Sumart Brake Pads for Hayes Dominion A4

Replacement disc brake pads for Hayes Dominion A4 brakes.

Before you buy: one set does one wheel (one caliper). Match your brake to Sumart's list below; the model is usually printed on the caliper. Not sure? Email us the brake model and we'll confirm the fit before you order. Replacing front and rear? Two sets plus a bleed block gets you to free shipping at $49.

From Sumart, a tool and parts maker in Taichung, Taiwan. Ships from a US warehouse.

Why we carry it: pads are the part riders replace most, and a fair-priced set that ships from a US warehouse beats waiting on a shop order.

Details from Sumart

Confident power. Smooth control. Reliable in every condition.

Sumart Semi-Metallic Pads are precision-engineered for Hayes Dominion A4 4-piston calipers, delivering consistent braking across long descents and wet trails. The semi-metallic compound provides an effective balance of bite, modulation, and durability, making these pads a strong choice for enduro, downhill, and trail riders who want power without excessive noise or fade.

Compatibility

Fits the following 4-piston calipers:

• Hayes Dominion A4
• Hayes Dominion T4

Key Features

• Semi-Metallic Compound: Balanced blend of metallic and organic-style materials for responsive bite and quiet operation.
• Heat-Resistant Performance: Maintains control and consistency under heavy braking and long descents.
• All-Weather Reliability: Delivers confident modulation in dry, wet, and muddy conditions.
• Steel Backplate: Improves pad rigidity for even wear and a solid lever feel.
• Easy Fitment: Direct OEM replacement; includes spring and retaining clip.

Ideal For

Enduro, trail, and downhill riders who want durable, fade-resistant braking with refined modulation and minimal noise.

Additional Details

• Brand: Sumart
• Compound: Semi-Metallic
• Includes: 2 pads (1 caliper set), spring, and retaining clip