Built for Harley riders, this powerful 500+ CCA battery is ready to fire up any road beast—no maintenance required.
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ThrottleX MX20L – Premium AGM Battery Built for Big Cruisers
If you're riding a Harley or other V-twin beast, you need a battery that delivers. The ThrottleX MX20L is engineered for maximum starting power, delivering 500+ cold cranking amps in a sealed, zero-maintenance design. It fits a broad range of Harley-Davidson models from Fat Boy to V-Rod and is built to resist vibration, offer fast recharge times, and handle long rides without flinching.
Why It Stands Out
- 💥 Massive Cranking Power – Over 500 CCA for high-displacement engines
- 🔒 Completely Maintenance-Free – Sealed AGM design, no fluids, no hassles
- 🏍️ Harley-Ready Fit – Made for Fat Boy (1991–2025), Softail (1991–2025), V-Rod (2008–2025), and more
- ⚙️ OEM Compatibility – Replaces HDX20L, ETX20L, CTX20L, TX20L, and more
- 📏 Durable & Compact – Measures 6-7/8" x 3-7/16" x 6-1/8" and weighs 15.5 lbs
Best For
- 🏍️ Harley-Davidson owners who ride year-round
- 🚨 Riders seeking a long-lasting battery with high CCA performance
- 🔧 Enthusiasts upgrading from older OEM batteries for better reliability
FAQs
Which motorcycles does the MX20L fit?
It fits multiple Harley-Davidson models, including: Fat Boy 1991-2025, Low Rider (Dyna)1993-2025, Night Rod 2008-2025, Softail 1991-2025, Sportster 1997-2003, Super Glide 1995-2025, V-Rod 2008-2025 and Wide Glide 1993-2025. This MX20L replaces the following batteries: 65989-97A, 65989-97B, 65989-97C, 65989-97D, 65989-97E, 65989-90B, ETX20L, CTX20L, HDX20L and TX20L.
Does it require any maintenance?
No—this AGM battery is completely sealed and maintenance-free.
How powerful is the startup current?
It delivers 500+ cold cranking amps, perfect for high-compression engines and cold starts.
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Updated: July 29, 2025
Disclaimer: CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED "AS IS" AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME. Some links on our website are affiliate links. Please note that we may earn commissions through affiliate links. As an Amazon Associate I earn from qualifying purchases. For more information about our content and participation in affiliate programs, please see our Terms of Use.