When upgrading your drivetrain, the chainring plays a crucial role in performance and overall bike weight. The Crescent Chainring by SUMC is designed with lightweight engineering, durability, and smooth shifting in mind—making it a top pick for weight-conscious riders and performance cyclists.
Three Models Available
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S12PRO: Solid design, maximum durability, perfect for long-distance and training.
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S12ELPRO: Semi-hollow build, balancing weight and strength.
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S12SLPRO: Full hollow, ultra-light at only ~262g, perfect for weight weenies.
👉 Compare all options here: Crescent Chainring Collection.
Why Choose Crescent Chainring?
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Shimano & SRAM compatible — easy and worry-free installation.
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Lightweight performance — improved climbing and sprinting efficiency.
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Smooth shifting — quieter, more reliable drivetrain.
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Great value — a performance upgrade without breaking the bank.
Crescent Chainring FAQ
❓1. Is Crescent Chainring compatible with Shimano & SRAM?
Yes, the Crescent Chainring is fully compatible with Shimano and SRAM 12-speed systems, suitable for both road and MTB setups.
❓2. How does it compare to stock chainrings?
The Crescent Chainring offers lighter weight and smoother shifting compared to stock chainrings. The full hollow S12SLPRO is only ~262g, making it ideal for weight weenies.
❓3. What riding scenarios is it best for?
Whether road racing, mountain biking, or folding bike commuting, the Crescent Chainring ensures efficient power transfer and durability.
❓4. Which versions are available?
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S12PRO: Solid, durable build.
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S12ELPRO: Semi-hollow, balanced strength and weight.
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S12SLPRO: Full hollow, ultra-light at ~262g.
❓5. Is it suitable for weight weenies?
Absolutely! Especially the S12SLPRO, which weighs only ~262g, making it a must-have for cyclists chasing ultimate lightweight builds.

