Sale

Ignitions and Electrical› Charging Systems

Exide

Marathon Max 12V AGM Battery

$184.97 $179.42 Save $5.55

SKU: MX51R

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Exide Marathon Max MX51R is a 12-volt AGM battery designed to provide reliable power for a vehicle's electrical system. It features 435 Cold Cranking Amps (CCA) and a reserve capacity of 75 minutes, with a 41 Ah capacity. This battery is suitable for vehicles with start-stop systems and power-hungry electronics.
Show original supplier description
The Exide Marathon Max MX51R is a 12-volt AGM (Absorbed Glass Mat) battery engineered to deliver robust power for demanding vehicle electrical systems. With 435 Cold Cranking Amps (CCA), it ensures reliable starting power in various conditions. The battery boasts a 41 Amp-hour (Ah) capacity and a 75-minute reserve capacity, making it well-suited for vehicles equipped with start-stop technology or extensive electronic accessories. Its advanced AGM construction offers enhanced energy density and durability. This battery is designed as a direct replacement for Group Size 51R applications. The Exide Marathon Max series is built to maximize energy capacity for the needs of modern drivers. Its robust design aims for lasting energy performance, providing a dependable power source for everyday use and demanding situations. The Exide MX51R battery is compatible with a wide range of vehicles, including numerous Acura and Honda models. Fitment includes but is not limited to Acura CSX (2008-2011), Acura EL (1997-2000), Acura ILX (2013-2019), Acura Integra (1994-2001), Acura RSX (2002-2006), Acura TSX (2004-2014), Honda Accord (2003-2017), and Honda Civic (1988-2021). It is crucial to verify fitment with your specific vehicle's make, model, and year using the provided compatibility information.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandExide
Part NumberMX51R
CategoryIgnitions and Electrical
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy