Twinring™ rear sprocket - R 520 49T BL SC Twin

The inner ring is manufactured from the same high-strength 7075 T-6 Ultralight™ aluminium used in the standard Renthal ring.
The outer ring is manufactured from chemically nickel-plated steel for maximum durability and designed with the minimum amount of material possible to keep weight down
The outer ring expands at 200°C and is then fitted onto the inner ring; this interference fit, combined with the wavy pattern, ensures a permanent bond between both components for the entire service life of the crown.
Flat Allen fixing screws add more resistance to the crown against lateral impacts and eliminate contact with the chain guide
Self-cleaning mud slots between each tooth prevent dirt buildup, reduce wear and sprocket weight.
Three times longer life than standard crowns manufactured entirely in aluminium, whilst being much lighter than crowns manufactured entirely in steel



Specifications


Brand
RENTHAL


Supplier reference
1500-520-49GPBU


Colour/finish
Blue


Material
Aluminium 7075-T6


Model
Twinring


Number of teeth
49


Product name
Sprocket


Mounting position
Rear


Chain Size
520


Type
Transmission


Units
Unit