The Ohlins HD515 STX 46 Custom & Heritage rear shock absorber is built for Harley-Davidson Softail Fat Bob models where ride control matters but the classic look is non-negotiable. It combines Ohlins damping design with a Custom & Heritage finish to suit vintage-inspired and custom builds. This unit replaces the HD 505.

Ohlins | Made to race, perfected to ride

Developed from Ohlins suspension experience and packaged for cruiser applications, the STX 46 Custom & Heritage range is aimed at improving stability and comfort without changing the character of the bike. It is a rear mono shock application.

Shock design & features

This is an oil/gas separated shock design intended to provide consistent damping performance. The construction and finish are chosen to complement custom cruiser aesthetics while keeping the internals service-focused.

Tuning controls

Adjustment is provided for rebound damping and spring preload, allowing you to set the shock for rider load and desired chassis control. These adjustments are intended to help balance comfort, grip and stability for road use.

Is it right for you?

Choose this shock if you want a dedicated Ohlins rear mono upgrade for a Softail Fat Bob that suits Custom & Heritage styling and gives you practical tuning range. If you need a fitment update from an earlier model, note that it replaces HD 505.

Before you install

  • Confirm motorcycle model and year compatibility for Softail Fat Bob fitment.
  • Plan a baseline setup after installation by setting preload for your typical load, then refine rebound to suit your roads.
  • Retain installation notes for future servicing.

Serviceability/lifecycle

Ohlins shocks are designed to be serviced to maintain performance over time. Periodic inspection and oil servicing will help keep damping consistent as kilometres accumulate.

SKU HD515
Model # S46DR1S
Brand Ohlins
Shipping Weight 5.0000kg
Shipping Size 0.300 x 0.300 x 0.500m
Type Units
See our Shipping Information See our Frequently Asked Questions
Position (Front or Rear) Rear Mono
Shock Length Eye to Eye (mm) 341.5
Spring Rate Standard 105.0 N/mm
Type Code S46DR1S
Stroke Metal to Metal (mm) 57.5
Product Family STX 46 Custom & Heritage
Notes Replaces HD 505
Fitted Spring 21103-36
Rec. Ohlins Oil 01309-

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