Shimano GRX400 MTB Brake Bleed Block Piston Spacer

Make your bicycle brake maintenance easier with this custom-designed brake bleed block (piston spacer). Specifically tailored for Shimano GRX400 calipers, but also compatible with a wide range of standard Shimano MTB brake systems.

This essential tool keeps your brake pistons securely locked in place during the bleeding process, preventing them from over-extending and ensuring a perfect, firm brake feel every time. The design includes a top hole for the retaining pin to keep the block safely secured in the caliper while you work.

Recommended Print Settings:

• Material: PETG is highly recommended! It offers excellent durability, flexibility, and much better chemical resistance to brake fluids (mineral oil) compared to standard PLA.
• Layer height: 0.20mm works perfectly.

Keep your brakes sharp and happy printing!