What Our Gearhead(R) Experts Are Saying: "For my gravel bike, the Rival E1 Flattop Chain hits the sweet spot. It's durable, shifts quietly, and the Flattop design not only looks clean but adds strength. I've been surprised how well it holds up, even on mixed terrain and long days."When every gram matters but durability still takes priority, we run the SRAM Rival E1 Flattop Chain. With a narrow Flattop profile that sheds weight and boosts strength, it's the perfect pairing for high-mileage training or mixed-surface adventures. Whether we're chasing road miles or exploring gravel routes, this chain stays quiet, efficient, and ready to go the distance. SRAM trims grams with outer link cutouts while the Hard Chrome inner plates provide the durability we expect from a workhorse drivetrain. Compatible with both 12-speed road and 13-speed XPLR AXS setups, and e-bike approved, the Rival E1 Flattop Chain is our go-to for reliable shifts across the drop-bar spectrum. And with the included PowerLock, install is a breeze.