The Ohlins HD757 STX 36 Blackline shock pair is a rear twin-shock replacement for Harley-Davidson Sportster XL models. Built around Ohlins’ STX 36 architecture, it’s designed to improve control and composure while retaining the character of the bike. This set includes spring preload adjustment and a rebound damping adjuster.

Ohlins | Made to race, perfected to ride

STX 36 Blackline products combine proven Ohlins damping design with a dark finish suited to custom and classic builds. This model is supplied as a matched pair for rear fitment.

Who this shock is for

Suited to Sportster XL riders wanting more predictable rear suspension behaviour from a quality twin-shock setup. It’s a practical option for road use where consistent damping and straightforward adjustability are priorities.

Shock design & features

This is an emulsion-style shock design, where oil and gas are not separated by an external reservoir. The STX 36 layout is compact and well suited to twin-shock Harley applications, with the Blackline finish matching darker builds.

Tuning controls

  • Spring preload: to set ride height and support for load and rider weight.
  • Rebound damping: to control how quickly the shock extends after a bump and to manage chassis movement.

Before you install

  • Confirm compatibility for your exact Harley-Davidson Sportster XL model and year.
  • Set preload and rebound to a sensible baseline, then fine-tune after a short test ride.
  • If your current setup is worn or uneven side-to-side, replace as a pair (as supplied) to maintain balance.
SKU HD757
Model # S36D (B)
Barcode # HD757
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) 279.0 / 10.9"
Spring Rate Standard 26.0 N/mm
Type Code S36D (B)
Stroke Metal to Metal (mm) 42.0 / 1.6"
Product Family STX 36 Blackline
Fitted Spring 66420-26
Spring Colour Black
Rec. Ohlins Oil 01309-

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