01FITMENT
What is a 520 sprocket?
Chain pitch, fitment, and why 520 matters for off-road bikes.
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Know the part. Choose the right setup.
Direct answers for sprocket fitment, gearing, materials, manufacturing, and trail readiness — written for riders, buyers, and the teams building the next batch.
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FIELD NOTEGeometry before guesswork
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14 articles
02GEARING
How to choose a sprocket ratio
See how front and rear tooth changes affect acceleration, traction, and speed.
Read the note03MATERIALS
SCM440 sprocket steel
A practical note on heat-treatable alloy steel for hard-wearing sprocket programs.
Read the note04MATERIALS
7075-T6 aluminium sprocket
Why aluminium rear sprockets trade wear life for lower rotating mass.
Read the note05MATERIALS
Steel vs aluminium rear sprocket
A practical comparison for riders, fleets, and race builds.
Read the note06MANUFACTURING
CNC sprocket manufacturing
How geometry, tooling, heat treatment, and inspection fit together.
Read the note07FITMENT
Motorcycle sprocket fitment
The dimensions and checks that matter before ordering or production.
Read the note08OEM
OEM sprocket manufacturing in Vietnam
What a buyer should provide for a batch or private-label sprocket program.
Read the note09TRAIL
Dirt bike trail ride drivetrain checklist
Pre-ride checks for chain slack, sprocket teeth, bolts, master link, and chain guide.
Read the note10TRAIL
Inspect chain and sprockets before a trail ride
Practical inspection steps for dirt bike and enduro riders before they leave.
Read the note11TRAIL
Sprocket wear signs for dirt bikes
What hooked teeth, noise, and chain lift usually mean on a worn drivetrain.
Read the note12TRAIL
Choose a sprocket ratio for trail riding
Gearing tradeoffs for steep technical terrain, open trails, and fitment checks.
Read the note13TRAIL
Common drivetrain problems on trail rides
Chain derailment, loose hardware, worn parts, and the right response when a ride goes wrong.
Read the note14TRAIL
Tools to carry for chain and sprocket problems
Small emergency kit guidance for chain, sprocket, and recovery situations on a ride.
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