In terms of stiffness

・Compact design includes an integrated wireless unit

allowing for the connection of 30mm spindle cranksets to narrow 35mm diameter

An elasticated strap inside the pocket makes the jacket easy to carry around your shoulder or waist on the go

Compatible with cranks featuring an 8-bolt interface allowing installation of the Quarq Power Meter with a threaded chainring mount

sram chain red e1 flattop silver 12 13 speed Product Type_ Bottom Bracket In terms of stiffnessSRAM's RED E1 Flattop chain delivers precision engineering for modern 12 and 13 speed drivetrains. The flattop design reduces weight while maintaining exceptional strength and durability. Silver finish resists corrosion and complements contemporary groupsets. Engineered for smooth, reliable shifting across the entire cassette range, this chain maximizes power transfer and minimizes drivetrain noise. Ideal for road cyclists demanding professional grade