【Perfect Fit & Compatibility】

Designed for 420 chain and 20mm shaft engines, this 18T front sprocket is compatible with most 50cc, 70cc, 90cc, 110cc, 125cc, 140cc, and 160cc pit bikes, dirt bikes, ATVs, quads, and mini bikes. Fits popular models including TaoTao, Coolster, SSR, Lifan, Roketa, and Sunl Chinese power sports equipment.

【Durable High-Quality Construction】

Crafted from premium hardened steel with precision machining, this sprocket offers exceptional wear resistance, impact strength, and long-lasting performance. The smooth tooth profile reduces chain wear, ensuring reliable power transfer even under tough off-road conditions.

 【Optimal Performance Upgrade】

The 18-tooth design provides a balanced combination of acceleration and top speed, improving throttle response while maintaining reliable drivetrain efficiency. It’s an ideal replacement or upgrade for worn-out stock sprockets to restore your bike’s performance.

【Precision Machining & Easy Installation】

Features accurate tooth pitch,20mm splined bore, and pre-drilled mounting holes for a secure fit. The sprocket matches OEM specifications for easy installation without modifications, helping you save time and effort during maintenance.

 【Reliable Replacement Part】

This 420-18T front engine sprocket is a cost-effective solution for replacing damaged or worn components. It helps prevent chain slippage, reduces drivetrain noise, and extends the lifespan of your chain and rear sprocket for smoother rides.

Specification:

Color: Dark Gray

Material: Stainless Steel

Tooth Number: 18

Shaft: 17mm/20mm

Eye to eye: 33mm

Placement: Front

Fitment: Fits 420 18 tooth counter sprocket for many Chinese pit bikes and atvs like 70cc, 110cc and 125cc

for 50cc 70cc 90cc 110cc Scooter Motorcycle Bike ATV Quad Go Kart Moped

This part may also fit on 50 - 125cc dirtbike, go-karts and ATV.

This part will fit almost all of the ATV brands from China. Such as TaoTao, Buyang, Coolsport, Kazuma, Sunl, ROKETA, AIM-EX etc.

Notice : 420 14mm/17mm 17mm/20mm 10T 11T 12T will haven't Screw Holes

Description

The 420 front engine sprocket will be fit for the dirt bike,monkey bike ATV,go kart and so on.

If the diameter of the center hole is 20mm ，the distance between two holes will be 33mm.

Package: 1pcs Front Sprocket(please note this sprocket no with any gasket and screw and nut)

Note: 

1 No Instructions Included ,Professional Installation Is Highly Recommended !!!! 

2.Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 

3.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 

4.The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding.

5.please note The Compatibility Is Just For Reference. Please Compare With Your Original One Before  Purchasing! and we advise buyer check original size than compare with our item size before Purchasing .