The Ohlins HD644 STX 36 Twin rear shock set is built for Harley-Davidson Sportster models that need controlled, repeatable damping on real roads. It uses a pressurised oil and gas design to help keep damping stable as conditions and temperatures change. The focus is predictable support, tyre contact and clear feedback rather than harshness.

Ohlins | Made to race, perfected to ride

STX technology is designed to deliver consistent damping behaviour and a composed chassis feel across a wide range of riding styles. The result is improved control when you load the bike through braking, acceleration and cornering.

Who this shock is for

Suited to Sportster riders who want a more planted rear end and the ability to tune feel for different roads, riding pace or load. It’s also a good match for riders chasing cleaner response from the rear suspension without compromising everyday usability.

Shock design & features

This is a rear twin-shock setup using a pressurised oil and gas separated architecture to reduce aeration and keep damping consistent over longer rides. The STX 36 Twin platform is engineered for stable performance and controlled movement through the stroke.

Tuning controls

Adjustability includes rebound damping and compression damping, along with length adjustment to help fine-tune chassis attitude. These controls let you balance comfort, grip and stability for your tyre choice, road surface and riding style.

Before you install

  • Confirm clearance and fitment for your specific Sportster configuration and accessories.
  • After installation, set sag and then fine-tune rebound and compression to suit your load and road conditions.
  • If changing ride height via length adjustment, re-check belt alignment/drive behaviour and overall chassis balance.
SKU HD644
Model # S36PR1C1LB
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 Twin
Shock Length Eye to Eye (mm) 360.0 +10/-0
Spring Rate Standard 16.0 - 26.0 N/mm Progressive
Type Code S36PR1C1LB
Stroke Metal to Metal (mm) 101.0
Product Family STX 36 Twin
Fitted Spring 00480-12

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