Öhlins STX 36 Twin Shock Absorber Harley Davidson Dyna Low Rider 103 FXDL (2016–2017) – HD 817⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part NumberHD 817
FitmentHarley Davidson Dyna Low Rider 103 FXDL (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▼

HD 817 is the Öhlins number for the Harley Davidson Dyna Low Rider 103 FXDL as sold between 2016 and 2017. What a rider feels as a lack of rear grip is usually a damper that has stopped keeping up.

Key Features

  • Adjustable rebound damping via the knob above the lower eyelet
  • Öhlins length specification: 305 mm
  • Monotube damper layout
  • Öhlins 36 mm piston
  • Gas-pressurised monotube damper with the reservoir integrated into the body
  • 61 mm working stroke
  • Delivered with a 32 N/mm spring, selected for the Dyna Low Rider 103 FXDL
  • Fitted spring: Öhlins 21180-01

Construction and Material Quality

Shafts are hardened and surface-treated so the seal has a consistent surface to run against. Seals are specified for temperature stability rather than for the lowest unit cost. The unit is rebuildable: seals, shims and oil are catalogue items, not a reason to buy a new one.

Setting It Up for the Dyna Low Rider 103 FXDL

The 103 cc engine sets how quickly weight transfers, and damping has to be matched to that rather than to a class average. Cruisers carry weight low and long, with short suspension travel doing work that a sportbike would spread over twice the stroke.

Where This Sits in the Öhlins Line-up

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. Twin-shock installations load each damper differently from a monoshock, and Öhlins specifies the pair accordingly.

How It Behaves on the Road

The 305 mm length is dictated by the Dyna Low Rider 103 FXDL's own geometry. Spring 21180-01 is what ships with the damper; harder and softer rates are available. The damping piston measures 36 mm across, and piston area is what keeps damping force stable once the oil is hot. A 32 N/mm spring comes fitted, and it is the first thing to reconsider if the rider is heavy or light. Adjustment is by click rather than by feel, so a setting can be written down and returned to. Compression and rebound are adjusted independently, so support under load can be set without changing how fast the wheel returns.

Fitment and Compatibility

The fitment stated here is the Harley Davidson Dyna Low Rider 103 FXDL in its 2016–2017 form, under Öhlins part number HD 817. Nothing about it is generic — the mounting dimensions alone rule out a different model.

Road Approval

Road approval: a German ABE covers this part on the Harley Davidson Dyna Low Rider 103 FXDL. Fit it, keep the certificate with the vehicle papers, and nothing further is needed.

Specifications

  • Brand: Öhlins
  • Part Number: HD 817
  • Fitment: Harley Davidson Dyna Low Rider 103 FXDL (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 103 FXDL (2016–2017)
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08 · Paddock

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