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This Shutter Precision SD-8 dynamo front hub is designed to work with 20" Bullitt wheels (6V 3W output) or 700C / 650B / 26" wheels (6V 2.4W output) with 100mm fork spacing and 6-bolt disc brakes that accept a 9mm quick-release axle. It comes included with an M-connector (female end) to link the hub to your dynamo light.

Dynamo lighting systems are the solution for safety both day and night, no matter the weather or season. It's a combined effort of a dynamo hub that sits at the centre of a front wheel and generates power when the wheel spins. That power is then transmitted to a wired-in front and rear light that illuminate the road ahead and alert drivers behind that you're riding up ahead. And there's a huge benefit to dynamo over battery or USB-rechargeable lights: dynamo lights are permanently bolted on and useless without their hub, which makes them particularly theft-proof. They don't have batteries that wear out, are fully waterproof, and automatically turn on whenever you're riding for guaranteed light - no matter the riding conditions, come snowstorms or torrential downpours. And unlike battery lights that are moreso for being seen on the streets, dynamo lights often measure light output in LUX, which defines how far the light travels rather than its brightness - absolutely critical for headlights on nocturnal rides through potholey streets or on pitch-black unlit trails.

Why choose SP Dynamo hubs? Gone are the days of heavy hubs that drag like crazy and bottle dynamo rollers that wear out wheel rims - Shutter Precision (SP) Dynamo hubs are engineered with expert attention to detail. They are low drag - meaning that they don't hamper your wheel spinning and ensure all the energy you input goes straight to work keeping you moving - and are incredibly lightweight for a minimal weight penalty. Each one has a CNC-machined alloy body and sealed bearings for weatherproofed durability and ultimate longevity.

Not sure which dynamo hub you need for your bike? Email us at online@curbsidecycle.com and we'll get you sorted!

Need some help? Read our Dynamo Buyers Guide!
SP SD-8 Dynamo Hub
CNC-machined for a sturdy, exact build construction
Sealed bearings are weatherproof and will last for ages
Low drag means efficient pedal power transfer to the drivetrain
Lightweight construction for minimal weight penalty when adding dynamo lighting to any bike
Compatible with 20" Bullitt wheels (6V 3W output) or 700C / 650B / 26" wheels (6V 2.4W output) with 100mm fork spacing and 6-bolt disc brakes that accept a 9mm quick-release axle
Available for 36-spoke wheels
M-connector included (female end)

OUTPUT	6 volt 3 watt (20" wheel), or 6 volt 2.4 watt (700C / 650B / 26" wheel)
WHEEL SIZE	20", or 700C / 650B / 26"
FORK SPACING	100mm
BRAKE	6-bolt disc brakes
AXLE	9mm quick release skewer
SPOKE COUNT	36
COLOUR	Gloss Black
WEIGHT	375g

FREE SHIPPING ON ALL PARTS & ACCESSORIES ORDERS OVER $150*

Canada: We use UPS, Purolator, Canpar or Canada Post within Canada. All applicable Provincial Taxes are charged at checkout. Orders may take 1-2 business days to process. A tracking number will be provided by email.

USA: We use UPS, UPS Mail Innovations, or Canada Post/USPS in the USA. No US or Canadian Tax is charged at checkout and all cross-border Fees and Duties are prepaid so there are no surprises. Orders may take 1-2 business days to process. A tracking number will be provided by email.

*Does not apply to oversize items.

About SP Dynamo: SP is a group of riding enthusiasts who found their beginnings in the optical and electronic industries before finding a way to combine their work with their passion, leading to the foundation of the company. With high quality, light-weight dynamo products, SP is all about innovation and optimization, providing dynamo systems that are sleek, attractive, but most of all, high performing and functional.

Download: SP Dynamo SD-8 Technical Drawing

SP DYNAMO

SD-8 DYNAMO HUB FOR BULLITT - 100/9MM QR - 6-BOLT DISC

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