Motorcycle Chain & Sprocket Ratio Calculator

This tool helps riders and mechanics calculate gear ratios for chain-driven motorcycles. Simply input front and rear sprocket teeth counts to instantly see your final drive ratio. Compare against original sprockets (optional) to see percentage changes in acceleration or top speed. Perfect for:

• Tuning gearing for off-road adventures or track days
• Understanding how sprocket swaps affect power delivery
• Avoiding guesswork when modifying your bike

How Sprocket Ratios Work

🛠️ Ratio Formula: Rear Teeth ÷ Front Teeth

📈 Higher Ratio: More acceleration, lower top speed (increase rear teeth or decrease front teeth)

📉 Lower Ratio: Higher top speed, less acceleration (decrease rear teeth or increase front teeth)

🔗 Chain Note: Changing sprocket sizes often requires a new chain length

 

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Email us at: info@epikmoto.com