Understanding your Harley Davidson’s transmission gear ratios is crucial for performance, fuel efficiency, and riding comfort. Different models and years have varying gear ratios that affect acceleration, top speed, and torque delivery.
This Harley Davidson Transmission Gear Ratio Chart provides an easy-to-read reference for all major models, helping you maintain, upgrade, or tune your bike for optimal performance.
Why You Need a Harley Transmission Gear Ratio Chart
- ✅ Optimized Performance – Ensure smooth acceleration and top-end speed.
- ✅ Fuel Efficiency – Correct gear ratios reduce engine strain and fuel consumption.
- ✅ Compatibility Check – Choose the right aftermarket or replacement components.
- ✅ Maintenance & Upgrades – Avoid mismatched gears that can damage the transmission.
Harley Davidson Transmission Gear Ratio Chart
| Harley Model | Year Range | Gear 1 | Gear 2 | Gear 3 | Gear 4 | Gear 5 | Gear 6 | Notes |
|---|---|---|---|---|---|---|---|---|
| Sportster 883/1200 | 2004–Present | 2.37 | 1.66 | 1.25 | 1.00 | 0.84 | N/A | 5-speed gearbox |
| Softail Models | 2000–2017 | 2.52 | 1.81 | 1.33 | 1.00 | 0.85 | N/A | 5-speed Twin Cam |
| Softail (M8 Engines) | 2018–2024 | 2.54 | 1.80 | 1.34 | 1.00 | 0.81 | 0.79 | 6-speed Milwaukee-Eight |
| Dyna Models | 2000–2017 | 2.52 | 1.81 | 1.33 | 1.00 | 0.85 | N/A | 5-speed gearbox |
| Touring Models | 2000–2024 | 2.43 | 1.66 | 1.25 | 1.00 | 0.84 | 0.75 | 6-speed gearbox |
| V-Rod | 2002–2017 | 2.58 | 1.83 | 1.32 | 1.00 | 0.87 | 0.79 | 6-speed gearbox |
| Street 500/750 | 2015–2020 | 2.67 | 1.80 | 1.33 | 1.00 | 0.85 | N/A | 5-speed gearbox |
| Pan America 1250 | 2021–Present | 2.54 | 1.80 | 1.34 | 1.00 | 0.81 | 0.79 | 6-speed gearbox |
⚡ Pro Tip: Gear ratios impact torque and fuel efficiency. Lower numeric ratios = higher top speed, higher numeric ratios = better acceleration.
Things You Should Know About Harley Gear Ratios
Transmission Type Matters: Some older Harleys have 5-speed gearboxes; newer ones have 6-speed.
Primary Drive Ratio: Gear ratios combined with your primary drive affect overall performance.
Upgrades: Changing sprockets or gears changes effective gear ratios—can boost acceleration or cruising comfort.
Maintenance: Proper lubrication and timely inspections prevent gear wear.
FAQs About Harley Transmission Gear Ratios
Q1. How do gear ratios affect my Harley?
Gear ratios determine acceleration, top speed, and engine RPM at cruising speeds.
Q2. Can I change gear ratios on my Harley?
Yes, by changing primary drives, sprockets, or aftermarket gear sets, but ensure compatibility.
Q3. What’s the difference between 5-speed and 6-speed gearboxes?
6-speed offers more options at high speeds and better fuel efficiency at highway cruising.
Q4. Do all Harley models use the same transmission ratios?
No, ratios vary by model, year, and engine type. Refer to the gear ratio chart for specifics.
Q5. How often should I inspect my transmission?
Check oil levels, gear wear, and clutch operation every 5,000–10,000 miles depending on riding style.
Final Thoughts
The Harley Davidson Transmission Gear Ratio Chart helps you understand your bike’s performance characteristics and maintain optimal efficiency.
Whether you ride a Sportster, Softail, Touring, Dyna, V-Rod, Street, or Pan America, knowing your gear ratios ensures smooth acceleration, better fuel economy, and a more enjoyable ride.
Tonmoy is a recognized author and editor known for his deep passion and expertise in the world of motorcycles. His work goes beyond the mechanics and aesthetics, capturing the vibrant culture of motorcycle clubs and the strong sense of brotherhood shared by riders. Tonmoy’s special enthusiasm for motorcycle clubs adds depth to his writing, making his contributions to the motorcycle community both insightful and impactful
