2015-2026 Sprinter 3500/3500XD 4x4 Opti-Rate Replacement Leaf Springs (Pair) (3036)

The Opti-Rate spring pack is the culmination of more than a decade of tuning leaf springs across every ride height, payload, and use case. Built-out vans often suffer harsh bottom-out from the constant weight they carry, and traditionally you had to order springs to a specific weight and lift before the build was even finished. Opti-Rate changes that with an industry-first tunable preload system, letting you dial in spring rate and ride height all in one package, a true 'one size fits all' solution for builders, installers, and step-by-step DIYers.

Features

• Industry-first tunable preload system adjusts both spring rate and ride height
• Three-part design: primary main springs, a 3-leaf secondary stage, and billet Adjustable Preload Spacers (APS) with stackable delrin glide pads
• Run no APS for the softest ride, one glide pad for a firmer mid setting, or two for maximum rate and ride height
• Preload can be changed with just a floor jack, socket wrench, and mallet, springs stay on the van
• Lengthened spring and longer shackle for a more stable, progressive curve and reduced leaf-spring harshness
• Compatible with lift blocks and existing rear geometry correction components for use with 2" lift kits
• Sold as a pair

Included Components

• Opti-Rate Full Replacement Leaf Springs (matched pair)
• 4 Billet¬¨‚ĆAdjustable Preload Spacer Blocks
• 4 Top preload spacers glide pads
• 4 Middle preload spacers
• U-bolts and Nuts
• Rear bump stop lower mounting bracket

Important Notes

• These require truck freight to ship; a commercial address helps save on shipping costs.
• Progressive rate leaf springs operate differently to factory style parabolic leaf springs. Periodic maintenance, lubrication and deep cleaning may be necessary to maintain quiet, optimum operation.

Labor Time

Recommended shop labor time: 3 hours.

Specifications

• Color: Black
• Material: Steel
• Grade: Performance