Rock Hard 16 Tooth #40 Roller Chain Sprocket With 1-1/4 Inch Bore Keyway Heavy Duty Black Oxide Finish Induction Heat Treated Teeth For Serious Machine Shop Grind And Custom Bike Builds

16 Tooth #40 Sprocket 1-1/4 Bore Keyway Heavy Duty Steel Hardened Teeth
✔️ 16 teeth induction hardened black oxide finish 1-1/4 bore keyway

This is a single high-torque drive component essential for custom machine shop builds. It fits standard roller chains and is commonly used on mini bikes, go-karts, and agricultural equipment needing steady power transmission. You get everything required for immediate installation directly out of the box.

✅ Includes 16 tooth sprocket body for consistent rotation ✅ Comes with 2 set screws and drive key for secure mounting ✅ Black oxide coating resists rust in wet environments ✅ 1-1/4 shaft bore matches common heavy machinery shafts ✅ Hex wrench included for quick setup adjustments

💡 What makes induction hardened metal better for engine drive systems? Heat treatment strengthens the surface layer to prevent premature wear during heavy loads.

• Keeper chain tension stable across rough terrain
• Extends service life compared to untreated metal surfaces
• Handles shock vibrations common in off-road bike engines
• Minimizes lubrication requirements for longer intervals