Hope EVO GR4 / TR4 Bleed Block & Piston Cleaning Tool

Professional Maintenance & Bleeding Set for Hope EVO

This 3D-printed set is specifically engineered for Hope EVO brake calipers, offering a flawless, snug fit. It is the ultimate workshop companion for achieving a rock-solid lever feel and keeping your pistons moving smoothly.

The set includes two specialized blocks:

• 1. Standard Bleed Block: Keeps all four pistons perfectly flush inside the caliper body. This is ideal for bleeding your brakes without risking oil or fluid contamination on your pads.

• 2. Piston Cleaning & Mobilizing Block: Features a precise, targeted cutout for exactly one piston. By flipping and rotating the block inside the caliper, you can safely pump out, clean (e.g., with isopropyl alcohol), and lubricate each piston individually. The remaining three pistons stay securely locked in place, completely eliminating the risk of accidentally popping a piston out of its bore.

Key Features:

• Pad Retention Screw Compatible: Just remove your brake pads, slide the block in, and secure it with your original Hope pad retaining screw. It stays perfectly in place and won't fall out during maintenance.

• Tested Tolerances: The fit is absolutely spot-on, ensuring zero slop and perfect pressure distribution against the pistons.

• Print-Optimized Geometry: Designed from the ground up to print cleanly without any annoying cleanup.

Print Settings

• Material: PLA (PETG, ABS, or ASA work perfectly fine too)

• Infill: 15% (Plenty strong enough since the compression forces are distributed evenly)

• Supports: NO – the design is fully optimized to print perfectly without any support structures.