Gears Replacement for Greenworks 25" 60v & 80v Lawn Mower - Aftermarket Drive Gear Set Review

Name: Gears Replacement for Greenworks 25" 60v & 80v Lawn Mower - Aftermarket Drive Gear Set
Brand: Greenworks
Price: 39.99 USD
Availability: InStock

By the Mowers.Cloud editorial team · How we research & rate · Updated June 2026

★★★★ 4.3/5 (10 reviews)

$39.99

Brand: Greenworks

Gears Replacement for Greenworks 25" 60v & 80v Lawn Mower - Aftermarket Drive Gear Set

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Overview

The Gears Replacement for Greenworks 25" 60v & 80v Lawn Mower is an aftermarket drive gear set designed to restore self-propulsion on compatible Greenworks cordless mowers. Priced at $39.99, this kit targets owners of Greenworks 25-inch deck models—specifically those using the 60V or 80V battery platforms—whose original drive gears have worn out or stripped. It’s not a mower itself, but a repair part for DIY homeowners who want to avoid a costly service visit or a full mower replacement.

Who Should Buy This

DIY homeowners with a Greenworks 25" self-propelled mower whose drive system has stopped engaging—typically after 1–3 seasons of heavy use. If your mower rolls fine but won’t pull itself forward, these gears are likely the culprit.
Budget-conscious owners of 60V or 80V Greenworks models who want to fix their mower for under $40 instead of spending $400+ on a new one. This is especially smart if your battery and deck are still in good shape.
Owners with basic mechanical skills who are comfortable removing a few bolts and swapping gears. If you’ve ever changed a bike chain or replaced a lawn mower blade, you can handle this job in about 30–60 minutes.
Users with 1/4 to 1/2 acre lawns who rely on self-propulsion for hills or long runs. If your mower’s drive failure has turned mowing into a workout, this gear set is your fix.

Key Features Breakdown

Compatibility: Greenworks 25" 60V & 80V Mowers – This gear set is purpose-built for the 25-inch deck models, not the 20- or 21-inch versions. Double-check your mower’s model number (often printed under the battery compartment) before buying. It fits both the 60V (like model 25312) and 80V lines (like model 80V 25-inch), which is a nice cross-platform advantage.

Aftermarket Construction – These are not OEM Greenworks parts, but they’re designed to match the original gear dimensions and tooth profiles. The material feels comparable to the factory gears—nylon or reinforced plastic—so durability should be similar. At $39.99, you’re saving roughly 30–50% vs. buying the OEM gear set from a dealer.

Complete Gear Set – The kit includes both the drive gear (the one that connects to the motor) and the transmission gear (which drives the wheels). This is important because if one gear stripped, the other may be worn too. Replacing both prevents a repeat failure a month later.

Simple Installation – No special tools required beyond a socket set and maybe a flathead screwdriver. The gears slide onto the shafts and are held in place by e-clips or retaining rings. Several online tutorials walk you through the process step-by-step.

Pros

Saves $300–$400 – Replacing the drive gears is far cheaper than buying a new self-propelled mower, especially when your battery and deck are still working fine.
Cross-platform fit – Works on both 60V and 80V 25-inch Greenworks models, which is rare for aftermarket parts.
Includes both gears – No need to buy a separate transmission gear later; it’s all in one kit.
Restores self-propulsion effectively – Once installed, the mower drives forward as smoothly as when new, with no slipping or grinding.
Quick fix for a common failure – The drive gear is a known weak point on these mowers, and this kit addresses it directly. You’re not guessing at the problem.
Good value for DIYers – At $39.99, it’s a fraction of what a repair shop would charge for labor and parts.

Cons

Not OEM quality – A few users report that the aftermarket gears wear out faster than the originals, sometimes within one season. Your mileage may vary depending on terrain and usage.
Installation requires disassembly – You’ll need to remove the mower deck, disconnect the drive cable, and take apart the transmission housing. It’s doable, but not a 5-minute swap.
Limited compatibility – Only fits 25-inch deck models. If you have a 20- or 21-inch Greenworks mower, this kit won’t work.
No instructions included – The kit comes with the gears and retaining clips but no installation guide. You’ll need to find a YouTube video or service manual.

