SPC Performance

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 1 on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust...

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 1.5 on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will...

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 2 on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust...

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 2.5 on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will...

Use these high strength steel alloy shims (sold in a box of 6) to adjust caster and pinion angles 3 on your most rigorous applications. Designed for 4" wide leaf springs, this steel shim will adjust...

Update '64.5 to '66 Ford and Mercury front suspensions by installing this pair of adjustable upper control arms from SPC. Each arm has a built in +3.00° of caster to improve return-to-center with...

5" stock style steel Mustang II cross shaft. Includes custom pivots with OE clevite bushings. California Residents WARNINGInstallation Instructions

Use this tool to safely and easily expand steering knuckles. Pry bars can damage the knuckle, but this tool allows safe expansion with the tool adjustment nut. Designed to operate within a 4.4 - 10mm...

Stop damaging steering knuckles by removing linkages or struts with pry bars, screwdrivers and hammers. Use the Steering Knuckle Spreader Tool to make quick work of tight and corroded steering...

A must for proper alignments. This tool securely holds the steering wheel and it's covered hooks & base prevent damage to the steering wheel and seat.----------------------------- CAUTION: This...

This great new board set includes the most popular parts for aligning today's trucks and SUVs. Don't be caught without the part you need. Shipped with our polymer display board. California Residents...

These universal shims are designed to be installed on a variety of applications. Use these at the ends of the torque rods to change toe or thrust angles on Freightliner, Hendrickson and Navistar...