Could Atherton Bikes’ New Pinion Gearbox Revolutionize the 2025 Downhill Season?

In a surprising twist, rumors have surfaced that Atherton Bikes might be taking a step forward by integrating a gearbox into their downhill bikes for the 2025 UCI Downhill season. Pinion could be the brand that partners with the Athertons for this prototype, as the Pinion gearbox has traditionally been seen used by smaller teams or teams outside the DH circuit.

The reported integration of the gearbox hints at a focus on durability and reliability—two major pain points for riders battling through demanding courses. Unlike traditional derailleur systems, the gearbox is sealed from the elements, reducing the risk of mechanical failure due to mud, rocks, and debris. This design also lowers the unsprung weight on the rear wheel, potentially improving suspension performance and making the bike more agile on rough terrain.

If the rumors are true, Atherton Bikes could be pioneering a new era in downhill bike design. The potential benefits include smoother, uninterrupted power transfer, a more balanced ride feel due to central weight distribution, and far fewer mechanical issues under extreme conditions.

As the 2025 UCI Downhill season approaches, all eyes will be on Atherton Bikes to see if they unveil this revolutionary setup. Could this be the future of downhill racing? Only time will tell.