Shimano Xt M770 11-34T Mountain Bike 9-Speed Cassette

What Our Gearhead® Experts Are Saying: "I still run this cassette on my backup bike—it shifts crisply every time and holds up to serious miles. The 11–34t range gives great low-end gearing, and the aluminum carrier keeps it light but stiff under power." The Deore XT CS-M770 Cassette from Shimano is a dependable workhorse for 9-speed mountain setups. Whether we’re resurrecting an old favorite trail bike or building up a durable commuter, this cassette delivers classic XT reliability with performance-focused details that still hold up today.With an 11–34t gear range and carefully spaced cogs, it balances climbing capability with efficient cadence across the flats. The aluminum carrier helps reduce weight while improving stiffness and shift response—so we’re never left missing a gear, whether grinding up fire roads or ripping through singletrack.