SPC Performance 10503 Zinc Shims 3 X 6 X 0.5 (6)

The SPC Performance 10503 zinc alloy truck axle shims provide a fast and accurate method for aligning the front or rear axles of most popular tandem trailers and heavy-duty over-the-road trucks. Measuring 3 inches wide by 6 inches long at a 0.5-degree angle, these leaf spring shims are engineered for precision caster correction in demanding commercial vehicle applications.

Manufactured from a heavy-duty zinc alloy, these shims offer a significant performance advantage over traditional aluminum shims, delivering hardness comparable to premium manganese bronze shims along with greatly improved compression strength. This makes them an ideal mid-tier option for technicians who need superior durability over aluminum without the cost of bronze.

Key Features:

• Material: Heavy-duty zinc alloy construction
• Dimensions: 3 in. wide x 6 in. long x 0.5-degree angle
• Quantity: Six (6) shims included per box
• Application: Front or rear axle caster alignment on tandem trailers and heavy-duty trucks
• Performance: Superior compression strength vs. aluminum; hardness comparable to manganese bronze shims
• Country of Origin: USA

Important Notes: When ordering, ensure you have your spring pad length and width available. If using Z-blocks or other axle spacers in conjunction with these shims, use an SPC HD Axle Spacer Plate (sold separately) to distribute load evenly and prevent shim crushing. Compatible SPC Axle Spacer Plates: 3 in. wide #10598 | 3.5 in. wide #10698 | 4 in. wide #10798. Also available in manganese bronze alloy (#10504) and aluminum alloy (#10505) for varying budget and performance requirements.