K1 Wide Chain - Single Speed
Best durable drivetrain upgrade for BMX and track cycling enthusiasts.
Engineered for single-speed cycling, the KMC K1 Wide Chain is a robust choice for BMX and Track riders. Its substantial 1/2” x 1/8” width ensures excellent stability and superior chain retention, complemented by an Anti-Drop design and durable 'K' plate construction for high impact resistance. Built for longevity with reinforced tensile strength, this chain offers dependable performance. It conveniently includes a connector for straightforward installation, making it an ideal component for those seeking a reliable and enduring drivetrain.
$30.00
Owner Satisfaction
4.6
/ 5
Category Rank
417
/ 2104
#417 in Components
Price vs Category Average
-71%
Below average
Size
1218
/ /” x /”
Who it's for
- BMX and track riders needing maximum durability under high torque
- Cyclists seeking universal compatibility for single-speed and fixed gear builds
- Aggressive riders wanting reliable performance without dropped chains
Who should skip it
- Weight-conscious racers prioritizing the lightest possible drivetrain components
- Budget-focused riders looking for the most affordable replacement chain
- Commuters preferring low-maintenance components that rarely require cleaning
Performance breakdown
Impact Resistance
The K-plate construction handles high-torque landings and aggressive riding with ease.
Chain Retention
Anti-drop design keeps the drivetrain secure during intense BMX maneuvers.
Installation Simplicity
Included connector makes swapping or sizing the chain a quick task.
Structural Durability
Reinforced tensile strength ensures long-term reliability under heavy pedaling loads.
Drivetrain Stability
The 1/8-inch width provides a solid, wobble-free connection for single-speed setups.
Smooth Engagement
Inner plate chamfering promotes quiet, efficient power transfer across the sprocket.
Key Specs
Size
1/2” x 1/8”
Pin Width
9.5mm
Link Count
112 Links
Target Gender
Unisex
Features
- Wider 1/8” size for single speed
- Enhanced stability with inner plate chamfering
- Superior chain retention with Anti-Drop design
- High impact resistance with 'K' plate design
- Reinforced tensile strength for durability
- Ships with a connector for easy installation
What customers say
Riders in BMX, fixed gear, and cruiser communities highly value the KMC K1 Wide Chain for its exceptional durability and robust construction. Users consistently praise its resistance to stretching, which is crucial for maintaining reliable chain tension under rigorous single-speed demands. The wide profile ensures excellent compatibility with various specialized drivetrains. While acknowledged as slightly heavier than ultra-light options, this trade-off is accepted for its superior strength and longevity. Overall, the KMC K1 is viewed as the benchmark choice for riders prioritizing dependable performance and high value in the single-speed market.
Know before you buy
No, this is a single-speed specific chain. Its 1/8" width is too wide for the narrow spacing of multi-speed cassettes and derailleurs.
Yes, the K1 includes a connector link, which allows you to install or remove the chain without needing a traditional chain tool.
The chain comes with 112 links. Most riders will need to use a chain breaker tool to remove excess links to achieve the correct tension for their specific frame geometry.
The 'K' plate construction is specifically reinforced to handle the high-impact forces common in BMX and track riding, providing extra durability against snapping under heavy pedal pressure.
While no chain is immune to dropping, the Anti-Drop design features inner plate chamfering that helps the chain seat more securely on your sprocket, significantly reducing the likelihood of it slipping during aggressive riding.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$30