SRT02-Q361R Ring brake planetary gear ratchet structure quick detachable road vehicle straight pull flower drum

The core selling point of this lightweight and high-strength ring brake drum is the triple combination of "planetary gear ratchet+quick release ring brake+side cover upgraded 12mm cylinder shaft". The planetary gear ratchet structure brings fast meshing and high transmission efficiency, while improving durability; The quick release ring brake is compatible with the old frame, and the 12mm cylinder shaft can be upgraded by replacing the side cover, achieving multi specification adaptation with one flower drum, significantly reducing user upgrade costs, and is highly attractive to both vehicle brands and DIY players. In terms of features, lightweight and high strength are equally emphasized. The straight pull design reduces stress concentration and improves rigidity. The planetary gear ratchet ensures dense meshing and stable output. The modular design of the side cover enhances scalability. The application scenarios cover circle brake road vehicle upgrades, Gravel gravel roads, commuting training wheelsets, and multi frame riders that require cross specification compatibility.