Ohlins STX 36 Twin — 1991-2017 Harley-Davidson Dyna FXD

The Ohlins STX 36 Twin is a monotube shock pair for Harley Dyna FXD models, built around a 36mm divided-piston design with rebound and preload adjustment. Hard-anodized internals and high-pressure nitrogen gas charging deliver consistent damping on street and light off-road riding.

Features

• 36mm divided-piston monotube design
• Rebound and length adjustment
• Pin-tool preload adjustment with multiple spring rates
• Hard anodized, CNC-machined components
• Low-friction shaft and seal head
• High-pressure nitrogen gas charged
• 1/2 in. length adjustable
• Sold as a pair

Specifications

• Brand: Ohlins
• Manufacturer Part #: HD 220
• Type: Monotube shock pair
• Piston Size: 36mm
• Weight: 8.8 lb
• Category: Suspension / Shocks and Struts

Fitment

Fits Harley-Davidson Dyna FXD models from 1991 through 2017.

Frequently Asked Questions

Do I need to remove the rear fender to install these?

Yes — rear fender removal is required to access the upper and lower shock mounts on Dyna models.

Can I adjust the preload myself?

Yes — Ohlins includes a pin tool for easy preload adjustment. No special tools required for spring rate changes.

What's the difference between rebound and length adjustment?

Rebound controls how fast the shock extends after compression. Length adjustment lets you raise or lower the bike's ride height by 1/2 inch total.

Will these fit a 2018+ Softail?

No — this part is specific to 1991-2017 Dyna FXD. Softails use different mounting geometry and shock designs.

Do these require any special tools to install?

Standard motorcycle tools are sufficient — a shock removal tool, impact wrench, and the included pin tool for preload adjustment.