Single-Speed Cog & Spacer Set — 16T Cog + 10×38 / 4×38 / 3×38 (10-Speed HG Freehub Only)

Product Description

Koova Single-Speed Cog & Spacer Set – Complete Conversion Kit

Convert your Koova S10 hub to a single-speed drivetrain with this precision-engineered cog and spacer set. Designed exclusively for 10-speed HG freehub bodies, this kit ensures correct fit, perfect chain line, and reliable performance for clean, minimalist single-speed builds.

Every component is CNC-machined for accuracy, providing smooth engagement, quiet operation, and long-term durability.

What’s Included

• 1 × 16T single-speed cog (hardened steel)
• 1 × 10 × 38 mm spacer
• 1 × 4 × 38 mm spacer
• 1 × 3 × 38 mm spacer
• Installation guide

Key Features

• Precision-machined – Ensures accurate fit and perfect chain line
• Durable construction – Hardened steel cog for long service life
• Lightweight design – Minimal added weight
• Simple installation – Easy to set up with basic tools
• Multiple spacers – Fine-tune chain line for your specific frame

Compatibility

✔ Koova S10 rear hubs with 10-speed HG freehub
✔ Standard single-speed chains (1/8" or 3/32")
✔ Most single-speed frames

❌ Not compatible with:

• 11-speed or 12-speed HG freehubs
• Micro Spline
• XD freehubs

Why Choose Single-Speed?

• Simplicity and reliability
• Lower maintenance
• Lighter overall drivetrain
• Direct and efficient power transfer
• Ideal for urban riding, commuting, and minimalist builds

Installation Tips

Use the included spacers to achieve the correct chain line. Start with the 10 mm spacer and adjust using the 4 mm and 3 mm spacers as needed. A proper chain line ensures smooth, quiet operation and extends drivetrain life.

Perfect for: Urban riders, commuters, single-speed enthusiasts, and anyone seeking a clean, reliable drivetrain.

Build your perfect single-speed setup — designed specifically for 10-speed HG freehubs. Order now with fast worldwide delivery.