15T 16T 18T Single Speed Cogs Conversion Kit For Multi Speed Bikes To Dirt Jump BMX Aluminum Cassette With Spacer And Locking Ring 9mm Thick Base For Beefed Up Stable Chain Retention

Convert Multi-Speed Bikes to Single Speed with Aluminum Cogs
✔️ 15T 16T 18T cogs 9mm base one piece 7075 aluminum 66g weight

This single speed conversion kit turns multi speed bikes into reliable setups for dirt jump and BMX riding where stable chain retention matters most.

✅ 9mm thick base spreads stress evenly on freehub
✅ One piece 7075 aluminum alloy weighs just 66g
✅ Extra tall narrow wide teeth hold chain under load
✅ Works with Shimano Hyperglide freehubs and 7 to 12 speed chains
✅ Includes 5mm 7mm and 12mm spacers for custom fit

💡 How does tooth profile design affect chain security on single speed setups? Single speed conversion kits rely on smart tooth shapes to keep the chain planted without extra tensioners. A narrow wide pattern grabs links on both sides during hard riding. Extra tall teeth add extra grip even when the bike hits rough jumps. One piece construction cuts weight while boosting overall strength for daily use.