NEW SOUTHWEST SPEED RACING 2" ADJUSTABLE LEAF SPRING LOWERING BLOCKS FOR 2 1/2" WIDE SPRINGS, LIGHTWEIGHT ALUMINUM, LEFT & RIGHT SIDE INCLUDED Pair Of New Southwest Speed Lowering Block, Adjustable, Aluminum, 2" (SWS Part # 550-376) * 2" Southwest Speed Adjustable Lowering Blocks Fits 2 1/2" Wide Springs Easily Adjusts Trail Or Lead Of Rear Axle Lightweight Aluminum Construction