I created this to give a stack AND reach increase. Other, straight stem spacers with no forward offset actually bring the bars closer towards you due to the head angle - not ideal when you're trying to create a more spacious cockpit!
7075-T6 Aluminium, hard black anodized
M6 Stainless Hardware supplied
12mm rise, 12mm forward offset giving:
+16mm stack, +5mm reach when paired with a 63.5 degree head angle.