Öhlins STX 36 Twin Shock Absorber Harley Davidson Dyna Street Bob FXDB (2006–2016) – view 2⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandÖhlins
Part NumberHD 216
FitmentHarley Davidson Dyna Street Bob FXDB (2006–2016)
Road ApprovalABE (Germany)
Length305 mm
Stroke65 mm
Spring Rate32 N/
Piston Diameter36 mm
Spring Part Number21180-01
Product LineSTX 36 Twin
DescriptionThe whole story▼

Every Öhlins part number covers one machine. HD 216 covers the Harley Davidson Dyna Street Bob FXDB (2006–2016). A factory shock is set for an average rider on an average road, and few riders are either.

Key Features

  • Monotube damper layout
  • Spring part number 21180-01 fitted
  • Emulsion-type damper without a separating piston
  • Damper stroke 65 mm
  • Direct fitment on the Harley Davidson Dyna Street Bob FXDB (2006–2016)
  • Delivered with a 32 N/mm spring, selected for the Dyna Street Bob FXDB
  • Damping piston: 36 mm
  • 305 mm between mounting eyes

How Öhlins Builds It

Every unit is dyno-tested against the curve held for its part number, not sampled from a batch. Öhlins machines its own critical components instead of buying them in, and the tolerances are where the money goes. Service parts stay available for years after a part number leaves the current price list.

About the STX 36 Twin Range

Rebound adjustment is at the lower eyelet on most numbers in this range. The STX 36 Twin replaces both sides with Öhlins units carrying a 36 mm piston, adjustable rebound and — critically for a bike that carries a pillion — a usable preload range. Preload is set by a threaded collar on each side, and both sides must be set equally.

The Dyna Street Bob FXDB in Particular

The 2006–2016 generation kept the same chassis dimensions throughout, so one Öhlins number serves the whole run. Cruisers carry weight low and long, with short suspension travel doing work that a sportbike would spread over twice the stroke.

How It Behaves on the Road

Damper stroke comes to 65 mm on this number. At 305 mm it matches the standard unit's installed length exactly. A 36 mm piston gives the oil a large working area, so the force curve stays flat as temperature rises. Öhlins identifies the spring as 21180-01. The two adjusters do genuinely separate jobs, which is what makes methodical setup possible. Preload is set separately again, and preload is what determines static sag rather than damping.

Fitment and Compatibility

Öhlins releases HD 216 against the Harley Davidson Dyna Street Bob FXDB (2006–2016). 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 Dyna Street Bob FXDB 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 216
  • Fitment: Harley Davidson Dyna Street Bob FXDB (2006–2016)
  • Road Approval: ABE (Germany)
  • Length: 305 mm
  • Stroke: 65 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 Street Bob FXDB (2006–2016)
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08 · Paddock

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