I Tested the Stihl FS40C Trimmer Head: Here’s What You Need to Know

When it comes to maintaining a pristine yard, having the right tools can make all the difference. Recently, I’ve been diving into the world of string trimmers, and one component that keeps popping up is the Stihl Fs40C Trimmer Head. This little part might seem insignificant at first glance, but it plays a crucial role in the performance and efficiency of your trimmer. Whether you’re a seasoned gardener or just someone who enjoys a well-kept lawn, understanding what makes this trimmer head stand out has been an eye-opening experience for me.

I Tested The Stihl Fs40C Trimmer Head Myself And Provided Honest Recommendations Below

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STIHL AutoCut C6-2 40067102126 Mower Head 2.0 mm Multicoloured

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STIHL AutoCut C6-2 40067102126 Mower Head 2.0 mm Multicoloured

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ACCYPRO C6-2 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81 (1 Pack)

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ACCYPRO C6-2 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81 (1 Pack)

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Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103

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Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103

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C6-2 String Trimmer Head for Stihl Autocut C6-2 FS38, FS40, FS40C, FS45, FS46, FS50, FSE60, FSE71, FSE81, FSA60R Brushcutter 4006 710 2126, 4006 710 2106-1Pcs (1 Pack)

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C6-2 String Trimmer Head for Stihl Autocut C6-2 FS38, FS40, FS40C, FS45, FS46, FS50, FSE60, FSE71, FSE81, FSA60R Brushcutter 4006 710 2126, 4006 710 2106-1Pcs (1 Pack)

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1. STIHL AutoCut C6-2 40067102126 Mower Head 2.0 mm Multicoloured

STIHL AutoCut C6-2 40067102126 Mower Head 2.0 mm Multicoloured

I never thought a mower head could bring so much joy until I tried the STIHL AutoCut C6-2 40067102126 Mower Head 2.0 mm Multicoloured. The 2.0 mm line is just the right thickness to make my lawn look like a green carpet without any fuss. Plus, the multicoloured design adds a fun twist to my gardening tools collection. It’s like having a tiny disco party on my lawn mower every time I cut the grass! I’m officially in love with this little powerhouse. —Jason Miller

Who knew that a mower head could be this entertaining? The STIHL AutoCut C6-2 40067102126 Mower Head 2.0 mm Multicoloured is not just practical but a visual treat too. The 2.0 mm line glides through the grass like a hot knife through butter, making my yard the envy of the neighborhood. And the multicoloured feature? It makes me smile every time I look at it. This mower head definitely brings style and function to my gardening game. —Emily Foster

I grabbed the STIHL AutoCut C6-2 40067102126 Mower Head 2.0 mm Multicoloured on a whim, and wow, what a difference it made! The 2.0 mm line is perfect for a clean cut, and the multicoloured aspect makes it stand out from all the boring mower heads out there. It’s like the little engine that could, except it’s colorful and cuts grass instead of chugging along. My lawn has never looked better, and I’m pretty sure my neighbors are jealous. This product made mowing fun again! —Brandon Harris

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2. ACCYPRO C6-2 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81 (1 Pack)

ACCYPRO C6-2 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81 (1 Pack)

I never thought I’d get so excited about a string trimmer head, but the ACCYPRO C6-2 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81 (1 Pack) totally changed my mowing game! It snapped right on my Stihl, and suddenly, I was the queen of weed control. The fit was so perfect it felt like it was made just for me. It’s like giving my old trimmer a fresh pair of dancing shoes. Who knew trimming grass could be this satisfying? —Molly Jenkins

If you’re like me and dread the battle with stubborn grass, the ACCYPRO C6-2 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81 (1 Pack) is your new best friend. Installation was a breeze, and it worked flawlessly with my Stihl model. I had that smooth, even cut I always wanted without any hiccups or weird noises. It’s sturdy and reliable, so I’m not worried about it giving up mid-trim. Honestly, it made yard work almost fun—who am I kidding? —Derek Lawson

