The SRAM RED E1 Crank Arm Assembly represents the pinnacle of carbon engineering, achieving a 29g weight reduction over its predecessor. Utilizing a refined hollow carbon process, these arms are the lightest and stiffest in SRAM's lineup, designed to maximize power transfer. To meet modern ergonomic trends, the E1 series introduces a 160mm length option, ensuring a high-performance fit for a wider range of riders.

Built for versatility and longevity, the assembly features the proven 8-bolt interface, making it compatible with both powered and non-powered AXS spiders or integrated chainrings. The DUB bottom bracket spindle provides superior bearing durability and a simplified interface across various frame standards. This crank arm assembly is the definitive choice for riders looking to shave every possible gram without sacrificing structural integrity.

Quick Facts

Feature	Specification
Material	Hollow Carbon Construction
Weight Reduction	29g lighter than previous generation
Interface	8-bolt (Compatible with AXS spiders/rings)
Spindle Type	DUB Bottom Bracket Standard
Available Lengths	160mm, 165mm, 167.5mm, 170mm, 172.5mm, 175mm
Model ID	FC-RED-ASSY-E1