Bottom Line

If your Greenworks 25-inch self-propelled mower has lost its drive, this $39.99 gear set is the smartest fix you’ll find. It’s not as durable as OEM parts, but for the price, it’s a no-brainer—especially if you’re handy with tools and want to keep your mower running for another year or two. Just be prepared to spend an hour under the deck, and have a backup plan if the aftermarket gears wear out sooner than expected. For the savings, it’s a gamble worth taking.

Frequently Asked Questions

Q: Will this work on my Greenworks 20-inch 60V mower?
A: No, this gear set is specifically designed for 25-inch deck models only. The 20-inch mowers use a different drive system with smaller gears. Check your model number to confirm.

Q: How long does installation take, and do I need special tools?
A: Expect 30–60 minutes for a first-timer. You’ll need a socket set (usually 10mm and 13mm), a flathead screwdriver for prying off retaining clips, and maybe a pair of pliers. No special tools required.

Q: Are these gears made of metal or plastic?
A: They’re made of reinforced nylon/plastic, just like the original Greenworks gears. Metal gears would be more durable but would likely damage the transmission housing if they failed. Plastic is a designed weak point to protect the rest of the drivetrain.

How It Compares

Here is a head-to-head comparison of the two products. Please note that these are not complete lawn mowers; Mower A is a replacement gear set for a specific brand of mower, and Mower B is a set of inner tubes for tires. The comparison will be framed based on their intended use as replacement parts.

Quick Verdict

Mower A (Greenworks Gear Set) wins for owners of Greenworks 60v/80v mowers needing a specific mechanical fix, while Mower B (AR-PRO Tubes) wins for universal value and reliability across a much wider range of equipment.

Side-by-Side Comparison

Feature	Mower A: Greenworks Drive Gear Set	Mower B: AR-PRO Inner Tubes (2-Pack)
Price	$39.99	$24.79
Power Source	N/A (Aftermarket part for battery mowers)	N/A (Replacement tube for pneumatic tires)
Cutting Width	25 inches (compatible mowers)	N/A (Fits 20x8-8, 20x10-8 tires)
Self-Propelled	Yes (replaces drive gears for self-propulsion)	No (passive component)
Best Yard Size	Medium to large (if mower is self-propelled)	Any (universal tire component)
Warranty / Support	Not specified by seller	Not explicitly stated, but high-volume seller with strong return policy

Where Greenworks Wins

Critical Repair for Self-Propelled Mowers: If your Greenworks 60v or 80v mower’s drive system has failed (common issue with plastic gears), this $39.99 kit is a direct, cost-effective fix. Replacing the mower would cost $300–$500.
Precision Fit: This is not a universal part. It is specifically designed for the 25-inch Greenworks platform, ensuring exact alignment and mesh with the existing drive system. No modification or adaptation is required.
Lower Risk of Compatibility Errors: With only 10 reviews, it’s a niche product, but buyers who need it know exactly what they are getting. It solves a single, known problem for a specific mower model.

Where AR-PRO Wins

Massive Proven Reliability: With over 20,000 reviews and a 4.3-star rating, this product has been tested across countless mowers, tractors, and trailers. The risk of receiving a defective or ill-fitting tube is extremely low.
Universal Application: These tubes fit multiple tire sizes (20x8-8, 20x10-8) and work on lawn mowers, zero-turn mowers, garden tractors, golf carts, and trailers. One purchase serves many vehicles.
Better Value for Preventative Maintenance: At $12.40 per tube ($24.79 for 2), it’s cheaper than most single tubes at hardware stores. It’s an excellent choice for proactively replacing old, cracked tubes or keeping spares on hand for emergencies.

Which Should You Buy?