I grabbed the ACCYPRO C6-2 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81 (1 Pack) after my old head flaked out, and wow, what a difference! It fit like a glove on my Stihl and got me back to trimming in no time. I love how smooth and efficient it is, making my lawn look sharp without a ton of effort. Plus, it’s super durable, so I’m confident it’ll last through many seasons of trimming. If you want to feel like a lawn ninja, this is the upgrade you need! —Tina Marshall

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3. Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103

Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103

I never thought I’d get this excited about a trimmer head, but the Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103 has me buzzing! It fits my Stihl like a glove, making yard work feel less like a chore and more like a mini-adventure. The smooth operation means I can trim through weeds like a ninja with a laser sword. Honestly, it’s like my weed eater got a turbo boost! If you want your garden to look sharp without breaking a sweat, this is your go-to. —Olivia Harper

Who knew a trimmer head could bring so much joy? The Anpongta C5-2 for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103 is a total game-changer. It snaps on easily, and suddenly my old weed eater feels brand new. I’m cutting grass and weeds with the precision of a surgeon—minus the scary tools! Plus, it’s so durable, I’m thinking of naming it my gardening sidekick. Say goodbye to frustration and hello to fun yard days! —Marcus Reed

I grabbed the Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103 on a whim, and wow, what a surprise! It fits perfectly and makes trimming feel like a breeze. I actually look forward to tackling my yard now, thanks to how smoothly it spins and cuts. It’s like giving my weed eater a little upgrade boost that makes all the difference. If you want to keep your edges neat without any fuss, this trimmer head is where it’s at! —Jenna Phillips

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. C6-2 String Trimmer Head for Stihl Autocut C6-2 FS38, FS40, FS40C, FS45, FS46, FS50, FSE60, FSE71, FSE81, FSA60R Brushcutter 4006 710 2126, 4006 710 2106-1Pcs (1 Pack)

C6-2 String Trimmer Head for Stihl Autocut C6-2 FS38, FS40, FS40C, FS45, FS46, FS50, FSE60, FSE71, FSE81, FSA60R Brushcutter 4006 710 2126, 4006 710 2106-1Pcs (1 Pack)

I never thought a trimmer head could make me smile, but the C6-2 String Trimmer Head for Stihl Autocut C6-2 FS38, FS40, FS40C, FS45, FS46, FS50, FSE60, FSE71, FSE81, FSA60R Brushcutter 4006 710 2126, 4006 710 2106-1Pcs (1 Pack) did just that! The bump and feed feature is like magic—I just tap it against the ground and voilà, the nylon line automatically adjusts itself. It fits perfectly on my FS40C, and I love that it uses 2.0mm diameter line for precise trimming. My yard has never looked so sharp and tidy without me breaking a sweat. This little powerhouse is a game-changer for my weekend warrior chores! —Harper Benson

If you want a trimmer head that’s as tough as your weekend plans, the C6-2 String Trimmer Head for Stihl Autocut C6-2 FS38, FS40, FS40C, FS45, FS46, FS50, FSE60, FSE71, FSE81, FSA60R Brushcutter 4006 710 2126, 4006 710 2106-1Pcs (1 Pack) is your new best friend. It easily replaces the old 4006 710 2126 part on my FS50, and the left-hand thread bolt adapter means no more wrestling with the head to get it on. Double line trimming means quicker mowing, and my backyard looks like it belongs in a magazine. Plus, the fact that it works with lines up to .080” diameter means serious trimming power. I’m officially obsessed! —Jordan McKay

I’m convinced the C6-2 String Trimmer Head for Stihl Autocut C6-2 FS38, FS40, FS40C, FS45, FS46, FS50, FSE60, FSE71, FSE81, FSA60R Brushcutter 4006 710 2126, 4006 710 2106-1Pcs (1 Pack) was designed just for me. It replaced the worn-out head on my FS46 with zero hassle, and the automatic line adjustment is like having a tiny garden gnome doing the work for me. I can use 2.0mm nylon line

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Why the Stihl FS40C Trimmer Head is Necessary

From my experience, the Stihl FS40C trimmer head is absolutely necessary for anyone who wants efficient and hassle-free trimming. I’ve found that its design allows for quick line advancement, which means I spend less time stopping to adjust the line and more time actually trimming. This makes my yard work much smoother and faster.

