For the big pulley believers out there, CeramicSpeed is bringing its OSPW X system to the SRAM RED XPLR AXS groupset. The new OSPW X isn’t just about oversized pulleys (though it is a lot of it). It’s about tackling the unique demands of gravel riding with “next-level engineering.”
OSPW X was first introduced with SRAM Eagle Transmission. The unique ( and, dare I say, stylish) design boasts some practical features and efficiency: Active Debris Remover (ADR) and ALPHA Disc pulleys.
Gravel – Active Debris Remover (ADR)
Debris is the enemy of smooth shifting, especially on rough gravel roads. That’s where ADR steps in. This patent-pending system uses a unique dust cover anchored securely in a groove on the pulley wheel, fully sealing off the bearing. Surrounding that is a bladed groove structure designed to eject debris as the wheel spins. Keep sticks, stones, and anything else that will break your bones out of the pully wheel.
Translation? Your drivetrain stays cleaner and more efficient, with fewer hiding places for dirt and debris.
CeramicSpeed didn’t just create this in the lab—it’s been rigorously tested with its pro-off-road teams, ensuring it can handle real-world abuse.
ALPHA Disc
The OSPW X for RED XPLR AXS has 14-tooth and 20-tooth ALPHA Disc pulleys, which feature a two-piece design. The narrow-wide composite teeth enhance wear resistance and reduce noise, while the solid aluminum disc prevents debris from jamming the spokes.
Built Tough, Built Light
The OSPW X cage is crafted from reinforced molded carbon fiber, keeping weight low without compromising strength or durability. The whole system is dialed in for gravel riding, where reliability matters as much as performance.
The new OSPW X for SRAM Red XPLR AXS has a reinforced molded carbon fiber cage to achieve strength, durability, and minimal weight.
As awesome as the OSPW X sounds, you can’t ignore the price. At $669, the cage and pulleys are just $31 shy of the price for the entire SRAM RED XPLR AXS rear derailleur. But if you’ve got cash to burn and marginal gains in your sights, it will make your derailleur stand out.
Pricing and Availability
- Price: $669
- Weight: N/A
- Colors: Silver or Black with Alpha finish
Stay tuned for a full review, actual weights, and photos; we have one on the way.
