Harddrive Shock Extension - Softail 10mm Single — Harley-Davidson Softail Heritage Classic, Softail Fat Boy, Softail (1983-2026)

HardDrive shock extension for Softail models with 10mm remote reservoir shocks, designed to adjust ride height by 1/2 inch. This precision CNC-machined aluminum spacer works with Speed Adaptive Valving shocks to maintain consistent performance while raising or lowering the rear end.

Features

• A7075 forged aluminum construction, CNC machined
• Works with Speed Adaptive Valving (SAV) remote reservoir shocks
• 1/2 inch height adjustment
• Fits 10mm remote reservoir mount points
• Precision tolerances for consistent suspension performance

Specifications

• Brand: HardDrive
• Manufacturer Part #: R2010042-1
• UPC: 191361228025
• Length: 4 in
• Width: 4 in
• Height: 1.5 in
• Weight: 0.25 lbs
• Country of Origin: China (Taiwan)

Fitment

Fits Harley-Davidson Softail models equipped with 10mm remote reservoir shock systems.

Frequently Asked Questions

What height adjustment does this spacer provide?

1/2 inch of ride height adjustment. Stack multiple spacers if you need greater lift.

Will this work with my HardDrive remote reservoir shocks?

Yes — this extension is designed for HardDrive 10mm remote reservoir mounts on Softail models.

Is installation difficult?

Installation involves removing the shock, installing the spacer between the reservoir and docking point, then remounting. No special tools required.

Can I use other accessories with the remote reservoir mounted?

No — the remote reservoir mounts where docking kits normally install, preventing use of other accessories in that location.