Ceramic Speed OSPW X Pulley Wheel System - For SRAM Eagle T-Type AXS Rear Derailleur BLK Cage BLK Pulley Wheels Chainline/Hub Compatibility-141/148 Boost Hubs The Promax EX-2 English bottom

The Promax EX-2 English bottom bracket features forged and CNC machined aluminum cups dual-lip labyrinth low-friction seals and custom sealed bearings

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Reduced weight of 59 grams from the previous model

The Elite Sterzo riser block allows steering up to 34 deg while riding your rear wheel trainer to give you the most realistic indoor ride

Ceramic Speed OSPW X Pulley Wheel System - For SRAM Eagle T-Type AXS Rear Derailleur BLK Cage BLK Pulley Wheels Chainline/Hub Compatibility-141/148 Boost Hubs The Promax EX-2 English bottomProven to be the fastest pulley system, chosen by many of the worlds leading cycling teams and professional triathletes Optimized tooth designs offer 3 5 times longer life than standard OE pulleys Standard: low drag with hardened steel races and ceramic ball bearings Coated: metallic layer that covers bearing races making them 75% harder than steel. Even lower friction and highly resistant to corrosion In the box: complete upper and lower OSPW system,