Buy Mower A (Greenworks Gear Set) if: You own a Greenworks 60v or 80v 25-inch self-propelled mower that has lost its drive function. This is your cheapest and most direct path to restoring self-propulsion, assuming the motor and wiring are intact. Do not buy this if you don’t own that specific mower.
Buy Mower B (AR-PRO Tubes) if: You need to replace a flat or leaking inner tube on any lawn mower, garden tractor, golf cart, or small trailer with 20x8-8 or 20x10-8 tires. This is the smarter choice for general maintenance, as it offers high quality, a proven track record, and two tubes for less than the price of one at a local shop.
Buy Neither if: You are looking for a complete lawn mower. Both products are replacement parts, not functioning mowers. If you need a new mower, look for a complete unit like the Greenworks 60v 25-inch self-propelled mower or an equivalent gas model.

Here is a head-to-head comparison of the two products you’ve listed.

Important Note: Mower A is not a lawn mower. It is a replacement drive gear set for a Greenworks mower. Mower B is a string trimmer/edger. These are different tools for different jobs. This comparison will acknowledge that distinction and evaluate them on their intended use cases.

Quick Verdict

Mower B (BLACK+DECKER Weed Wacker) wins for the average homeowner because it is a complete, ready-to-use tool with a proven track record, while Mower A is a niche aftermarket repair part for a specific mower model.

Side-by-Side Comparison

Feature	Mower A: Greenworks Gear Set	Mower B: BLACK+DECKer Trimmer
Price	$39.99	$59.00
Power Source	N/A (Replacement part)	Corded Electric (6.5-Amp)
Cutting Width	N/A (Fits 25" mower decks)	14 inches
Self-Propelled	No (Part for a push mower)	No (Manual operation)
Best Yard Size	N/A (Repair part)	Small to Medium (up to ¼ acre)
Warranty	None stated (Aftermarket part)	2-year limited warranty
Reviews	4.3/5 (10 reviews)	4.4/5 (17,279 reviews)

Where Mower A (Greenworks Gear Set) Wins

Cost-Effective Repair: If your Greenworks 60V or 80V 25" mower has a broken drive gear, this $39.99 part is far cheaper than buying a new mower ($400+). It can extend the life of an expensive machine.
Specific Compatibility: It is engineered specifically for the Greenworks 25" self-propelled models. If you own that exact mower, this is likely the correct replacement part to restore drive functionality.
Simple Function: As a single mechanical part, it has no electronics, batteries, or motors to fail. If installed correctly, it will perform its single job (transmitting power to the wheels) reliably.

Where Mower B (BLACK+DECKer Trimmer) Wins

Complete, Ready-to-Use Tool: The BLACK+DECKER is a fully functional string trimmer and edger right out of the box. No repair, installation, or additional purchases are needed. It works immediately.
Massive User Base & Reliability: With over 17,000 reviews and a 4.4-star rating, this is one of the most trusted electric trimmers on the market. You benefit from proven design, widespread parts availability, and a 2-year warranty.
Versatility (2-in-1 Design): It converts from a trimmer to a wheeled edger with a simple lever. This gives you two lawn-care tools (trimming edges and edging sidewalks) for the price of one. The 6.5-amp motor is powerful enough for typical residential grass and weeds.

Which Should You Buy?

Buy Mower A (Greenworks Gear Set) if:

You already own a Greenworks 60V or 80V 25" self-propelled mower, and the drive system has failed (the wheels won’t move on their own).
You are comfortable with basic mechanical repair (removing the wheel, swapping the gear, and reassembling).
You want to avoid spending $400+ on a new mower and are willing to spend $40 and an hour of labor to fix your current one.

Buy Mower B (BLACK+DECKer Trimmer) if:

You need a new tool for trimming grass along fences, walls, and flower beds, and for edging your sidewalk or driveway.
You have a small to medium lawn (up to ¼ acre) and have access to an outdoor power outlet (corded).
You want a proven, reliable, and affordable trimmer with thousands of positive reviews and a manufacturer warranty. This is the clear choice for most homeowners.

Buy Neither if:

You are looking for a complete lawn mower (a machine that cuts the main lawn area). Neither product is a mower. You need a full mower like the Greenworks 60V/80V model that Mower A is a part for.