Nukeproof turbine spacer 118precision machined from high grade 6061 aluminium nukeproof turbine headset spacers are engineered to the most exacting of tolerances to cope with the demands of elite level gravity riding black with laser etched graphics turbine spacers are available in a range of sizes for perfect adjustment featuresmade from high grade 6061 aluminium fit 1 18 steerers laser etched graphicsbuy nukeproof components from chain reaction cycles the worlds largest online bike