ethirteen’s new direct mount espec chainrings use their new M3 narrow-wide tooth profile, reducing weight without sacrificing chain-retention, making the SL and UL chainrings lighter and more stylish than their predecessors. These ones are designed to work with Bosch motor configurations.
Features 
• Part Numbers: 34T: CR4UPA-100, 36T: CR4UPA-101, 38T: CR4UPA-102
• Features: Lightweight and durable design, minimal aesthetics, and updated M3 tooth profile.
• Material: 7050 Aluminium
• Mount: QuickConnect™
• Teeth: 34t, 36t, 38t
• Weight: 34T: 117g, 36T: 148g, 38T: 174
Specifications
No specifications found
Bosch E*thirteen Chainring E*spec Aluminum Direct Mount 38t Bosch Cx Gen4 Black Cr4upa-102
Price
$139.95
Product information
Description
ethirteen’s new direct mount espec chainrings use their new M3 narrow-wide tooth profile, reducing weight without sacrificing chain-retention, making the SL and UL chainrings lighter and more stylish than their predecessors. These ones are designed to work with Bosch motor configurations.
Features 
• Part Numbers: 34T: CR4UPA-100, 36T: CR4UPA-101, 38T: CR4UPA-102