Rear Leaf Spring Replacement and Add-a-Leaf

The Tacoma's stock rear leaf pack is famous for two things: it rides like a buckboard when empty, and it sags badly the moment you carry any real weight. 2nd gen (2005–2015) and 3rd gen (2016–2023) both share this characteristic, though Toyota issued a TSB and revised the post-TSB packs around 2012. There are three ways to address it: an add-a-leaf, a replacement pack, or a custom progressive pack.

An add-a-leaf is a single extra leaf you bolt into the existing stock pack. Icon, OME, Deaver, and others all sell them in the $120–$200 range. With factory loads, an add-a-leaf yields about 1.5 inches of lift. It stiffens the existing pack and slows future sag but doesn't really fix the underlying issue — the leaves underneath are still tired stock leaves. Add-a-leaf is the right answer if you're on a tight budget, your stock pack is still in good shape, and you're not carrying a topper or camper. It's the wrong answer if your stock pack already has visible reverse arch.

A full replacement pack is the right answer for anyone running real overland gear. OME Dakar (about $400 per side equivalent, often sold as a pair around $400–$500) is the budget overlander's standard — about 2.5 to 2.75 inches of lift, designed for around 250 lb constant load, decent ride empty. Deaver offers three stages keyed to constant bed weight: Stage I (0–300 lb), Stage II (400–600 lb), and Stage III (700–1,000 lb). Deaver's 9-leaf and 10-leaf progressive packs run thinner individual leaves that yield a smoother spring curve through the full suspension cycle — that progressive rate is why people who can afford Deavers run them. Plan on $950–$1,100 for the Deaver pack, plus shocks rated for the new lift height (Bilstein 5100, 5160, or Icon 2.0).

Either way, factor in the consumables. The U-bolts that clamp the pack to the axle are one-time-use; budget $50–$80 for new ones. The shackle bushings are usually shot if the truck has 100k+ miles, and new poly or rubber bushings are cheap insurance. The center pin that locates the pack on the axle is tiny and grade-8 — check it. And in any rust state (Phoenix-spec Tacomas are usually fine, Northeast trucks are not), soak every bolt for 24 hours with penetrant before you swing a wrench, because shearing a leaf spring eye bolt on a rusted axle is a tow-truck-level mistake.

Steps

1. Park on a flat surface, chock the front wheels, and break rear lug nuts loose.
2. Lift the rear, support the frame on jack stands, and let the axle hang on a second floor jack under the diff.
3. Disconnect the rear shocks at the lower mounts.
4. Disconnect the parking brake cable bracket and the rear brake hard line bracket from the axle if they interfere.
5. Remove the U-bolts. Lower the axle slightly to relax the leaf pack.
6. Remove the rear shackle bolts, then the front spring eye bolt.
7. Pull the old pack out. Inspect bushings and shackle plates; replace as needed.
8. Install the new pack. Engage the center pin in the axle perch.
9. Install new U-bolts with the supplied or grade-8 nuts. Torque per manufacturer spec.
10. Reconnect shocks, brake lines, parking brake cable. Lower truck to ride height.
11. Final torque all bolts at ride height. Re-check after 100 miles.

Why it works

• Full pack replacement fixes load capacity, not height
• Deaver progressive packs ride better empty than stock
• OME Dakar is the budget overlander default
• Add-a-leaf is a 2-hour, $150 fix for mild needs

Trade-offs

• Rust-belt Tacomas turn a 3-hour job into a 12-hour job
• Add-a-leaf doesn't fix tired underlying leaves
• Stiffer pack rides harshly when empty
• New U-bolts and shackle hardware add to the parts cost

Tools required

• floor jack
• jack stands
• metric sockets 14mm-22mm
• breaker bar
• PB Blaster
• torque wrench
• pickle fork or pry bar

Parts

Sources

• Replacing Leaf Springs on a Tacoma — AdventureTaco
• Buyer's Guide: Leaf Springs For 2nd & 3rd Gen Tacoma
• Deaver Toyota Tacoma 05-23 Rear Leaf Spring Kit

Related

• Heavy Leaf Pack Upgrade — Deaver / OME / Icon
• Budget Lift Kit — Coilovers and Add-a-Leaf (≤$600)
• All Toyota Tacoma guides & tools
• Browse the full DIY database

Written and maintained by an AZ wheeler and driveway wrencher. How we source guides. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.