Scepter 25 Cartridge Kit - +2" Cartridge KIT 49mm MED Weight M8 Softail Models — Harley-Davidson (2018-2025)

Scepter 25 cartridge suspension kit for M8 Softail baggers, featuring 25mm CNC 7075-T6 damping pistons and nitrogen-charged oil/gas separation for controlled ride quality without in-situ adjustment. Pre-tuned out of the box to deliver feedback and comfort on long runs without the need for post-install tweaking.

Features

• 25mm CNC 7075-T6 damping piston for stable damping
• Cr-Si steel springs with superior fatigue resistance
• Preload, compression, and rebound adjustable cartridges
• Nitrogen-charged oil/gas separation system
• 24-click wide-range rebound adjuster
• 24-click wide-range compression adjuster
• 15mm preload adjustability per side
• Multiple spring rate options
• Requires 2 inch longer fork tubes for installation

Specifications

• Brand: Harddrive
• Manufacturer Part #: R0900119-1
• UPC: 191361512155
• Height (Cartridge): 35.4 in
• Width: 5.9 in
• Depth: 3.9 in
• Weight: 6.7 lbs
• Country of Origin: China (Taiwan)

Fitment

Fits M8 Softail bagger models. These are +2 inch extended cartridges and require 2 inch longer fork tubes than stock.

Frequently Asked Questions

Can I adjust these cartridges after installation on a bagger?

No — once installed on a bagger frame, the adjusters are inaccessible. These kits are pre-tuned at the factory to deliver the optimal setup without post-install adjustment.

What's the difference between the bagger kit and the Dyna/FXR versions?

Bagger versions lack post-installation adjustability due to frame geometry. Dyna and FXR models allow adjuster access after install. Both are pre-tuned and ready to ride.

Do I need to replace my fork tubes?

Yes — the +2 inch cartridges require 2 inch longer fork tubes than stock. Standard tubes will not fit.

Can I choose a different spring rate?

Yes — multiple spring rate options are available. Specify your weight and riding style when ordering to get the right rate for your setup.

Is any tuning required after installation?

No — these kits are engineered and tested to require no adjustment after install. The damping and spring rates are dialed in for comfort and feedback on baggers out of the box.