Our Silver line of Shimano 110/4 bcd oval chainrings is designed for new type of Shimano cranks like Dura-Ace 9000, Ultegra 6800, 105- 5800 and others. This is a simplified version of our Premium line. Same aluminium, teeth and shifting ramps, but less material machined out on the outer side for easy maintenance and cleaning on winter training bikes. Weight is increased on these chainrings as compared to our Premium line for that reason. Silver line chainrings are a simplified version of our state-of-the-art Premium line. They use same aluminium, teeth and shifting ramp design. However they are less machined out from the front for easy maintenance and cleaning when used on winter bikes. This chainring is designed for your winter/training bike where weight is not an issue, but easiness of cleaning is.
Ovality: Optimized to each size separately.
34T- 6.5% ; 36T- 11.4%, 50/52 - 10.3% ; Timing of 108 -109.5 after TDC (top dead center) - Ideal for road climbing. Patent Pending Size (Mass +/-1g): 34T (40g), 36T (44g), 50T (156g), 52T (168g) BOLTS
For Outer chainring please order Long bolts Changing Inner chainring to oval only? use original bolts
