same working volume)

Tuning controls

  • Rebound damping adjustment
  • Spring preload adjustment

Before you install

  • Confirm fitment to your exact Harley-Davidson Sportster model and year before installation
  • Set sag and preload to suit the fitted springs and typical load (solo, luggage, passenger)
  • If you are changing ride height from standard, check belt/chain alignment and clearances after installation

Serviceability/lifecycle

Ohlins shocks are built to be maintained. Regular servicing helps keep damping performance consistent and extends component life, particularly on bikes used year-round or on rougher roads.

SKU HD646
Model # S36E
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) 360.5
Spring Rate Standard 12.0 - 19.0 N/mm Progressive
Type Code S36E
Stroke Metal to Metal (mm) 105.0
Product Family STX 36 Twin
Fitted Spring: 00480-02

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