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.

Öhlins Motorcycle Suspension Warranty

New Öhlins motorcycle shock absorbers, front forks and cartridge kits supplied by Teknik Motorsport are covered by the applicable Öhlins manufacturer’s warranty against defects in materials and workmanship.

Teknik Motorsport is an authorised Öhlins Service Centre and administers warranty claims in accordance with the Öhlins warranty conditions. The service intervals below form part of the maintenance requirements for Öhlins products supplied and supported by Teknik Motorsport.

This warranty is in addition to the consumer guarantees that apply under the Australian Consumer Law.

  • Registered motorcycles — non-competition road use Five years, subject to correct application, installation, setup and servicing every: 20,000 km or two years, whichever occurs first.
  • Registered motorcycles — adventure and light off-road use Five years, subject to correct application, spring rate, setup and servicing every: 10,000 km or annually, whichever occurs first.
  • Unregistered or competition motorcycles Two years for eligible Öhlins MX and Enduro products, subject to inspection every ten hours and servicing every: 30 operating hours or annually, whichever occurs first.

Compliance with the applicable service interval is a condition of the Öhlins manufacturer’s warranty. Evidence of servicing may be required when a warranty claim is assessed.

A seal leak, loss of damping performance or internal wear arising after the prescribed service interval has been exceeded will be treated as a service or maintenance issue rather than a manufacturing defect.

Warranty repairs

Öhlins suspension products are designed to be serviced and repaired. Where a warranty claim is approved, the normal remedy is repair of the customer’s original suspension unit using genuine Öhlins replacement parts.

Replacement of a complete shock absorber, fork or cartridge kit is not automatic and would normally occur only where the product has suffered a manufacturing failure that cannot reasonably be repaired. This is at Ohlins discretion. 

Öhlins spare parts and service kits

Öhlins spare parts, seals, bushes, service kits, springs, fluids and individual components are covered only against defects present when supplied.

No fixed age-based warranty applies to wear items, service parts or consumable components. Wear, deterioration, contamination, incorrect installation and damage caused by another component are not manufacturing defects.

Öhlins gives the customer a meaningful five-year warranty on products (Units), provided the suspension is maintained as suspension should be maintained. Teknik supports that warranty locally, can inspect the product properly, and can repair it with genuine parts rather than discarding it.

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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