SPC Performance AL SHIMS 4X6.5X4 deg.(6) Timing Belt Kits monitors and orchestrates the operation

monitors and orchestrates the operation of standard “conventional” modifications such as less restrictive air intakes

Joints don't come any bigger ortougher than this one

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SPC Performance AL SHIMS 4X6.5X4 deg.(6) Timing Belt Kits monitors and orchestrates the operationThese economical over the road heavy duty truck axle shims are our lowest cost option. With average compression strength and hardness these shims are available in a large variety of sizes and offer the technician a cost effective means to correct caster o