Hayes Dominion A4 Disc Brake

Description

Bringing Motorsport Tech To Your MTB

The Hayes Dominion A4 Disc Brake is a powerful, confidence-inspiring 4-piston braking system for mountain bikes.

The Dominion A4 caliper utilizes four pistons in the most structurally rigid design possible. It features a cold-forged caliper and KingPin structural pad retention bolt that increases stiffness.

With a motorsports-inspired Two-Stroke dual port bleed system, industry-leading DOT 5.1 fluid and Kevlar hose, the hydraulic system is engineered for ultimate performance across all temperatures and easy maintenance.

Dominion A4 features the proprietary QuickBite² system for fast and consistent burnish, coupled with our D-Series rotor to manage the heat with less braking noise.

Features:

• Tool-Free Reach Adjustment
• Flip-Flop Lever Orientation
• King Pin Pad Retention
• Crosshair Caliper Alignment
• 2x Sets of Pads Included (Semi-Metallic installed and Sintered in the package)
• 310g (100cm hose and mount hardware)
• DOT 5.1 Fluid
• 2-Stroke Dual Port Bleed System
• Sealed Cartridge Bearings Lever Pivot
• 100cm Front Hose Length
• 180cm Rear Hose Length

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.