Öhlins STX 36 Blackline Shock Absorber Harley Davidson Road Glide Special FLTRXS (2017–2021) – view 8⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part NumberHD 774
FitmentHarley Davidson Road Glide Special FLTRXS (2017–2021)
Road ApprovalABE (Germany)
Mounting PositionHinten
Length305 +10/-0 mm
Stroke66 mm
Spring Rate25 N/
Piston Diameter36 mm
Spring Part Number00280-21
DescriptionThe whole story▼

Öhlins developed HD 774 around the Harley Davidson Road Glide Special FLTRXS (2017–2021) — its weight, its linkage and its geometry. A factory shock is set for an average rider on an average road, and few riders are either.

Key Features

  • Öhlins spring 00280-21 included
  • Direct fitment on the Harley Davidson Road Glide Special FLTRXS (2017–2021)
  • Adjustable overall length for ride-height and geometry changes
  • Adjustable rebound damping via the knob above the lower eyelet
  • Stroke: 66 mm
  • Gas-pressurised monotube damper with the reservoir integrated into the body
  • 36 mm piston diameter
  • Monotube damper layout

Where This Sits in the Öhlins Line-up

Servicing is identical to the standard STX 36. The STX 36 in Blackline finish: black anodised body, black spring, 36 mm damping piston. Twin-shock applications are supplied as a matched pair.

How It Behaves on the Road

The fitted spring rate is 25 N/mm, chosen against the Road Glide Special FLTRXS's weight distribution rather than a catalogue average. Length runs to 305 +10/-0 mm, so rake and trail on the Road Glide Special FLTRXS become something to dial rather than inherit. The damping piston measures 36 mm across, and piston area is what keeps damping force stable once the oil is hot. The fitted spring is 00280-21, and Öhlins lists neighbouring rates under their own numbers. Compression and rebound are adjusted independently, so support under load can be set without changing how fast the wheel returns. The adjuster range is usable end to end rather than only around the middle.

Why This Machine Needs It

This part number spans model years 2017 to 2021; 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.

Materials and Manufacture

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.

Fitment and Compatibility

Öhlins releases HD 774 against the Harley Davidson Road Glide Special FLTRXS (2017–2021). 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 Road Glide Special FLTRXS. Fit it, keep the certificate with the vehicle papers, and nothing further is needed.

Specifications

  • Brand: Öhlins
  • Part Number: HD 774
  • Fitment: Harley Davidson Road Glide Special FLTRXS (2017–2021)
  • 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 Glide Special FLTRXS (2017–2021)
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