Osymetric Outer Chainring For Shimano / Sram 4 Bolt
These are the chosen chainrings of the 2012, 2013 and 2015 Tour De France winners. If you wish to pedal smoother with more fluidity and less fatigue then you should be using these chainrings. Scientifically proven technology that enables athletes to ride harder, longer and faster with less fatigue.
How do they work? The Osymetric chainrings have been designed to reduce dead spots, offering a smoother more “naturally round” pedaling. Dead spots are increased on round chainrings, spurring the rider to cross them quicker. The pedaling frequency becomes higher leading to more fatigue. Thanks to the reduction of dead spots, Osymetric chainrings allow a natural pedaling frequency and therefore the use of a bigger gear ( 2 extra teeth on the chainring ).This leads to a decrease of 10% lactic acid reduction and a power gain of 10% at threshold.
Osymetric Outer Chainring For Shimano/Sram 4 Bolt is compatible with four bolt 110 Bcd FSA and Stronglight chainsets 10 and 11 speed. Osymetric chainrings are unique because they are not an oval shape as other existing products and the position of each tooth has been studied specifically in relation with the force of the riders leg at this specific position. The chainrings varying diameter alters the effective gear ratio through out the pedal stroke, producing a higher gear on the downstroke when the rider has more power and then reducing the gear on the upstroke.
Assembly of these rings is the same as standard round rings, no need to extend chain.
Osymetric Outer Chainring For Shimano/Sram 4 Bolt Features And Benefits
- UCI Legal
- Less fatigue
- Up to 3 % More Speed
- Osymetric Unique Curve
- 11/10 Speed Compatible
- Decrease of 10% lactic acid
- Better and more fluid pedaling
- Black Anodized 7075 Aluminum Alloy
- Compatible: Shimano / FSA / Stronglight /Sram
- Steel Shift Pins and ramps for crisper shifting
- Patented Design to Enhance Pedal Stroke Efficiency
- Non-circular plate for a power gain of 10% + acceleration