The best belt drive bike conversion kits reduce maintenance, deliver smoother torque, and simplify care compared to traditional chain drives. This guide highlights five top options for 66cc–80cc motorized bicycles and similar setups. Each pick targets different rider needs, from smooth throttle response to lower upkeep. Read on to find the kit that fits your bike, riding style, and maintenance preferences.
| Product | Brand | Best For | Notes |
|---|---|---|---|
| Belt Drive Driving Sprocket Kit for 2 Stroke 66cc 80CC Engine Motorized Bicycle | HGC | Smooth acceleration and beginners | Includes drive and rear pulleys; 5M-1350 belt |
| CUQFVAT 415 Chain to Belt Drive Conversion Kit for 2 Stroke 66cc 80cc | CUQFVAT | Low maintenance with belt drive | Converts chain to belt drive; easy upkeep |
| Drive Belt 004-9891 | Replacement for Schwinn Airdyne AD6 | TreadLife Fitness | Replacing worn belts on compatible indoor bikes | Original equipment style replacement belt |
| SHIQINHA Chain Drive Sprocket Kit For Sur-Ron and Segway X Series | SHIQINHA | Rugged electric dirt bikes with belt-to-chain considerations | Complete sprocket and chain kit; 420 chain setup |
| sthus Belt Drive No More 415 Chain For 2 Stroke 66cc 80CC Engine | sthus | Maintenance-friendly belt conversion | Includes belt drive kit and sprocket mount |
Product Sections
Belt Drive Driving Sprocket Kit for Motorized Bicycles
The kit is designed for 66cc to 80cc motorized bikes, with a drive pulley (11–12T), rear wheel pulley (50T equivalent), and a 5M-1350 belt. Best for riders seeking smoother acceleration and reduced throttle jerk compared with chain drives. It suits hobbyists upgrading standard motorized bicycles and riders prioritizing smoother power delivery. A potential limitation is the gearing arrangement that may require compatibility checks with your current rear hub.
CUQFVAT 415 Chain to Belt Drive Conversion Kit
This kit converts a 2-stroke 66cc–80cc motorized bike from chain to belt drive. It emphasizes lower maintenance and reduced dust or dirt buildup compared with chain systems. It’s best for riders who want easier upkeep and quieter operation, especially in wet or dirty riding conditions. Note that installation may require ensuring compatibility with existing sprockets and belt routing.
Drive Belt 004-9891 for Schwinn Airdyne AD6
Replacement belt designed for Schwinn Airdyne AD6 bikes but listed here for belt substitution familiarity. Best for riders replacing worn belts on compatible indoor bikes or evaluating belt alternatives before applying them to a motorized bike project. Better for a belt replacement backup; ensure your model matches before use.
SHIQINHA Chain Drive Sprocket Kit for Sur-Ron and Segway X Series
Designed for Sur-Ron electric dirt bikes, this 420 chain kit pairs a 30T front with a 13T rear sprocket for robust power transmission. Best for riders switching from belt to chain or seeking a chain-driven setup in rugged terrain. Note that belt-driven systems are more common in some motorized bikes; this kit offers a chain-focused alternative with reliable torque transfer. Expect higher maintenance than modern belt systems in wet environments.
sthus Belt Drive No More 415 Chain For 2 Stroke 66cc 80CC Engine
Sthus promotes a belt-driven alternative to traditional chains for 49cc–80cc motorized bikes. The kit includes a belt drive, a chain tensioner, and a 9-hole sprocket mount. It emphasizes low maintenance, noting that belts accumulate less dust and dirt and require less lubrication compared to chains. Best for riders prioritizing ease of maintenance and cleaner operation, with the caveat that some sprocket compatibility checks may be needed.
Buying Guide
What should I consider when choosing a belt drive kit?
Compatibility with your engine size (66cc–80cc), existing sprockets, and wheel hub spacing are essential. Check belt length and tooth counts to ensure proper gear ratios and smooth acceleration. Consider maintenance needs, weather exposure, and whether you prioritize minimal lubrication or robust torque transfer.
Is belt drive better than chain drive for my bike?
Belt drives typically offer smoother torque, quieter operation, and lower maintenance since belts do not require regular lubrication. Chains can handle higher torque in some setups but may require more frequent lubrication and tension adjustments, especially in dirty or wet conditions.
Which kit is best for a beginner?
Kits emphasizing smooth throttle response and easy installation are ideal for beginners. Look for complete kits with clear mounting hardware and straightforward belt routing. The HGC belt drive kit and the CUQFVAT kit are good starting points due to their stated smoothing benefits and straightforward components.
What are common installation considerations?
Ensure belt routing doesn’t interfere with chain stay clearance, brakes, or pedals. Confirm that front and rear sprockets align properly, and verify that the belt’s tension is correct after installation. Some kits may require minor frame or hub modifications.
What maintenance precautions help belt drives last longer?
Keep belts free from oil exposure, inspect for cracks, and avoid sharp twists. Regularly check belt tension and replace worn belts promptly. In wet or dusty environments, belt systems generally outperform chains in longevity and reliability.
FAQ
- Do belt drive kits fit all motorized bikes?
They fit many common 66cc–80cc motorized bikes, but always verify model compatibility and mounting points. - Are belt drives louder or quieter than chains?
Belt drives are typically quieter and smoother, with less vibration than chains in most conditions. - What maintenance do belt drives require?
Belts need less lubrication than chains, but regular inspection for wear or cracks is important. - Can I upgrade my existing chain drive to belt drive?
Yes, using a suitable conversion kit that matches your bike’s sprockets and frame geometry. - Will a belt drive improve acceleration consistency?
Yes, many riders report smoother, more predictable acceleration with belt drives. - Do belt drives work well in wet conditions?
Belt drives resist dirt buildup and lubrication needs, making them advantageous in wet environments compared to chains.