KMC K1 Chain — 3/32" Classic Link

Overview

The KMC K1 is a narrow 3/32" BMX chain featuring classic full links and reinforced riveting designed for durability and reliability. The 112-link standard length accommodates most BMX frame and sprocket combinations. Anti-drop design and heavy-duty construction ensure smooth power transfer and extended chain life.

Key Features

• Mushroomed riveting — Rivets are shaped and set to lock inner and outer plates securely, preventing premature wear and extending chain life
• Inner plate chamfering — Beveled inner plate edges reduce friction and weight while improving shifting performance
• Anti-drop design — Chain-stay compatibility features minimize the risk of the chain dropping during riding and tricks
• Heavy-duty structure — Reinforced plates handle high loads while maintaining reliability in racing and street conditions
• Special dynamic K configuration — KMC's engineering optimizes plate geometry for strength and reduced friction
• Classic link design — Full links only; compatible with even-numbered sprocket tooth counts without modification

Technical Specifications

• Chain size: Narrow 3/32"
• Chain width: 1/2" x 3/32" (standard BMX)
• Chain type: Classic links
• Link count: 112 links
• Construction: Mushroomed rivets, chamfered inner plates
• Features: Anti-drop design, heavy-duty structure

Compatibility & Ideal Use Cases

• Sprocket compatibility: Any BMX chainring and rear sprocket using 3/32" chain with even-numbered tooth counts
• Best for: BMX riders using standard sprocket combinations; racers and street riders seeking reliable drivetrain performance
• Ideal use: Racing, street, and general BMX riding
• Link count: 112 links suits standard BMX frame geometries; verify chain length for custom builds
• Application: Single-speed BMX bikes with standard 3/32" drivetrain

Inner plate chamferring Mushrommed riveting Anti drop design

Heavy Duty Structure Special dynamic K configuration