The Shimano DH-UR705-3D is a high-efficiency 6V/3W front dynamo hub designed for touring, commuting, and adventure cycling. Paired with the included SM-DH10 overvoltage protector, it delivers consistent, reliable power to your lights via a 12x100mm thru-axle platform — purpose-built for riders who demand dependable illumination mile after mile.

Highlights

• Consistent 6V/3W power output: Delivers reliable electrical output to LED headlights and taillights at a wide range of riding speeds.
• E2 terminal connector: Industry-standard dynamo connector for straightforward compatibility with dynamo-ready lighting systems.
• Centre Lock disc brake: Designed for use with Shimano Centre Lock rotors, keeping your wheel build clean and precise.
• 12x100mm thru-axle: Stiff, precise axle interface suits modern front forks on touring and gravel bikes.
• 32-hole J-bend spoke design: Versatile lacing pattern compatible with standard J-bend spokes for durable wheel builds.
• SM-DH10 overvoltage protector included: Protects connected lighting electronics from voltage spikes, particularly important at high speeds.
• Lightweight dynamo construction: Optimised internals reduce drag and weight compared to older dynamo designs.

Power for Every Ride

Whether you're commuting in low-light conditions or embarking on a loaded touring route, the DH-UR705-3D provides a self-sufficient lighting solution with no batteries to charge or replace. The hub's refined internal construction minimises dynamo drag, so your legs don't pay the price for powered lighting.

SM-DH10 Overvoltage Protector

This variant includes the SM-DH10 overvoltage protector, which safeguards your lighting system against voltage spikes at high speeds. It's an essential addition for riders using sensitive LED systems and is a requirement under some national lighting regulations for dynamo-powered setups.

Compatibility & Fit

Axle: 12x100mm thru axle. Brake interface: Centre Lock disc. Spoke holes: 32H, J-bend. Electrical output: 6V, 3W. Terminal: E2 type. Suitable for wheel sizes 26–28 inch. Not compatible with quick-release forks or 6-bolt disc rotor interfaces.