Full Speed Ahead Energy Modular Direct Mount Chainring - Black Inner Ring Compatibility:34T External Adjustments Rebound Damping External

External Adjustments Rebound Damping External Adjustments Lockout Threshold Eye to eye length (mm) 190 Eyelet Diameter (mm) 12

5mm Vegas Gold

This link explaining 148mm "Boost" spacing will help you decide if you need the M5 or M8

142 x 12mm and 148 x 12mm

IFP tubes pass through the inside of the IFP

Full Speed Ahead Energy Modular Direct Mount Chainring - Black Inner Ring Compatibility:34T External Adjustments Rebound Damping ExternalFull Speed Ahead's Energy Modular Direct Mount Chainrings are designed for 2x road and gravel cranksets and feature shifting ramps and stainless steel pins on outer rings. Precision CNC machined AL7075 T6 Shifting ramps and stainless steel pins on outer rings Black anodized finish Laser etched logo Compatible with Modular cranksets Tooth Count 48, 50 Round or Oval Round Material Aluminum Color Black Defined Color Black Direct Mount Type Direct Mount