Timbren Industries Suspension Enhancement System Ford Super Duty

The Timbren Suspension Enhancement System (SES) is a bolt-on rubber helper spring kit, also called an auxiliary spring or load-support kit. It helps reduce rear-end sag, squat, sway and body roll when you tow a trailer or haul heavy cargo in your Super Duty truck. It replaces the factory bump stop (jounce stop) with a hollow rubber spring.

Key Features:

• Progressive spring rate: Hollow rubber springs get stiffer as the load increases, so they give more support when you need it.
• Factory ride quality: The springs sit just above the axle and stay clear of it when the truck is unloaded. This lets the factory suspension work normally until a load is applied.
• Independent side-to-side action: Each spring works on its own side of the axle. This helps with off-center loads and cornering stability.
• No maintenance: There are no air lines, fittings or inflation to manage, and no leak points.
• Bolt-on installation: Custom-fit brackets and hardware are included, and no drilling is required for most kits. Most installs can be done at home with basic hand tools.
• Durable construction: The kit uses rubber springs with laser-cut, powder-coated steel brackets.

Timbren offers its SES line in several duty ratings, including standard and severe service options. Each kit is built to the same bolt-on design. Make sure the added load never exceeds the vehicle manufacturer's GVWR.