The Shimano Essa CS-HG300-8 gives an 8-speed drivetrain a genuinely wide gear range, with an 11-45T spread that climbs steep pinches yet still pulls a useful top gear on the flat. It is the wide-range heart of Shimano's Essa group, built for everyday trail, gravel, trekking and commuting riders who want simple, dependable 8-speed shifting.

Highlights

• Wide 11-45T range tackles steep climbs without losing top-end speed
• Hyperglide shift ramps and tooth profiles for smooth, predictable gear changes
• Steel sprockets and lockring built to shrug off wear and weather
• Mounts to a standard HG (Hyperglide) freehub body, so no special hub required
• Runs on affordable, easy-to-find Shimano HG 6/7/8-speed chains

Wide range, simple drivetrain

The 11-13-15-18-22-27-35-45T gradation packs a big spread into just eight sprockets. You get the low gearing usually reserved for drivetrains with far more cogs, while keeping the lower cost, durability and easy maintenance that make 8-speed so practical for daily riding.

Reliable Hyperglide shifting

Shimano's Hyperglide design uses specially positioned shift ramps and shaped teeth to guide the chain cleanly between sprockets. The result is fast, quiet indexed shifting that stays consistent ride after ride.

Built to last

The sprockets and lockring are steel for long service life and resistance to wear, a sensible choice for a cassette that will see plenty of commuting, trekking and all-weather use.

Compatibility & fit

This is an 8-speed cassette with an 11-45T range. It fits a standard Shimano HG (Hyperglide) spline freehub body and is designed to run with Shimano HG 6/7/8-speed chains. Because of the 45T low sprocket, Shimano pairs it specifically with the Essa RD-U2000 rear derailleur, which is rated to handle the 45T cog. The eight sprockets are secured to the freehub with the supplied lockring.