The new Record rear derailleur is produced in an ultra-light technopolymer with reinforced long strand UD carbon fibre, this allows the derailleur to weigh less but maintain the same rigidity & durability. The trajectory curve has been optimized for 11-29 & 11-32 cassettes, when inspecting how the derailleur shifts, you’ll notice that the jockey wheels are incredibly close to every single sprocket giving a smooth & instant shift. This design also eliminates the need for multiple cage derailleurs, simplifying the range. A new upper body return spring has been redesigned to absorb road vibration & protects the derailleur from violent movement on the road.