PROGRESSIVE SUSPENSION 412 Series Shock - 12" - Standard - Chrome - H-D 412-4035C

Stock Harley shocks compromise both comfort and handling—especially if you're running heavier loads or aggressive riding conditions. The Progressive 412 Series delivers tunable suspension geometry with a five-position preload adjuster, letting you dial in the exact ride quality your bike demands. At a fraction of the cost of premium alternatives, these TüV-approved shocks offer proven durability and measurable performance gains without the premium price tag.

Key Technical Specifications:

• Manufacturer: Progressive Suspension
• Model: 412 Series
• Length: 12" (center-eyelet)
• Finish: Chrome
• MPN: 412-4035C
• Fitment: Harley-Davidson models
• Spring Preload: Five-position adjuster
• Installation: Bolt-on
• Certification: TüV approved
• Design: Durable, cost-effective
• Measurement: Center-of-eyelet to center-of-eyelet
• Note: XL models (1986-2015) may require chain/belt guard modification
• Handling Effect: Slightly longer length = quicker steering
• Clearance Check: Verify wheel travel compatibility before installation

Installation Note: Confirm swingarm/axle, exhaust, chain/belt guard, and tire clearance before purchasing non-OEM length shocks. Heavy-duty applications recommended for bikes operated near maximum load capacity over 50% of the time.