SunRace M400 8Speed 12-32T
Smooth Steps & Rugged Durability.
The SunRace M400 is designed as a high-quality replacement for Shimano or Sram 8Speed systems. Featuring Super Fluid Drive™ technology, the tooth profiles are engineered with specific shift ramps and chamfers that allow the chain to move effortlessly across the cluster. The 12-32T range is particularly popular for riders who want a slightly "faster" high gear than a mountain bike cassette but still need a generous 32-tooth climbing gear for those inevitable steep urban inclines.
Why the M400 is the Smart 8Speed Choice:
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Optimized 12-32T Gearing: By starting with a 12T cog, you get a smoother transition into your higher speeds, while the 32T "low gear" provides plenty of mechanical advantage for climbing with groceries or touring gear.
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Super Fluid Drive™ Technology: SunRace’s proprietary engineering ensures that shifting remains crisp and predictable. The cogs are designed to "catch" the chain quickly, reducing drivetrain noise and hesitation.
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High-Tensile Steel Construction: Built for the long haul. Every cog is stamped from high-strength steel and finished with a Nickel-Chrome plating to resist corrosion and shrug off road salt and rain.
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Lightweight Polymer Spacers: High-quality polymer spacers keep the weight down to approximately 330g without sacrificing the structural integrity needed for high-torque pedaling.
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Universal HG Compatibility: Fits any standard Shimano or Sram 8/9/10/11Speed HG (HyperGlide) freehub body, making it a "drop-in" upgrade for almost any 8Speed bike.
Technical Specifications:
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Speed: 8Speed
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Gearing: 12-32T (12, 14, 16, 18, 21, 24, 28, 32)
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Freehub Type: Standard Shimano/Sram HG
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Material: High-Tensile Steel
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Weight: ~330g
The Alegro Perspective: We call the M400 the "commuter's hero." It’s incredibly rare to find an 8Speed cassette that shifts this cleanly for such a reasonable price. If you are refurbishing an older hybrid or road bike and want that "new bike" shifting feel without a full drivetrain overhaul, the M400 is the most effective part you can swap.
Consistent Cadence. All-Weather Durability. Refresh your Drivetrain with SunRace.