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The Opti-Rate Replacement Leaf Springs are the result of more than a decade of engineering, testing, and real-world refinement across every type of Transit build—from lightweight adventure vans to fully outfitted expedition rigs. Traditional leaf spring upgrades force owners to choose a specific spring rate or lift height based on estimated final weight, often requiring guesswork or last-minute changes once a build is complete. The Opti-Rate system eliminates that limitation entirely.
Designed as a truly tunable, one-size-fits-all solution, the Opti-Rate spring pack allows you to adjust both spring rate and ride height without removing the springs from the van. Each pack uses a multi-stage approach consisting of a primary main spring, a three-leaf secondary stage, and our industry-first Adjustable Preload Spacer (APS) system, which allows the secondary stage to be progressively engaged based on vehicle weight and performance preference.
Using machined aluminum spacer blocks with stackable Delrin glide pads, the APS system preloads the secondary stage into the primary spring as needed. The result is a customizable suspension solution suitable for everything from empty passenger vans to fully built overland conversions.
Light vans benefit from the softest, most compliant ride by running no APS preload.
Mid-weight vans can install the APS with a single pad for a firmer rate and increased ride height.
Heavy vans or those seeking maximum support can stack two pads for the highest rate and maximum lift.
Adjustments can be made with the springs installed using simple hand tools, making this an ideal system for DIY builders, professional upfitters, or installers working with incomplete or evolving van builds.
Note: Vans equipped with a rear sway bar require extended rear sway bar links (available separately). These leaf springs ship via truck freight; providing a commercial address will reduce shipping costs.
| Model: | Ford Transit |
| Years: | 2015–Present |
| Drive Type: | AWD & RWD |
| Notes: |
Progressive-rate leaf springs operate differently than factory parabolic springs. Periodic lubrication and cleaning is recommended for optimal performance and quiet operation. |
| Sway Bar Compatibility: | Requires extended rear sway bar links if equipped with factory rear sway bar. |
We ship throughout the United States. Most in-stock items leave our shop within 1–3 business days. Made-to-order, special-order, drop-shipped, freight, and oversized products may require additional processing or lead time. Any known special timing or availability information will be noted on the product page when applicable.
Orders placed outside of our normal business hours will be processed as soon as possible once our team returns during regular operating hours, Monday–Friday. Orders placed over the weekend or on a holiday will begin processing the next business day.
Eligible items may be considered for return within 30 days of delivery. All returns require prior authorization from PAD Overland. Return requests are subject to our return policy as well as any applicable manufacturer or supplier return requirements.
Approved customer-requested returns are subject to a 35% PAD Overland restocking fee, plus any additional return-related fees imposed by the manufacturer, supplier, or distributor.
Many products sold by PAD Overland include a manufacturer warranty. Warranty claims are subject to the individual manufacturer’s warranty terms and procedures. We are happy to help facilitate the process when possible. Please contact us with your order number, photos, and a description of the issue.
Questions about fitment, shipping, return eligibility, or a special-order product? Please contact us before placing your order. Our team is happy to help make sure you are ordering the correct product for your vehicle.
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