The Ohlins HD745 STX 36 Twin is a rear twin-shock set-up for Harley-Davidson Sportster XL models. It’s built to deliver controlled damping and consistent feel across varied road conditions. This unit uses a gas-pressurised damping system to support stability and reduce fade during extended use.

Ohlins | Made to race, perfected to ride

Ohlins suspension is developed with a focus on predictable chassis behaviour and repeatable damping control. On the Sportster platform, this helps maintain traction and stability when loads and road inputs change quickly.

Who this shock is for

Suited to Sportster XL riders who want clearer feedback from the rear of the bike and the ability to tune the suspension to their riding style. It’s a practical choice for riders who value control and stability over a purely cosmetic upgrade.

Shock design & features

This STX 36 Twin configuration uses a gas-pressurised design for more consistent damping under sustained use. The internal layout is designed to keep damping performance stable and predictable as temperatures rise.

Tuning controls

Damping can be adjusted for both compression and rebound, allowing you to balance comfort, support and grip to suit conditions and preference. Independent compression and rebound circuits provide a wider, more useful adjustment range when fine-tuning.

Before you install

  • Confirm the application is correct for Harley-Davidson Sportster XL and a rear twin-shock mounting position.
  • Set sag and damping from the current baseline before making changes, adjusting one variable at a time.
  • Check surrounding clearances and mounting hardware condition during fitment.

Serviceability/lifecycle

As with performance suspension, periodic servicing helps maintain damping consistency and seal condition over time. Keeping the unit clean and inspecting for leaks or damage will support long-term performance.

SKU HD745
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) 296.0
Spring Rate Standard 20.0 - 32.0 N/mm Progressive
Type Code S36E
Stroke Metal to Metal (mm) 71.0
Product Family STX 36 Twin
Fitted Spring 21212-04 (C)

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