Caliper Rebuild Kit A4Genuine Hayes brake caliper rebuild kit for Dominion A4 Get your Hayes Dominion A4 brake system back to its original condition with this complete and authentic rebuild kit. It includes all the essential seals, rings, and pistons needed for a thorough overhaul of your Hayes brake caliper. Requires 1 kit per brake.

a hallmark of Birzman's innovative approach

The locks are supplied with four identical keys

Maximum security Stronghold Integrated Chain Lock

cable-free setup with seamless integration

including a chain tool

with bombproof construction and practical features that make them a reliable choice for any mountain biking adventure

Brass and alloy internals

E-Bike thick thin chainring for maximum chain retention and durability

DSD-4 Derailleur Screwdriver

- Labyrinth double-contact sealing effectively shuts out water and dirt

Chainrings: 30t

Hope Fortus 30W Pro 5 Orange Front Wheel