Brake pistons endure extreme pressure during every ride, making regular inspection essential for safe braking performance. When wear becomes visible, replacement restores your brake system to full effectiveness, ensuring reliable stopping power for your next adventure. HOPE stainless steel pistons and inserts are engineered for durability and precision, delivering the dependable performance serious cyclists demand. Keep your brakes in peak condition with this quality replacement component. Specification Material: Stainless steel, phenolic plastic Diameter: 16 mm (Small Piston) 18mm (Large Piston ) Brake compatibility: Tech 4 E4 / Tech 4 V4 Brake fluid compatibility: DOT 5.1 Colour: black-silver Weight: Approx> 7g Contents 1 x Hope Stainless Hybrid Piston (Phenolic Insert) We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.