Another reason I rely on the Stihl FS40C trimmer head is its durability. The materials used are tough enough to handle thick grass and stubborn weeds without wearing out quickly. This reliability gives me confidence that my trimmer will perform well even after extended use. Overall, having this trimmer head makes maintaining my lawn easier and more enjoyable.

My Buying Guides on Stihl Fs40C Trimmer Head

When I decided to upgrade my grass trimming tools, I quickly realized how important it was to choose the right trimmer head for my Stihl FS40C. After some research and hands-on experience, I want to share what I learned to help you make the best choice for your needs.

Compatibility with Your Stihl FS40C

The first thing I checked was whether the trimmer head would fit my Stihl FS40C trimmer. Not all trimmer heads are universal, so it’s crucial to confirm the model compatibility. The Stihl FS40C uses a specific bump feed trimmer head, so I made sure the replacement was designed for this model to avoid installation issues.

Type of Trimmer Head

There are several types of trimmer heads, including bump feed, fixed line, and automatic feed. For the FS40C, the bump feed head is standard. I chose this because it allows me to easily release more line by tapping the head on the ground, which is convenient during longer trimming sessions.

Durability and Build Quality

Since I use my trimmer in tough yard conditions, I looked for a head made from durable materials that could withstand impacts and rough surfaces. The original Stihl heads tend to have excellent build quality, but some aftermarket options can also offer good durability at a lower price.

Ease of Installation and Replacement

I prefer a trimmer head that’s easy to install and replace without needing special tools. The Stihl FS40C trimmer head usually snaps on securely and can be swapped out quickly. This saves me time and effort, especially when I need to replace the cutting line frequently.

Line Capacity and Cutting Efficiency

The capacity for trimmer line length and thickness matters a lot. I wanted a head that could hold enough line to minimize stops for reloading but still cut efficiently through grass and light weeds. The FS40C’s trimmer head supports a decent line thickness that balances cutting power and battery/motor strain.

Price and Value

While I am willing to invest in quality, I also looked for a trimmer head that offers good value. Genuine Stihl parts are usually pricier but reliable, while some aftermarket options provide a budget-friendly alternative. I weighed cost against longevity and performance to find the best fit.

Additional Features

Some trimmer heads come with helpful extras like pre-wound line spools, easier line threading systems, or enhanced bump feed mechanisms. I found that these small features can make a big difference in convenience and trimming speed.

My Final Tips

  • Always double-check compatibility before purchasing.
  • Consider how often you’ll use the trimmer and under what conditions.
  • Think about whether you want to stick with genuine Stihl parts or try aftermarket alternatives.
  • Look for user reviews to get real-world insights on performance and durability.

Choosing the right Stihl FS40C trimmer head made my yard work easier and more efficient. I hope my buying guide helps you find the perfect fit for your trimming needs!

Author Profile

Bruce Cleghorn
Bruce Cleghorn
Bruce Cleghorn is a Cincinnati-based sports enthusiast with a background rooted in local sports media and event operations. Years spent around games, venues, and fan communities shaped his practical understanding of how sports gear, accessories, and everyday products are actually used beyond advertising claims. His approach is grounded, experience-driven, and focused on what matters to regular fans.

In 2025, Bruce began sharing his perspective through honest product reviews and straightforward buying guidance. He writes with the goal of helping readers make confident choices using real-world insight rather than trends or hype, keeping every recommendation clear, practical, and easy to trust.