The Ohlins HD751 STX 36 Blackline shock pair is a rear twin-shock setup developed for Harley-Davidson Sportster XL models. It combines a classic black finish with modern damping control to improve chassis stability and ride quality. Built as a matched pair, it is intended for riders who want more support and adjustability without changing the bike’s character.

Ohlins | Made to race, perfected to ride

Ohlins suspension is engineered with consistent damping behaviour and long-term serviceability in mind. The STX 36 Blackline family is designed to suit custom and Harley applications where appearance matters as much as control.

Who this shock is for

  • Sportster XL riders chasing a more controlled rear end for everyday road use
  • Owners updating suspension on a custom or vintage-inspired build with a black finish
  • Riders who want a tunable rear setup to suit load, roads, and personal preference

Shock design & features

  • STX 36 Blackline rear shock pair for twin-shock applications
  • Emulsion-type design (oil and gas in the same chamber)
  • Matched left/right units for rear fitment

Tuning controls

  • Spring preload adjustment
  • Rebound damping adjustment
  • Compression damping adjustment

Before you install

  • Confirm fitment for Harley-Davidson Sportster XL and rear twin-shock mounting
  • Set sag with preload first, then balance rebound and compression to suit your roads
  • Re-check all fasteners and clearances after the first ride

Serviceability/lifecycle

Like other Ohlins units, these shocks are designed to be maintained and reconditioned over time. Periodic servicing helps keep damping consistent and protects internal components as the oil and seals age.

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 HD751
Model # S36D (B)
Barcode # HD751
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 / 11.6"
Spring Rate Standard 19.0 N/mm
Type Code S36D (B)
Stroke Metal to Metal (mm) 59.0 / 2.3"
Product Family STX 36 Blackline
Fitted Spring 66419-019 00281-72
Spring Colour Black
Rec. Ohlins Oil 01309-

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