Öhlins STX 36 Blackline Shock Absorber Harley Davidson Road King Special FLHRXS (2017–2022) – view 8⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part NumberHD 774
FitmentHarley Davidson Road King Special FLHRXS (2017–2022)
Road ApprovalABE (Germany)
Mounting PositionHinten
Length305 +10/-0 mm
Stroke66 mm
Spring Rate25 N/
Piston Diameter36 mm
Spring Part Number00280-21
DescriptionThe whole story▼

The Öhlins HD 774 exists because the Harley Davidson Road King Special FLHRXS (2017–2022) needed its own settings, not a shared set. Damping that fades turns a predictable Road King Special FLHRXS into one that has to be ridden around.

Key Features

  • Adjustable rebound damping via the knob above the lower eyelet
  • 66 mm working stroke
  • Built to 305 +10/-0 mm installed length
  • Damping piston: 36 mm
  • Fitted spring: Öhlins 00280-21
  • Bolts to the Harley Davidson Road King Special FLHRXS (2017–2022) using the standard mounting points
  • Monotube damper layout
  • Adjustable overall length for ride-height and geometry changes

Construction and Material Quality

Every Öhlins dealer can re-valve the unit, because the shim stack is a documented, serviceable assembly. Öhlins manufactures in Upplands Väsby, north of Stockholm, and assembles and tests every unit there before it ships. Spring and damper are separate part numbers, so a rate change does not mean a new unit.

Damping and Adjustment

The spring carries Öhlins number 00280-21 and can be exchanged for a different rate without replacing the damper. At 36 mm the piston is large enough that the shim stack, not the orifice, decides the damping. Damper stroke comes to 66 mm on this number. Öhlins fits a 25 N/mm spring to this number; riders far from average weight should expect to change it. Öhlins publishes a baseline setting for each part number, which is the sensible starting point. Compression and rebound are adjusted independently, so support under load can be set without changing how fast the wheel returns.

The Road King Special FLHRXS in Particular

This part number spans model years 2017 to 2022; earlier and later generations take different numbers. Cruisers carry weight low and long, with short suspension travel doing work that a sportbike would spread over twice the stroke.

The STX 36 Blackline in Detail

Blackline in the STX 36 range means black anodising and a black spring, with the 36 mm damping hardware unchanged. The finish suits classic and retro machines where chrome and black dominate. Servicing is identical to the standard STX 36.

Fitment and Compatibility

Öhlins part number HD 774 is the correct number for the Harley Davidson Road King Special FLHRXS as built 2017–2022. Because the settings are model-specific, fitting it to a related machine would mean running the wrong specification.

Road Approval

Road approval: the Harley Davidson Road King Special FLHRXS is covered by a German ABE for this part number. The certificate is supplied and should stay with the vehicle documents.

Specifications

  • Brand: Öhlins
  • Part Number: HD 774
  • Fitment: Harley Davidson Road King Special FLHRXS (2017–2022)
  • Road Approval: ABE (Germany)
  • Mounting Position: Hinten
  • Length: 305 +10/-0 mm
  • Stroke: 66 mm
  • Spring Rate: 25 N/mm
  • Piston Diameter: 36 mm
  • Spring Part Number: 00280-21
FitmentWhich bikes this fits▼
  • Harley Davidson Road King Special FLHRXS (2017–2022)
07 · Support

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