The Ohlins HD618 is an STX 36 twin rear shock package for Harley-Davidson FX-D and FX-DWG models, built for riders who want consistent damping control and clear chassis feedback. It uses a pressurised damping system to help maintain performance as conditions and temperatures change. Designed as a rear twin-shock setup, it’s intended to support confident road use with tunable behaviour.

Ohlins | Made to race, perfected to ride

Ohlins suspension units are engineered around controlled damping and predictable response. The focus is on stability, traction and repeatability, with adjustment range to suit different loads and riding styles.

Who this shock is for

Suited to Harley-Davidson riders running a twin-shock rear end who want more control than a basic replacement shock. A good fit for riders who value suspension feel, stability and the ability to tune the rear for their roads and pace.

Shock design & features

This is an STX 36 twin rear shock set with a gas-pressurised, oil/gas separated damping design to reduce aeration and keep damping behaviour consistent. The construction is aimed at maintaining composure through bumps and load changes while improving rear wheel control.

Tuning controls

Provides external damping adjustment for both compression and rebound, allowing you to balance support, comfort and grip. This makes it easier to tailor the rear response for different surfaces and riding priorities.

Before you install

Confirm fitment for your exact FX-D or FX-DWG variant and check clearance around exhaust and accessories typical to Harley builds. After installation, set sag and then fine-tune compression and rebound to match your load and riding conditions.

SKU HD618
Model # S36K
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) 305.0
Spring Rate Standard 27.0 - 39.0 N/mm Progressive
Type Code S36K
Stroke Metal to Metal (mm) 66.0
Product Family STX 36 Twin
Fitted Spring: 03195-07

More From This Category