Box One Single Speed Alloy Cogs Product Overview The Box One Single Speed Alloy Cogs are lightweight 7075-T6 aluminum sprockets designed for Shimano-compatible cassette hubs. Available in 13T–18T with anodized black finish and 5mm wide inner base, they provide ultra-lightweight performance for weight-optimized single-speed BMX drivetrains. Key Features 7075-T6 Aluminum Construction – Aerospace-grade alloy provides strength with minimal weight 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 Ultra-Lightweight Design – Aluminum construction dramatically reduces rotational weight (8–18g depending on tooth count) 3/32" or 1/8" Chain Compatible – Works with both narrow and wide single-speed chain widths Anodized Black Finish – Protective coating resists corrosion and provides clean aesthetic Laser-Etched Logos – Durable branding without added weight Multiple Tooth Options – Available in 13T, 14T, 15T, 16T, 17T, or 18T for gearing flexibility Racing-Focused Design – Minimal weight ideal for competitive BMX racing builds Professional Component – Suitable for serious racers prioritizing weight reduction Technical Specifications Material: 7075-T6 aluminum alloy 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: Anodized black with 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 Weight-Optimized Racing – Ultra-lightweight aluminum ideal for competitive racing builds Single-Speed BMX – Purpose-built for high-performance 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 – Lightweight construction reduces rotational mass for sprint acceleration Gearing Options – 13T (tall gear for speed) through 18T (lower gear for acceleration) accommodate riding preferences Serious Racers – Aluminum construction for riders prioritizing every gram of weight reduction Professional Applications – Suitable for competitive and elite-level BMX racing 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 Weight Verification – Confirm cog weight in build planning for racing setups Important Notes Ships direct from manufacturer in USA; may ship separately from other orders Shimano-compatible only; not compatible with threaded freewheel hubs 7075-T6 aluminum provides strength with dramatic weight savings versus steel cogs 5mm inner base wider than standard, providing solid interface and reducing slippage Ultra-lightweight design; weights 8–18g—ideal for gram-counting racing builds 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 Anodized black finish resists corrosion and provides professional appearance Laser-etched logos provide durable branding without weight penalty Professional-grade component for serious racing and weight optimization CNC precision machining ensures consistent tooth profile and engagement 7075-T6 aluminum is aerospace-grade; maintains strength despite minimal weight Verify your hub is Shimano-compatible cassette type (not threaded freewheel style) Ideal for competitive racers prioritizing rotational weight reduction **Due to unique nature of this item, ALL sales of this product are FINAL. No Refunds or Returns**
