SUMC 12 SPEED CHAIN BLACK / PINK

Engineered for competitive riders and weight weenies alike, the SUMC 12-Speed Hollow Pin Chain delivers pro-level performance paired with vibrant, custom aesthetics. Every single inner plate, outer plate, and pin is precision-hollowed to significantly cut down on rotating mass, allowing for quicker acceleration and easier climbing without compromising the overall tensile strength of the chain.

The chain's premium Diamond Coating finish provides high surface hardness and exceptional rust resistance, which dramatically reduces friction and minimises chain stretch over thousands of kilometres. Featuring SUMC's advanced double "X" bridge shape on the outer plates, it ensures exceptionally quiet, rapid, and precise gear transitions across your entire cassette, even when shifting under heavy pedalling loads.

Designed for maximum longevity in harsh trail or road environments, the plates undergo a specialised DCC (double eXtreme Stretch Proof) treatment. This advanced process helps repel sand, mud, and grit from entering the internal chain bearings, keeping your drivetrain running efficiently and quietly in all weather conditions.

Key Features

• Full Hollow Construction: Hollow pins, inner plates, and outer plates significantly reduce rotating mass to shave off critical grams.

• Diamond Coating & DCC Treatment: Premium surface coating provides high hardness, low friction, and extreme resistance against sand and grit wear.

• Double "X" Bridge Design: Precision-engineered outer plates that facilitate faster, smoother, and quieter shifting across the cassette.

Specifications

• Speed Compatibility: 12-Speed

• Length: 126 Links (includes missing link master connector)

• Weight: ~253g

Why This IS For You

✅ Premium Lightweight Performance: Weighing in at only 253g, it is an excellent upgrade for riders looking to reduce bike weight for racing and climbing.

✅ Extreme Durability: High-alloy steel composition combined with a mud-shedding design ensures a long lifespan with minimal chain stretch.

✅ Striking Two-Tone Aesthetics: The contrast black and pink finish adds a vibrant, high-end custom look to your road or mountain bike setup.

Why This May NOT Be For You

❌ Premium Price Point: The complex full-hollow manufacturing and advanced diamond coatings make it more expensive than standard solid-plate chains.

❌ Requires Attentive Maintenance: The hollow slots can trap dirt if neglected, requiring regular cleaning to maintain its premium shifting efficiency.

❌ Drivetrain Limitations: Built exclusively for 12-speed setups; it cannot be used on 10-speed, 11-speed, or newer 13-speed groupsets.

BFC PRO TIP

Because this chain features weight-saving cutouts, grit can occasionally collect in the hollow slots during muddy or dusty rides. Avoid using harsh, acid-based cleaners that can degrade the pink accent finish. Instead, use a soft-bristled brush with a dedicated bike drivetrain cleaner to easily clear the hollow windows, dry thoroughly, and apply a high-quality wax or ceramic lubricant to keep it running silently!