Box One Single Speed Chromo Cogs

Box One Single Speed Chromo Cogs

Product Overview

The Box One Single Speed Chromo Cogs are CNC-machined chromoly sprockets designed for Shimano-compatible cassette hubs. Available in 13T–18T with heat-treated construction and 5mm wide inner base, they provide durable, lightweight performance for single-speed BMX drivetrains.

Key Features

• CNC-Machined Chromoly Construction – Heat-treated chrome-molybdenum provides superior durability and wear resistance
• Shimano-Compatible Driver – Works with standard Shimano cassette hub shells for straightforward installation
• 5mm Wide Inner Base – Thicker base interface provides solid engagement with cassette body; resists slippage
• Heat-Treated Steel – Professional heat-treatment process increases hardness and extends cog lifespan
• 3/32" or 1/8" Chain Compatible – Works with both narrow and wide single-speed chain widths
• Heavy-Duty Construction – Engineered to withstand high single-speed tension and aggressive riding
• Lightweight Design – Minimal material usage reduces rotational weight (8–18g depending on tooth count)
• Laser-Etched Logos – Durable branding without added weight
• Multiple Tooth Options – Available in 13T, 14T, 15T, 16T, 17T, or 18T for gearing flexibility
• Professional Racing Component – Proven durability suitable for competitive BMX racing

Technical Specifications

• Material: Heat-treated chromoly steel
• Driver: Shimano-compatible cassette type
• Chain compatibility: 3/32" or 1/8"
• Inner base width: 5mm
• Tooth count options: 13T, 14T, 15T, 16T, 17T, 18T
• Finish: Laser-etched logos
• Weight by tooth count:
  • 13T: 8g (0.3 oz)
  • 14T: 11g (0.4 oz)
  • 15T: 13g (0.5 oz)
  • 16T: 14g (0.8 oz)
  • 17T: 16g (0.6 oz)
  • 18T: 18g (0.65 oz)

Compatibility & Ideal Use Cases

• Shimano Cassette Hubs – Compatible with Shimano-compatible cassette hub shells; verify your hub type before ordering
• Single-Speed BMX – Purpose-built for high-tension single-speed drivetrains
• Fixed-Gear Setups – Works with fixed-gear conversion hubs using Shimano cassette interface
• Chain Width Flexibility – Compatible with both 3/32" (narrow) and 1/8" (wide) chains
• Racing Applications – Heat-treated construction resists wear under competitive racing loads
• Gearing Options – 13T (tall gear for speed) through 18T (lower gear for acceleration) accommodate riding preferences
• Weight-Optimized Builds – Lightweight design (8–18g) suitable for racing-focused setups
• All Rider Types – Suitable for beginners through professional BMX racers

Build Requirements & Compatibility

• Shimano Cassette Hub Required – Must have compatible Shimano cassette hub shell (not threaded freewheel)
• Chain Selection – Choose 3/32" or 1/8" chain width matching your drivetrain
• Tooth Count Selection – Select based on desired gearing: smaller teeth (13T–14T) for speed, larger teeth (17T–18T) for acceleration
• Proper Installation – Slide cog onto cassette hub and secure with locking ring or cassette locknut
• Chain Alignment – Verify chain runs true and doesn't rub on frame or wheel

Important Notes

• Ships direct from manufacturer in USA; may ship separately from other orders
• Shimano-compatible only; not compatible with threaded freewheel hubs
• Heat-treated chromoly provides superior durability compared to standard steel
• 5mm inner base wider than standard, providing solid interface and reducing slippage
• Tooth count selection critical: 13T–15T for speed, 16T–17T balanced, 18T for acceleration
• Compatible with both 3/32" and 1/8" chain widths; verify your chain width before purchasing
• Lightweight design ideal for racing builds; weights 8–18g depending on tooth count
• Laser-etched logos provide durable branding without weight penalty
• Professional-grade component suitable for competitive racing and serious training
• CNC machining ensures precise tooth profile and consistent engagement
• Heat treatment increases hardness; resists wear through extended racing use
• Verify your hub is Shimano-compatible cassette type (not threaded freewheel style)