Yuasa GYZ20L High Performance Maintenance Free AGM 12 Volt Battery - YUAM720GZ

The Yuasa GYZ20L High Performance Maintenance Free AGM 12-Volt Battery (YUAM720GZ) is a factory-activated, sealed AGM powersports battery engineered for demanding applications across motorcycles, ATVs, and UTVs. Designed as a step up from the previous Yuasa YTX series, the GYZ20L is recognized as the OEM battery on platforms like the Honda GL1800 Gold Wing — a testament to its reliability and high-output performance. If you're replacing a worn battery or upgrading to a premium AGM unit, this is the battery powersports riders reach for.

Key Features & Benefits

• Most Powerful Compact AGM for Powersports: The GYZ series is described as the most powerful, compact Absorbed Glass Mat battery available for powersport applications — meaning you get serious cranking capability without sacrificing space in tight battery compartments.
• Advanced Lead-Calcium Technology: Yuasa's lead-calcium chemistry holds its specific gravity more than 3 times longer than conventional lead-antimony batteries. This translates to dramatically longer periods between charges during standby and storage — ideal for seasonal riders or winter storage situations.
• Superior Vibration Resistance: AGM separators combined with an advanced grid design provide extreme vibration resistance, protecting internal components on rough trails, backroads, or long touring miles.
• More Active Material Surface Area: Enhanced plate design increases active material surface area, delivering improved performance and power delivery on every start.
• Factory Activated & Sealed: Shipped ready to install — no acid filling required. The sealed, non-spillable construction means it can be mounted in virtually any orientation without risk of leaks.
• True Maintenance-Free Operation: Once installed, there's no need to check or top off electrolyte levels, making this an especially practical choice for touring riders and UTV owners.
• Taller Plates for Extra Surface Area: GYZ series batteries feature taller plates than conventional designs, creating additional surface area that supports higher cold cranking performance — critical for big-bore engines and cold-weather starting.

Specifications

• Part Number: YUAM720GZ
• Voltage: 12 Volt
• Battery Type: Absorbed Glass Mat (AGM), Sealed, Non-Spillable
• Technology: Advanced Lead-Calcium
• Activation: Factory Activated (pre-filled, ready to install)
• Series: GYZ Series (upgrade over prior YTX series)
• Application Category: Powersports (Motorcycle, ATV, UTV)
• Air Freight: Not prohibited

Fitment

The Yuasa GYZ20L fits a wide range of motorcycles, ATVs, and UTVs. Confirmed compatible applications include:

• Buell: M2 Cyclone (1997–2002), S3 Thunderbolt (1997–2001), S3T Thunderbolt (1997–2002), X1 Lightning (1999–2002)
• Can-Am: Commander 1000 (2011–2014), Defender HD8 & HD10 (2016), Renegade 500 (2008–2013)
• Honda: GL1800 Gold Wing (2001–2005, 2018–2021), GL1800B Gold Wing F6B (2013–2016), VTX1800C (2002–2008), VTX1800F (2005–2008), VTX1800N (2004–2008), VTX1800R (2002–2008), VTX1800S (2002–2006), VTX1800T (2007–2008)
• Polaris: Scrambler 850 (2015–2017), Sportsman 550 (2012), Sportsman 850 (2015–2017)
• Triumph: Rocket III (2004–2010)

Always verify fitment against your specific year, make, model, and trim before ordering. If you're unsure whether the GYZ20L is the correct battery for your vehicle, contact ThreePiece.us for expert fitment assistance.

What's in the Box

• Yuasa GYZ20L 12-Volt AGM Battery (factory activated, sealed)
• Terminal hardware included

Why Buy from ThreePiece.us

• Free Shipping on Every Order: The Yuasa GYZ20L ships free to your door — no minimum order required.
• Affirm Financing Available: Spread your purchase across easy monthly payments with Affirm financing at checkout.
• Expert Fitment Help: Not sure if this battery fits your ride? Our team can help you confirm compatibility before you buy — saving you time and return hassle.
• Focused Powersports Selection: We carry the parts and batteries powersports enthusiasts actually need, backed by knowledgeable support.

Frequently Asked Questions

Q: Is the Yuasa GYZ20L truly maintenance-free?
A: Yes. The GYZ20L uses a sealed AGM design that requires no electrolyte checks or top-offs. It arrives factory activated and ready to install right out of the box.

Q: Is this the same battery that comes stock on the Honda GL1800 Gold Wing?
A: Yes — the GYZ20L is recognized as OEM fitment on the Honda GL1800 Gold Wing across multiple model years, and the GYZ series represents an upgrade over the earlier Yuasa YTX batteries.

Q: Can I store my bike for winter with this battery installed without it going dead?
A: The GYZ20L's advanced lead-calcium technology holds its specific gravity more than 3 times longer than conventional lead-antimony batteries, meaning it is well suited for extended standby periods like winter storage. A quality battery tender is still recommended for very long storage periods.

Q: Does the battery ship ready to install, or do I need to add acid?
A: The GYZ20L is factory activated, meaning it is pre-filled and sealed at the factory. No acid handling is required — simply install it and go.