Yamaha Axle Blocks Pewter/Silver Grey IN COLOUR Fits YZ 125 250 02-09 YZF 250 02-09 YZF 450 06-09 WR250F 02-09 WR450F 03-09 YZ-WR426F 02 CNC Machined from aircraft grade 6061 T6 Aluminum. Eliminates over extended adjustement bolts. Pewter anodized color. Reversible design allows for quick gearing changes. Use them to shift the rear wheel back (lengthening wheelbase, to adjust the handling) with out over extending the adjuster bolts.