Hayes Dominion A4 SFL (Small Finger Lever) Disc Brake

Featuring Hayes's Small Finger Lever (SFL) design, this mountain bike (MTB) hydraulic disc brake delivers a secure and reliable braking feel. Its award-winning build and intuitive lever design also make it an ideal choice for riders with smaller hands or those who prefer a smaller lever. Developed for precision, this version also comes kitted out with a four-piston caliper for smooth braking control and consistency as you weave your way from trail to trail. Another highlight is this model's range of technologies that include tool-free reach adjustment. As a result, you'll benefit from the simplicity of being able to fine-tune the distance between your handlebar and the brake lever to match your riding style and personal preferences as well as the terrain.

MTB DISC BRAKE WITH FOUR-PISTON CALIPER

Dominion's master cylinder is factory tuned for the shortest dead stroke possible and a crisp bite point. The Dominion A4 caliper utilises four pistons in the most structurally rigid design possible. It features a cold-forged caliper and KingPin structural pad retention bolt that increases stiffness.

DUAL PORT BLEED SYSTEM AND DOT 5.1 FLUID

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 also features the proprietary QuickBite² system for fast and consistent burnish, when coupled with the D-Series rotor (available separately) to manage the heat with less braking noise.

The Hayes Dominion A4 SFL Brake Kit is a perfect choice of upgrade for riders with smaller hands who want to enjoy reliable braking performance on the trails.