KPALAG Leaf Spring Shims 2in Wide 4° Correction — 2‑Piece Steel Shims, E‑Coated for Pinion Angle Alignment

KPALAG 2" 4° steel leaf spring shims are precision-made axle angle correction washers designed to restore proper driveline geometry by adding a controlled 4° tilt to the leaf spring perch. If your vehicle’s pinion angle or driveshaft alignment is off after lifting, swapping springs, or changing suspension components, a simple shim can correct the geometry without expensive parts. These KPALAG shims are stamped from 1045 medium-carbon steel for strength and heat resistance, finished with an electrophoretic coating to resist corrosion, and sold as a convenient two-piece set sized for 2" wide spring perches.

How do these shims correct driveshaft and axle angles?

Shims slip between the leaf spring and axle perch to rotate the axle relative to the chassis. Adding a calibrated 4° wedge changes the pinion angle, helping drive components run closer to factory alignment and reducing vibration risks.

• Provides a fixed 4° correction per shim to fine-tune pinion angle
• Fits 2" wide leaf spring perches for a snug, stable placement
• Used singly or stacked (with caution) to adjust angle incrementally

What materials and finish keep these shims durable?

KPALAG uses 1045 medium-carbon steel for a balance of tensile strength and hardness, so the shim maintains shape under load and fluctuating temperatures. An electrophoretic coating (e-coat) provides a uniform corrosion barrier that extends service life in salty or wet conditions.

• 1045 steel resists bending and wear under axle load
• Stable performance across normal and elevated temperatures
• E-coat finish minimizes surface rust and paint flaking

How difficult is installation and what tools are needed?

Installation is straightforward for anyone familiar with basic suspension work: lift the vehicle, support the axle, and separate the spring from the perch just enough to insert the shim. A floor jack, jack stands, and basic hand tools are typically all that’s required; follow proper safety procedures when working under a vehicle.

• Requires jack and stands to safely lower the axle onto the shim
• No welding or permanent modification—shims are removable
• Can often be fitted in a driveway or home garage in an hour

Will these shims work with my vehicle?

These universal 2" wide, 4° correction shims are intended for leaf-spring-equipped vehicles with matching perch widths. They’re commonly used on trucks and SUVs after lifts or spring swaps, but verify perch width and required degree of correction before purchasing.

• Designed for 2" leaf spring perches—measure before buying
• Best for vehicles needing up to a 4° pinion angle change per shim
• Check driveline clearance and torque specifications after install

Who is this for: KPALAG 2" 4° steel leaf spring shims suit DIY mechanics, off-roaders, and professional technicians who need a simple, reversible way to correct axle or driveshaft angle after suspension changes. If you want a durable, corrosion-resistant shim in a ready-to-install two-pack that fits 2" perches and provides a precise 4° correction, this product is a practical, low-cost solution.

FAQ

Q: Can I stack more than one shim for a larger correction?

A: Stacking is possible but not ideal. Use caution—stacked shims change contact area and load; consult a suspension specialist for safe stacking practices.

Q: Will these shims fit my leaf spring perch?

A: They fit 2" wide perches. Measure your perch width and confirm required degree of correction before buying.