The mission is always to make the impossible reality, reliable and accessible. SP’s team of engineers set out two years ago on what was then an arguably impossible mission.

Every minor detail is as perfect as technically possible. Yes, it is PD-8X. We are honored to present you with an excellent hub dynamo…    TOP

Specification

8X Series Dynamo Hub

Break the constrain and create the best

The DNA of the PD-8X is SP’s deep philosophical commitment to unrelenting technological evolution in every aspect of hub dynamo conceptualization, design and production. Its expression can be found in a hub shell created via painstaking CAD simulations to optimize structural rigidity while minimizing material input.

Attention to good design is on display in surface treatments at once technical and yet elegant. At the core of the PD-8X is SP intelligent dynamo engineering, which has resulted in a dynamo mechanism with watch like precision. It is simply the most technically advanced hub dynamo power management solution available anywhere today. A sophisticated precision instrument matched to a comely visage, the PD-8X is hub dynamo updated, redefined and refined.    TOP

Enough is of course never enough

6 Bolt Disc Brake

From promise to perfect accomplishment

Technology should make life simpler. This innovative hub was devised to render a clean and pure silhouette, attain a low weight and yet demanded a sturdy construction. The hub body was engineered based on two hub shells that rely on an intelligent joining construction. This meticulous design enables the hub to withstand the hefty stresses produced by disc brakes, while preserving a simple, clean and pure appearance.
The combination with special shiny and matt appearance treatments creates the gorgeous and fine texture on 8X. This is for personal, stylish and purpose-built bikes.    TOP

Centerlock Disc Brake

Far more than just another excellent dynamo hub

To improve the attractiveness of our hub dynamos to a broader audience, we have developed a centerlock version of our 8X series hub dynamo. The PL-8X is ideal for users of centerlock disc brakes and is produced under official license from Shimano. The heart of the PL-8X is the unique dynamo rated 78% efficiency at 15km/h. Not only powerful … the PL-8X is also parsimonious with your physical exertions. Consonant with our design philosophy, its form is pure, simple and aerodynamic. At 468 grams, it is also the lightest QR15 centerlock dynamo hub available anywhere.    TOP

Enjoy 8X Series

Keep Speeding/ Keep Powering

Riding is simple. Technology makes riding simpler. SP hubs dynamos bring safety, convenience, comfort and the highest performance for riders. SP hub dynamos represent the best combination of technical achievements to meet the fundamental demands of a hub dynamo i.e. light weight, small size and high efficiency. These hubs are premium products designed and engineered for trekking bikes, city bikes, commuter bikes, folding bikes, electric bikes and purpose built bikes. SP hub dynamos offer free and clean power for lighting while enhancing both safety and convenience.

Riding is easy and enjoyable. Electronic devices make riding more enjoyable and convenient by offering music and GPS functionality from mobile phones. Add an AC/DC converter to a dynamo and you get free and green power from your hub dynamo to charge your electronic devices. Enjoy technology and have fun doing it.

SP not only seeks to become No. 1 in specifications, but also intends to closely monitor the quality of every single dynamo so as to ensure every dynamo is durable and reliable.
This strong commitment has been demonstrated through testing races. For instance, the Tour Divide, which is one of the most difficult races, begins in Banff, Canada, and finishes in Antelope Wells, New Mexico. It is about 2700 miles and 200,000 vertical feet. The course is a mixture of fire trails, forestry roads and dirt tracks with some parts involving bitumen as well. Under these conditions, more and more great racers at Tour Divide have put SP on their bikes; for example, Mike Hall (No. 1 position in 2013), Jesse Carlsson (No.2 position in 2013) and Jefe Branham (No.1 position in 2014). They are all our heroes and members of the SP family.

It is our belief that actual usage would always reflect achievements in technology. Enjoy SP comfort and ride like a champion!    TOP

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Converter axle for 8X

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Perfect integration for cutting edge tech and prospective ideas
Original SP evolution philosophy

 

 

 

 

 

 

 

ー The acme of perfection!! ー
The PD-8X is the union of a precision 6V3W dynamo with the modern 15mm thru-axle(6 bolt or centerlock) disc specification …and the new acme of dynamo technology for “Xtreme” use. It is perfected integration of “bleeding edge” technology and muscular aesthetics. Yet the ultimate attainment of 8X remains its superior mechanical performance. Not only the most efficient in its class, the 8X is also the lightest in weight. With premium surface treatment and design, the 8X is gorgeous in motion and striking at standstill.

The 8X did not take industry standards at the basis for design. It sought to surpass them to the extent possible in every respect. Not stopping at slipping a 15mm thru-axle into a tested hub dynamo design, the 8X incorporates inter alia increased bearing diameters for added mechanical strength and expanded flange distances for more resilient wheel builds. It is our pleasure to present the 8X to you.

 

 

 

 

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8X DNA

8X DNA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The acme of perfection

 

 

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Xtreme Dynamo Hub

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Only add a converter axle, you can put 8X dynamo on both QR15 and 9mm QR folk. The 8X is ideal for QR15. For extra value, we provide a converter axle that adapts it from QR15 to standard 9mm QR fork.    TOP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Bearing

The 8X Series dynamo hubs are suitable for cross country mountain biking, but SP cautions that severe riding conditions be avoided with the 8X series hub dynamos. The 8X series hub dynamos cautions against their use for extreme downhill or severe conditions applications.

The QR15 thru axle specification for suspension forks imposes a design constraint requiring compatible hubs to employ thinner bearings than standard hubs.

This is due to the fact that the 15mm inner diameter of its hollow axle together with the 6 bolt disc brake specification simultaneously constrain both the inner and outer diameters of bearings that can be used in 8X hubs. This thickness is necessarily smaller than that for standard 9mm hub axles. The resulting thinner bearing races as well as smaller individual ball bearings together that the 8X is, by design, incapable of matching the durability of our 8 Series dynamo hubs.

Additionally, unlike standard QR15 hubs, QR15 hub dynamos require electrical output to be transmitted via wires from the internal dynamo to an external connector. Though physically small, this design requirement nevertheless enlarges the inner bearing diameter and thus requiring bearing thicknesses narrower than standard QR15 hubs. Consequently, bearing thickness for QR15 dynamo hub is smaller than standard QR15 hubs.

In theory, 15mm suspensions forks together with the QR15 thru axle should be stronger than standard. However, the mechanical design limitations outlined above mean that the 8X Series dynamo hub will be less durable in practice than the 8 Series hubs. In short, where durability is more important than performance, we recommend 8 Series dynamo hubs.   TOP

 

 

 

 

 

 

Enjoy

Bearing technics