Chain Tensioner Roller for 49cc/66cc/80cc Motorized Bicycles – Pack of 2, 9mm Inner Diameter, ABS + Metal Material

⚙️ General Description: A pair of high-strength chain tensioners for motorized bicycles — ideal for 49cc, 66cc, and 80cc models. Designed to ensure consistent chain tension, they reduce wear, improve riding comfort, and guarantee smooth operation. Perfect for discerning DIYers looking for a reliable, quick-to-install, and durable solution. 📊 Technical Specifications: Type: Chain tensioner (pulley) Material: Reinforced ABS + metal Installation inner diameter: 9 mm (0.35 in) Quantity: 1 pair (2 units) Compatibility: 49cc / 66cc / 80cc motorized bicycles — check compatibility before purchase 🔧 Installation: Intuitive installation without special tools. Direct replacement for damaged original parts. Quick installation thanks to the standard 9 mm diameter — no adjustments or drilling required. 🚴 Use: Used on the e-bike's drivetrain, this pair of rollers maintains optimal chain tension, even in varying conditions. The result: less vibration, smoother acceleration, and a quieter, more comfortable ride. ℹ️ Other information: This kit is an essential accessory for maintaining or improving the performance of your e-bike. Its robust construction resists deformation and repeated impacts. No batteries or electronic components — just reliable, proven mechanics.