Choosing the right sprocket can dramatically affect acceleration, top speed, and overall ride feel for dirt bikes, ATVs, and pit bikes. This guide highlights five reliable sprocket options across front and rear configurations, with compatibility notes for common 50cc–190cc engines. Each choice emphasizes durability, fitment, and ease of installation to help riders optimize power transfer on trails, tracks, and off-road adventures.
| Product | Mounting | Notes | |
|---|---|---|---|
| 41 Teeth 420 Rear Sprocket (76mm center) | 41T | 76mm center hole | Includes 4x M8 bolts; fits many Chinese 50–150cc bikes |
| Windance 35T Rear Sprocket | 35T | 76mm center hole | Cast iron construction; suitable for a wide range of 420 chain systems |
| MRELC 120 Links Chain & 35T Sprocket Set | 35T rear, 120-link chain | 76mm rear sprocket; complete drivetrain kit | High compatibility with 50–170cc models; includes front and rear sprockets |
| MWMNUN 58 Teeth Rear Sprocket | 58T | Center holes: 3; shaft fit 29mm | #35 chain compatibility; robust for go-karts and dirt bikes |
| HIAORS 16T Front Sprocket, 428 Chain | 16T | 17mm mounting hole; 30mm eye-to-eye | Front sprocket; pairs with 428 chain systems for performance tuning |
Note: When selecting a sprocket, verify chain type (420 vs 428), teeth count, and mounting hole diameter to ensure proper fit with your bike’s chain and crank setup. The following sections dive into each option’s specifics and best-fit scenarios.
41 Teeth Rear Sprocket With Bolts
The 41-tooth rear sprocket is designed for 420 chain systems and includes four M8 bolts for a straightforward installation. With a 76mm center hole and roughly 170mm diameter, this cog fits a broad range of Chinese-made 50cc to 150cc dirt bikes, pit bikes, ATVs, and quads. Its 17cm sprocket diameter provides a balanced gear ratio for trails requiring reliable mid-range torque. This option suits riders seeking increased acceleration without sacrificing too much top speed.
P1Tools Sprocket Bolt And Nut Kit
This kit is not a sprocket itself but a bolt-and-nut package intended to secure sprockets more effectively. It includes six chrome-plated M8 bolts and locking nut hardware designed to resist corrosion and maintain secure engagement under load. The kit’s anti-corrosion finish helps prevent loosening in off-road conditions, making it a solid upgrade for riders who frequently replace or upgrade sprockets and want locking reliability during long dirt rides.
Windance 35T 76mm Rear Sprocket
The Windance rear sprocket is a 35-tooth option crafted from high-hardness cast iron and designed for a 420 chain setup. With a 76mm center hole, this sprocket works with many Chinese dirt bikes, scooters, ATVs, and mini bikes. It’s positioned as a durable choice for riders seeking a balance of longevity and performance, particularly suitable for Regular trail riding and entry-level racing where consistent engagement matters.
MRELC 420 Chain And 35T Sprocket Set
This comprehensive drivetrain upgrade includes a 120-link 420 chain and a 35-tooth rear sprocket with a 76mm inside diameter. The set is tailored for a wide engine range from 50cc to 170cc and fits many dirt bikes, ATVs, go-karts, and mini bikes. The chain is described as heavy-duty and corrosion-resistant, with a master link to adjust length easily. The included front and rear sprockets ensure a cohesive power transfer upgrade for riders pursuing stronger take-off and reliability on rugged terrains.
MWMNUN 58 Teeth Rear Sprocket
The MWMNUN rear sprocket provides 58 teeth for a higher gear ratio, typically paired with #35 chain. Designed for dirt bikes, go-karts, and ATVs, it features a 3-hole mounting pattern and a 29mm shaft compatibility. This option is suited for riders seeking more top-end speed and smoother highway-style momentum on smoother tracks or longer stretches where acceleration off-road remains robust.
HIAORS 16T Front Sprocket (428 Chain)
This HIAORS front sprocket has 16 teeth designed for 428 chain systems in 50cc–160cc Chinese dirt bikes. With a 17mm mounting hole and a 30mm eye-to-eye measurement, it is a practical option for builders seeking increased mid-range torque and improved throttle response when paired with a matching rear sprocket. Front sprockets like this can fine-tune gearing for more aggressive acceleration off idle on technical trails.
Buyer’s Guide: Key Considerations For Dirt Bike Sprockets
- Chain compatibility: Ensure the sprocket matches your chain type (420 vs 428) and pitch. Mismatched chains wear quickly and can fail under load.
- Tooth count and gearing: More teeth on the rear sprocket increases top speed but reduces low-end torque; fewer teeth do the opposite. Front sprocket changes have a complementary effect and are often used to fine-tune gearing across terrain types.
- Center hole diameter: Verify the center hole diameter (e.g., 76mm). An exact fit prevents misalignment and wear on the crankshaft and hub.
- Material and durability: Cast iron and stainless steel options offer longevity and corrosion resistance in off-road environments. Consider rider weight, terrain, and maintenance frequency.
- Installation ease: Kits with bolts, nuts, or master links simplify installation and reduce the risk of loosening under vibration.
- Whole drivetrain kits: Some options come as complete sets (chain + sprockets) for a cohesive upgrade, which can simplify compatibility and installation, especially for beginners.
- Intended use: For trail riding and go-kart use, prioritize reliability and torque; for open tracks or smoother dirt surfaces, prioritize gearing for higher top speed.
Across these selections, riders gain varied gearing profiles to match their preferred riding style, engine displacement, and terrain. For a balanced upgrade, consider a complete set (chain and rear sprocket) to ensure precise fitment and optimal chain engagement. Front sprockets provide additional torque tuning for technical sections, while larger rear sprockets emphasize top-end speed on straightaways.