SP PV-8 Road Bike Dynamo Hub 32H (Rim V-Brake, 3.0 Watts), Black - Lightest, Most Efficient

SP hub dynamos are unrivaled in every sense of the word. They are more efficient, technologically advanced, simpler and lighter in weight than any competing hub dynamo by class. When lights are on, the P-8 hub dynamos achieve an incomparable efficiency of 72 percent . SP P-8 series hub dynamos are 7% more efficient than top German and Japanese rivals when measured at 15 km/h (9.3 mph), the "gold standard" specification set under the rigorous German StVZO standard for hub dynamos (See S-8 Efficiency graphs in pictures).

Perhaps more significant is that 8 Series hub dynamos have dramatically less drag when lights are off in comparison to the same top-of-the-line Japanese and even German hub dynamos. At 30 km/h (18.6 mph), the P series hub dynamos generate well over 50% less drag than the nearest Japanese rival and nearly 25% less drag than the most efficient German counterpart. Notably, they produce less total drag in comparison to competing hub dynamos at all speeds tested while also producing more power! Moreover, this efficiency gap widens considerably at speeds above 20 km/h.

In terms of weight, the rim brake (V-brake) versions of P-8 series hub dynamos are full 10 grams lighter than their nearest contenders, thus making the PV-8 not only the most efficient, but also one of the lightest hub dynamo on the planet. The disc brake versions are similarly at the top of their class in terms of lightness of weight.

SP hub dynamos come with a limited 2-year warranty for manufacturer's defects. As the official USA distributor, we are able to replace your dynamo for the duration of the warranty for a worry-free purchase. If you have any questions about this or other SP products, please contact us at your convenience for immediate response.