Heavy Hitter 520 Primary Chain Conversion for Surron Ultra Bee

The Heavy Hitter 520 Primary Chain Conversion is built for maximum performance and long-term durability, specifically designed for the Surron Ultra Bee. This upgrade is ideal for high-power setups and ensures reliable performance over time. Unlike typical 420 sprockets that require more frequent maintenance and have a shorter lifespan, our conversion features a stronger 520 chain for enhanced durability. With heavier bikes like the Light Bee experiencing chain breaks under increased power and weight, this upgrade is a must. We’ve also developed an exclusive dished rear sprocket to prevent damage to your frame caused by traditional flat sprockets. Our design maximizes clearance, ensuring your chain tension stays in spec and protects your bike from unnecessary wear. Key Features Exclusive dished sprocket for optimal clearance 520 O-ring chain included for lasting durability 7075 aluminum construction to prevent corrosion Simple installation with no shims or spacers required (OEM motors