absoluteBLACK Premium Oval Chainrings for Shimano - Black Size:39t The Thomson X4 is the

The Thomson X4 is the leader in strength and stiffness

ensuring an optimal contact surface for gluing

MTB and e-bikes thanks to its reinforced design

40-60mm stems are available in block style only

however this solution has its own challenges as the core of the lever is where you can add the least stiffness and strength

absoluteBLACK Premium Oval Chainrings for Shimano - Black Size:39t The Thomson X4 is theabsoluteBLACK Premium Shimano 110 4 bcd compatible oval chainrings are designed for new type of Shimano cranks Dura Ace 9100, Ultegra 8000 & 105 R7000 only. These are finest oval chainrings on the market in terms of shifting, smoothness of pedaling and manufacturing quality. (They can be also retrofitted to 9000 and 6800 cranks). 10 11 12spd compatible. One of a kind special oval shape that helps you climb easier and faster (Patent Pending) Over 15%