Öhlins STX 36 Blackline Shock Absorber Harley Davidson Sportster XL 1200 C Custom (2017–2018) – view 5⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part NumberHD 757
FitmentHarley Davidson Sportster XL 1200 C Custom (2017–2018)
Road ApprovalABE (Germany)
Mounting PositionHinten
Length279 mm
Stroke42 mm
Spring Rate26 N/
Piston Diameter36 mm
Product LineSTX 36 Blackline
DescriptionThe whole story▼

For the Harley Davidson Sportster XL 1200 C Custom built 2017–2018, Öhlins specifies HD 757. On the Sportster XL 1200 C Custom the rear unit does most of the work of keeping the chassis settled.

Key Features

  • Stroke: 42 mm
  • 36 mm damping piston
  • Monotube damper layout
  • Gas-pressurised monotube damper with the reservoir integrated into the body
  • Spring rate 26 N/mm, set against this machine's weight
  • 279 mm between mounting eyes
  • Built for the Harley Davidson Sportster XL 1200 C Custom (2017–2018); fits without modification

Damping and Adjustment

With 42 mm of stroke the damping curve has to do its work in a short distance. Eye-to-eye length is 279 mm, fixed for this application. The spring is wound to 26 N/mm, and alternative rates are catalogue items. Piston diameter is 36 mm, which is the figure that decides how hard the oil has to be pushed. Öhlins publishes a baseline setting for each part number, which is the sensible starting point. Adjustment is by click rather than by feel, so a setting can be written down and returned to.

Materials and Manufacture

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. Spring and damper are separate part numbers, so a rate change does not mean a new unit.

The Sportster XL 1200 C Custom in Particular

Short travel and substantial mass are a hard combination: there is little room to absorb anything, so damping quality matters more. At 1200 cc the Sportster XL 1200 C Custom makes enough torque to load the rear hard on corner exit, and the damper has to keep the wheel in contact while that happens.

The STX 36 Blackline in Detail

On a retro or a classic twin the black finish often looks more period-correct than gold, and nothing about the damping changes. The finish suits classic and retro machines where chrome and black dominate. Blackline in the STX 36 range means black anodising and a black spring, with the 36 mm damping hardware unchanged.

Fitment and Compatibility

Part number HD 757 and the Harley Davidson Sportster XL 1200 C Custom (2017–2018) belong together; other model years take other numbers. It is model-specific rather than universal: length, stroke and valving are all set for this chassis.

Road Approval

Road approval: a German ABE covers this part on the Harley Davidson Sportster XL 1200 C Custom. Fit it, keep the certificate with the vehicle papers, and nothing further is needed.

Specifications

  • Brand: Öhlins
  • Part Number: HD 757
  • Fitment: Harley Davidson Sportster XL 1200 C Custom (2017–2018)
  • Road Approval: ABE (Germany)
  • Mounting Position: Hinten
  • Length: 279 mm
  • Stroke: 42 mm
  • Spring Rate: 26 N/mm
  • Piston Diameter: 36 mm
  • Product Line: STX 36 Blackline
FitmentWhich bikes this fits▼
  • Harley Davidson Sportster XL 1200 C Custom (2017–2018)
07 · Support

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