sprocket 18 teeth black steel for single-speed fixie BMX city bikes. The sprocket functions perfectly with standard chain 1/2" x 1/8" or 3/32", providing smooth rotation and minimal noise when properly adjusted.

The steel construction with black finish ensures durability for daily use and mud, while the 18T size offers a balanced gear ratio for speed and ease in the city. Ideal for single-speed city bikes, fixies, BMX, and vintage setups where a simple and sturdy transmission is needed.

Features & Specifications

• Product type: Sprocket / rear sprocket
• Use: Single-speed / fixed gear transmission – commuting / recreation / street use
• Compatibility: Freewheel or fixed hub with standard threading, chain 1/2" x 1/8" or 3/32"
• Technologies / System: Standard sprocket for single-speed / fixie
• Material: Steel
• Number of teeth: 18
• Color: Black
• Weight: 80 g

Important compatibility note: Check the type of hub (freewheel or fixed) and threading before installation – fits standard 1.375" x 24 tpi freewheel hubs. Compatible with single-speed chain (1/8") or 3/32" – not for cassette / multi-speed freehub. Use chain whip and lockring tool for proper installation.