r3pro Piston Release Tool for Shimano 4 Piston Brakes

Designed and registered in the UK, the r3pro Piston Release Tool was the first of its kind — precision-engineered for riders who won't compromise on their brake service tools.

Seized pistons kill brake feel and performance. This tool slots cleanly into the caliper and applies even, controlled pressure exactly where it's needed — no improvised tools, no scratched pistons, no frustration.

Compatible Calipers

• Shimano XTR BR-M9120
• Shimano Saint BR-M820
• Shimano Zee BR-M640
• Shimano BR-M8120
• Shimano XT BR-M8020
• Shimano BR-M7120
• Shimano BR-M6120
• Shimano BR-MT520

Important Notes

• This tool is for releasing seized pistons — not for piston retraction.
• Ensure pistons are fully retracted before use for best results.

Tool Bundle Option

Select the Tool Bundle variant to add a matching r3pro Caliper Alignment Tool and Bleed Block Spacer Tool — everything you need for a full Shimano brake service in one order, at a saving versus buying separately.

Certificate of Registration for a UK Design — Design number: 6343177