SHS Alu Piston Head Mushroom-Type (IN0410).

N0410 alu mushroom-type piston Ventilated Mushroom-Type piston head made of durable and lightweight aluminum. Designed for cylinders with a standard diameter. Features: - Made form high quality aluminum - High precision and machining - Rubber damper head for shock absorption and noise reduction - Ventilated design - Rubber o-ring - Fits all gearboxes - Comes with metal ball bearing -