Professional 420 Chain 155mm 37T Rear 17T Front Sprocket Universal for 50cc to 125cc Dirt Bikes, Mini Bikes, ATVs, Go-Karts – High Strength, DIY, Workshop, Construction, Installation

Features:1.Wide Application: The 420 front and rear chain drive sprocket kit is specially designed to fit 50cc to 125cc dirt bikes, mini bikes, ATVs, and 4-wheel go-karts.
2.Sprocket Size: This sprocket drive gear is 0.235 inches thick and has 17 teeth.The center mounting holes are spaced 1.18 inches apart and are compatible with 17mm axle shafts.
3.Heat Treatment: To make the sprocket stronger, the sprockets are heat treated, increasing their strength and making them highly wear-resistant.
4. Speed ​​Curve Design: The sprockets also have an improved speed curve that helps reduce transmission friction, thus helping to extend chain life.
5.Ideal Replacement: This kit is designed to replace the old one in various electric sports vehicles using 420 chain sizes.The front sprocket comes with mounting screws.
Specifications:Item Type: 420 Chain Sprocket Kit
Material: 45 Steel + Alloy Steel
Rear Sprocket: 420 37T 155mm
Front Sprocket: 420 17T 73mm
Application: Complete chain and sprocket set designed to replace old, damaged ones.Original chain and sprocket sets to get your ride running smoothly again.
Compatibility:
Fits Dirt Pit Bikes and mini bikes 50, 70, 90, 110, 125cc, ATVs, Go Karts
Replacement for Coolster
br>Replacement for Apollo
Replacement for SSR and more

Package List:1 x 420 chain
1 x 155mm 37-tooth front sprocket
1 x 420 17-tooth rear sprocket
1 x mounting plate
2 x screws
Note:To avoid receiving the wrong product, please take the time to check and confirm the correct shaft, chain size, and number of teeth before ordering.