Öhlins STX 36 Twin Shock Absorber Harley Davidson Dyna Low Rider S FXDLS (2016–2017) – HD 817⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part NumberHD 817
FitmentHarley Davidson Dyna Low Rider S FXDLS (2016–2017)
Road ApprovalABE (Germany)
Length305 mm
Stroke61 mm
Spring Rate32 N/
Piston Diameter36 mm
Spring Part Number21180-01
Product LineSTX 36 Twin
DescriptionThe whole story▼

The Öhlins HD 817 exists because the Harley Davidson Dyna Low Rider S FXDLS (2016–2017) needed its own settings, not a shared set. The unit it replaces was chosen when the Dyna Low Rider S FXDLS was costed, not when it was developed.

Key Features

  • Length 305 mm, set for this chassis
  • Listed by Öhlins for the Harley Davidson Dyna Low Rider S FXDLS (2016–2017) and no other machine
  • Monotube damper layout
  • Adjustable rebound damping via the knob above the lower eyelet
  • Fitted spring rate 32 N/mm, chosen by Öhlins for the Dyna Low Rider S FXDLS
  • Öhlins 36 mm piston
  • Öhlins spring 21180-01 included
  • Gas-pressurised monotube damper with the reservoir integrated into the body

Damping Performance

Delivered spring rate: 32 N/mm, which suits a solo rider of average weight. A 36 mm working face means lower oil speed for a given wheel speed, and lower oil speed means less foaming. Damper stroke comes to 61 mm on this number. Length is 305 mm and is not adjustable on this number. A single click produces a change most riders can detect, which is not true of every adjustable damper. Compression and rebound are adjusted independently, so support under load can be set without changing how fast the wheel returns.

Construction and Material Quality

Machining, anodising, assembly and testing all happen in the same building rather than across a supply chain. Shafts are hardened and surface-treated so the seal has a consistent surface to run against. Every unit is dyno-tested against the curve held for its part number, not sampled from a batch.

The STX 36 Twin in Detail

Twin-shock machines share the load between two units, and that changes everything about how each one is specified: half the load, but also half the leverage and often a steeper mounting angle. Both units are supplied as a matched pair with the same part number and the same valving. Preload is set by a threaded collar on each side, and both sides must be set equally.

The Dyna Low Rider S FXDLS in Particular

A cruiser is often ridden two-up with luggage, which is the load case the standard suspension rarely handles well.

Fitment and Compatibility

This listing covers Öhlins part number HD 817 for the Harley Davidson Dyna Low Rider S FXDLS, 2016–2017. Nothing about it is generic — the mounting dimensions alone rule out a different model.

Road Approval

Road approval: ABE (Germany). The unit is covered by a German ABE for the Harley Davidson Dyna Low Rider S FXDLS, so no individual inspection or entry in the vehicle documents is required. The approval document ships with the product.

Specifications

  • Brand: Öhlins
  • Part Number: HD 817
  • Fitment: Harley Davidson Dyna Low Rider S FXDLS (2016–2017)
  • Road Approval: ABE (Germany)
  • Length: 305 mm
  • Stroke: 61 mm
  • Spring Rate: 32 N/mm
  • Piston Diameter: 36 mm
  • Spring Part Number: 21180-01
  • Product Line: STX 36 Twin
FitmentWhich bikes this fits▼
  • Harley Davidson Dyna Low Rider S FXDLS (2016–2017)
07 · Support

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