{"product_id":"irdrx820","title":"REAR DERAILLEUR, RD-RX820, GRX, 12-SPEED, TOP NORMAL, SHADOW PLUS DESIGN, DIRECT ATTACHMENT, W\/OT-RS900 (BLACK) 240MM X1, LONG NOSE CAP X1","description":"\u003cp\u003eWith an integrated chain stabilizer mechanism, the GRX rear derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an on\/off switch for the chain tensioner. The RD-RX820 rear derailleur is compatible with MTB cassettes with a 42T low sprocket max.* GRX 12 speed rear derailleur for double cranks* Adjustable chain stabilizer prevents chain slapping and drops* Gravel-tuned clutch tension can be toggled ON\/OFF to match the terrain* Maximum front difference: 17T* Total capacity: 42T* Low sprocket: Max. 34T\/Min. 30T* Top sprocket: 11T\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":47714568208555,"sku":"IRDRX820","price":184.99,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/0102\/5707\/files\/240318-01_1_d51238a0-2b4e-4678-b2e9-502be71e5e2c.jpg?v=1787947666","url":"https:\/\/completecycles.ca\/products\/irdrx820","provider":"Complete Cycles","version":"1.0","type":"link"}