Birzman Disc Brake Piston Pusher - BM20-DBPP
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Product Information
Full details
The Birzman Disc Brake Piston Pusher is an essential tool for home mechanics and professional technicians who need to streamline their hydraulic disc brake maintenance. Its standout feature is the dual-piston reset design, which simultaneously compresses both pistons with symmetry to ensure a perfectly even adjustment every time. While it excels at preventing component damage during pad swaps, users should note that its specialized design is intended primarily for standard hydraulic disc calipers and may not be compatible with non-standard or oversized aftermarket brake systems.
All features
| Model Part Number | BM20-DBPP |
|---|---|
| Brand | Birzman |
Extended Product Information
FAQs
Does this work on mechanical disc brakes?
No, this tool is specifically designed for hydraulic disc brake systems where pistons need to be reset into the caliper.
Will this work on 4-piston calipers?
The tool works best on 2-piston calipers. For 4-piston systems, you may need to reset one pair at a time or use the tool to push the pads back simultaneously.
Is it safe for ceramic pistons?
Yes, the smooth, durable panels are designed to apply even pressure without scratching or cracking ceramic or metal piston faces.
What is the weight of the tool?
The tool weighs 220g, making it lightweight enough to carry in a saddlebag or travel kit.
Do I need to remove the wheel to use it?
Yes, for best results and proper access, you should remove the wheel and the old brake pads before inserting the tool.
Can this tool bleed my brakes?
No, this tool is only for resetting pistons; it does not assist with the hydraulic fluid bleeding process.
Troubleshooting
Tool feels stiff or sticks during operation
Clean the hinge mechanism and apply a small drop of bicycle chain oil or light machine oil to the pivot point.
Pistons are not resetting flush
Ensure the tool is inserted squarely into the center of the caliper; if the system is air-locked, check for brake fluid issues before resetting.
Pros and Cons
Pros
- Simultaneous dual-piston reset saves time
- Prevents damage to sensitive brake piston surfaces
- Highly durable aluminum and steel construction
- Lightweight and compact for easy storage
- Professional-grade quality for consistent results
Cons
- Not suitable for some non-standard brake calipers
- Requires manual operation that may take practice
- Limited to piston resetting; cannot perform bleeds
Setup, Compatibility & Care
To use the tool, ensure your brake caliper is clean and free of excessive debris before insertion. Simply open the tool panels, slide them between the pads or the empty caliper space, and gently apply pressure to the handles until the pistons are fully flush with the caliper body.
Regarding compatibility, the tool is optimized for standard hydraulic disc brakes found on most mountain and road bikes. It is not designed for use on mechanical disc brake systems. Maintenance for the tool itself is minimal; keep the pivot points clean and occasionally apply a drop of light machine oil to the hinge mechanism to ensure smooth, symmetrical movement. Store in a dry environment to prevent corrosion of the steel components.