Mighty Max YTX9-BS front view shows compact, spill-proof power for Honda ATVs.
Mighty Max YTX9-BS side view highlights vibration-resistant, long-lasting performance.
Mighty Max Battery YTX9-BS top view emphasizes sealed SLA design.
Mighty Max YTX9-BS battery packaged image suggests ready-to-install replacement.
Mighty Max YTX9-BS dimensions label illustrates 5.90 x 3.38 x 4.25 inches.
Mighty Max YTX9-BS screws pack shows included hardware.
Mighty Max YTX9-BS rear view with rugged casing.
Mighty Max YTX9-BS in motorcycle/ATV setup demonstrates reliable reusability.
Mighty Max YTX9-BS front view shows compact, spill-proof power for Honda ATVs.
Mighty Max YTX9-BS side view highlights vibration-resistant, long-lasting performance.
Mighty Max Battery YTX9-BS top view emphasizes sealed SLA design.
Mighty Max YTX9-BS battery packaged image suggests ready-to-install replacement.
Mighty Max YTX9-BS dimensions label illustrates 5.90 x 3.38 x 4.25 inches.
Mighty Max YTX9-BS screws pack shows included hardware.
Mighty Max YTX9-BS rear view with rugged casing.
Mighty Max YTX9-BS in motorcycle/ATV setup demonstrates reliable reusability.

Mighty Max Battery YTX9-BS | Replaces Honda ATV TRX300EX/TRX400EX (300EX 400EX)

Overview The Mighty Max Battery YTX9-BS is a compact 12-volt power source designed to serve as a...
Vendor: Mighty Max Battery
Availability: In stock
£67.03
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Mighty Max YTX9-BS front view shows compact, spill-proof power for Honda ATVs.

Mighty Max Battery YTX9-BS | Replaces Honda ATV TRX300EX/TRX400EX (300EX 400EX)

£67.03
Mighty Max YTX9-BS front view shows compact, spill-proof power for Honda ATVs.
Mighty Max YTX9-BS side view highlights vibration-resistant, long-lasting performance.
Mighty Max Battery YTX9-BS top view emphasizes sealed SLA design.
Mighty Max YTX9-BS battery packaged image suggests ready-to-install replacement.
Mighty Max YTX9-BS dimensions label illustrates 5.90 x 3.38 x 4.25 inches.
Mighty Max YTX9-BS screws pack shows included hardware.
Mighty Max YTX9-BS rear view with rugged casing.
Mighty Max YTX9-BS in motorcycle/ATV setup demonstrates reliable reusability.

Mighty Max Battery YTX9-BS | Replaces Honda ATV TRX300EX/TRX400EX (300EX 400EX)

£67.03
Description
Description
x

Overview

The Mighty Max Battery YTX9-BS is a compact 12-volt power source designed to serve as a reliable replacement for several Honda ATV models, including classic TRX variants. With an 8 Ah capacity and 135 CCA, this sealed lead acid (SLA) battery offers steady starting power across a range of conditions while maintaining a clean, spill-proof profile inside the battery compartment.

This unit emphasizes practical design details that riders and mechanics value: a sealed AGM construction that handles vibrations, a form factor sized to fit common battery boxes, and a straightforward specification set that keeps installation simple. The listing covers the battery and screws only; wire harnesses and mounting accessories are not included, which makes it a direct replacement option for setups that already use compatible hardware.

Key specs at a glance

  • 12V, 8Ah capacity with 135 CCA
  • Sealed Lead Acid (SLA) with AGM spill-proof design
  • Dimensions: 5.90 in x 3.38 in x 4.25 in; Polarity: Positive on left, Negative on right
  • Includes the battery and screws; no harness or mounting accessories included

Durability and real-world performance

  • Resists shocks and vibrations for dependable starts on rough trails
  • Wide operating temperature range supports cold starts and hot riding days
  • Deep-discharge recovery helps preserve usable capacity after long rides
  • Flexible mounting options allow installation in various vehicle layouts

Installation, care, and warranty

This battery is designed for maintenance-free operation and simple replacement. Expect the included screws to suffice for basic mounting; note that harnesses and extra mounting hardware are not included. A full one-year warranty backs this Mighty Max option.

If you are upgrading an aging power source or stocking spare components for proactive maintenance, this YTX9-BS provides a practical blend of power, resilience, and value suitable for riders who want reliable starting power without unnecessary fuss.

FAQ

Q: Will this YTX9-BS battery fit Honda ATV TRX300EX/TRX400EX models?

A: The YTX9-BS matches the 12V 8Ah SLA spec commonly used in those models and serves as a replacement option; verify exact fit for your mounting.

Q: What’s included and the warranty?

A: Includes the battery and screws only; no wire harness or mounting accessories; mounts in most positions; comes with a full one-year warranty.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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