Renthal Chainring SR4 - 4 Bolt 104mm BCD Size:43t the Dura-Ace R9270 Di2 system

the Dura-Ace R9270 Di2 system delivers lightning-fast shifting

Instant Drive 360 freewheel technology

Optimized tre bed for easy tire installation

contains no ammonia

If you’re a bikepacker

Renthal Chainring SR4 - 4 Bolt 104mm BCD Size:43t the Dura-Ace R9270 Di2 systemThe Renthal SR4 chainrings are legendary in their stiffness and longevity. The 5mm thick Ultralite chainring uses an I Beam section tooth support bed, for the highest possible stiffness at the lowest possible weight. CNC machined from 7075 T6 aluminium , the hard anodised surface treatment massively increases the lifespan of the chainring. Continuing the Renthal theme of offering the rider as much choice as possible, every tooth size from 32t right up