KOLOSSOS ST OVERSIZED PULLEY WHEEL SYSTEM $325 NEW Rear derailleur $400 new The SRAM Force eTap AXS OSPW D1 Rear Derailleur is a high-performance component designed for 12-speed bicycles with a maximum 36T rear cassette. Made by SRAM, a reputable brand in the cycling industry, this rear derailleur is known for its precision and reliability. With a sleek design and a focus on aerodynamics, this product is a popular choice for competitive cyclists looking for a top-tier component to enhance their performance on the road or mountain trails. Made in Taiwan, this rear derailleur embodies quality craftsmanship and innovative technology.