ICON 2007-2021 Toyota Tundra Rear Leaf Spring Expansion Pack Kit

The ICON 2007-2021 Toyota Tundra Rear Leaf Spring Expansion Pack Kit is a rear suspension upgrade for 2007–2021 Toyota Tundra trucks that delivers 1.5 inches of rear lift height while softening the spring rate, the opposite trade-off from a traditional add-a-leaf. The kit replaces all factory secondary leaves and retains the factory main and overload springs, and includes a U-bolt kit for installation.

Shipping: ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.

Lift Without the Stiffness Penalty

Traditional add-a-leaf kits raise ride height by adding spring layers, which stiffens the overall spring rate and degrades ride quality. The ICON Rear Leaf Spring Expansion Pack takes a different approach: it removes and replaces the factory secondary leaves rather than stacking on top of them, allowing the spring rate to decrease even as ride height increases. For a Tundra used daily or on long overland runs, that means a more compliant ride over rough pavement and trail surfaces without giving up the 1.5-inch lift.

Load and Towing Capacity Preserved

Because the factory main leaf and overload springs are retained, the Tundra's load-carrying and towing capacities are maintained. Tundra owners who haul gear, tow trailers, or carry a bed-mounted camper can run this kit without compromising the truck's working capability. That is a meaningful distinction from lift solutions that sacrifice payload headroom for height.

Increased Wheel Travel When Paired with ICON Shocks

The Rear Leaf Spring Expansion Pack is designed to work in conjunction with ICON shock absorbers. When paired with compatible ICON rear shocks, the kit increases rear wheel travel beyond the factory range, giving the suspension more room to articulate over uneven terrain. The kit ships with a U-bolt kit to simplify the installation process.

Features

• 1.5-inch rear lift: raises the rear ride height without an add-a-leaf approach
• Softer spring rate: replaces factory secondary leaves to improve ride compliance
• Factory load and towing capacity maintained: retains the factory main and overload springs
• Increased wheel travel: when used with ICON rear shock absorbers
• U-bolt kit included: hardware for installation is in the box

Specifications

California Residents: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm.

Who This Is For and Isn't

This kit suits 2007–2021 Toyota Tundra owners who want 1.5 inches of rear lift with improved ride quality and no reduction in load or towing capacity. It is particularly well matched for those who also run or plan to run ICON rear shock absorbers to take full advantage of the increased wheel travel.

This kit is not compatible with the TRD rear sway bar kit. It does not fit any Tundra model year outside the 2007–2021 range. Tundra owners looking to maximize rear spring performance beyond what this kit provides should consider the ICON Multi-Rate Leaf Spring (part number 158509) instead.

Common Questions

Does this kit work with the TRD rear sway bar kit?

No. The ICON 2007–2021 Toyota Tundra Rear Leaf Spring Expansion Pack Kit is not compatible with the TRD rear sway bar kit. Tundra owners running the TRD rear sway bar should confirm compatibility with an alternative suspension solution before purchasing.

Do I need ICON shocks to install this kit?

The Rear Leaf Spring Expansion Pack installs without requiring ICON shocks, but the increased wheel travel the kit is designed to provide is realized when paired with compatible ICON rear shock absorbers. Running the springs alone still delivers the 1.5-inch lift and improved spring rate.

What hardware is included in the box?

The ICON Rear Leaf Spring Expansion Pack Kit includes the replacement secondary leaf springs and a U-bolt kit. The U-bolt kit is included to cover the hardware needed for installation without requiring a separate hardware purchase.

Will this kit reduce my Tundra's towing or payload capacity?

No. The kit retains the factory main leaf spring and overload springs, which are the primary load-bearing elements of the rear suspension. Load-carrying and towing capacities are maintained, making this kit suitable for Tundra owners who regularly haul or tow.