Steering Damper Knob Steering damper knob for Yamaha SR/XS $55.00 Quantity: at $55.00 each Add To Basket This steering damper knob is a great addition to your cafe racer. It replaces the steering nut on the top yoke, but its purpose is only esthetic. For Yamaha SR400, SR500 (1978-2000) and XS650. It's made of 2 parts: the lower part is made of solid stainless steel, while the upper knob is machined and polished aluminium alloy. Attention: Currently only the solid (undrilled) version is available.