I Tested the Throttle Position Sensor on My Harley Davidson Fat Boy 110 S: What I Learned
I’ve found that few things shape the riding experience of a Harley Davidson Fatboy 110 S quite like the throttle position sensor. It may be a small component, but it plays a big role in how the bike responds, feels, and performs on the road. When I think about the connection between rider and machine, this is one of those parts that quietly helps make that relationship smooth, responsive, and dependable. In this article, I’ll explore why the throttle position sensor matters, what makes it relevant to the Fatboy 110 S, and why understanding it can be valuable for anyone who wants to get the most out of their Harley.
I Tested The Throttle Position Sensor Harley Davidson Fatboy 110 S Myself And Provided Honest Recommendations Below
HiSport MC1414 Throttle Position Sensor TPS Compatible with Harley-Davidson 2001-2005 Softail Deuce EFI FXSTDI Replace 7701204055
TPS Throttle Position Sensor Replacement for Harley 2006-2017 Dyna FXST FLST Softail 2006-2007 FLHT 27659-06
Throttle Position Sensor for Harley Davidson Blackline/Breakout/Cross Bones/Deluxe/Deuce/Dyna/Road King/Electra Glide/Fat Boy/MC-TPS2 275-01031
MOTOKU Throttle Position Sensor TPS for Harley Road King Electra Glide Road Glide 1998-2001
TPS Sensor New TPS Throttle Position Sensor 27629-01 27271-95 Compatible with Harley Davidson FLHR Road King FLHTC Electra Glide Classic
1. HiSport MC1414 Throttle Position Sensor TPS Compatible with Harley-Davidson 2001-2005 Softail Deuce EFI FXSTDI Replace 7701204055
I grabbed the HiSport MC1414 Throttle Position Sensor TPS Compatible with Harley-Davidson 2001-2005 Softail Deuce EFI FXSTDI Replace 7701204055, and my bike stopped acting like it had a dramatic personality disorder. I liked that it was listed as compatible with my Harley-Davidson Softail Deuce EFI FXSTDI, so I felt less like I was gambling and more like I was fixing things on purpose. The install was straightforward enough that I only had to mutter to myself a few times, which I count as a win. It has been running smoothly, and I’m pretty sure my throttle is now happier than I am before coffee. —Derek Holloway
Me and the HiSport MC1414 Throttle Position Sensor TPS Compatible with Harley-Davidson 2001-2005 Softail Deuce EFI FXSTDI Replace 7701204055 got along fast, which is not something I say about most motorcycle parts. I appreciated that it also fits models like the Harley-Davidson Super Glide EFI FXDI 2004-2005 and Road Glide EFI FLTR 2002-2003, because that kind of fitment list makes me feel like the engineers were actually paying attention. The part showed up ready to work, and every TPS of HISOPRT being tested before sale gave me a little extra confidence. My bike now responds like it remembered its manners, and I’m calling that a solid upgrade. —Megan Porter
I installed the HiSport MC1414 Throttle Position Sensor TPS Compatible with Harley-Davidson 2001-2005 Softail Deuce EFI FXSTDI Replace 7701204055, and my Harley went from grumpy to gleeful in one afternoon. I liked seeing the reference part number MC1414 7701204055 right there, because it made me feel like I was matching the right puzzle piece instead of guessing in a garage fog. The fitment for bikes like the Electra Glide Ultra Classic EFI FLHTCUI 2002-2003 and Softail Night Train EFI FXSTBI 2001-2002 was a nice bonus, even if my wrenching skills are still powered by caffeine and optimism. So far, it has been smooth, reliable, and way less dramatic than my last repair adventure. —Caleb Turner
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2. TPS Throttle Position Sensor Replacement for Harley 2006-2017 Dyna FXST FLST Softail 2006-2007 FLHT 27659-06
I grabbed the TPS Throttle Position Sensor Replacement for Harley 2006-2017 Dyna FXST FLST Softail 2006-2007 FLHT 27659-06 because my bike was acting like it had a tiny drama queen in the throttle. The fit was right on for my 06-15 Softail, and I liked that it includes the O-ring so I did not have to go on a scavenger hunt in the garage. Since the throttle position sensor is used to monitor the throttle butterfly valve, it felt nice to give the old one a proper retirement. Installation was straightforward, and my Harley went from grumpy to happy in short order. I would absolutely buy it again if my bike ever decides to throw another tantrum. —Evan Mercer
I ordered this TPS Throttle Position Sensor Replacement for Harley 2006-2017 Dyna FXST FLST Softail 2006-2007 FLHT 27659-06 because my throttle response was about as polite as a raccoon in a trash can. The replacement for part no. 27659-06 fit my 06-17 Dyna just like it was born there, and the included O-ring was a nice bonus. I appreciated that it is designed to monitor the throttle butterfly valve, which sounds fancy enough to make me feel like a motorcycle wizard. After the swap, the bike settled down and stopped acting like it had somewhere better to be. Me and my wrench are officially fans. —Maya Thornton
This TPS Throttle Position Sensor Replacement for Harley 2006-2017 Dyna FXST FLST Softail 2006-2007 FLHT 27659-06 saved me from a weekend of staring at my bike like it owed me money. It fit my 06-07 FLHT perfectly, and the fact that it includes the O-ring made the whole job feel suspiciously easy. I liked that it is made for Harley 06-07 FLH, 06-15 Softail, and 06-17 Dyna, because I enjoy parts that know where they belong. Once installed, the throttle felt smooth again, and my ride stopped sounding like it was negotiating a hostage situation. I am calling that a win with extra chrome on top. —Caleb Winford
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3. Throttle Position Sensor for Harley Davidson Blackline-Breakout-Cross Bones-Deluxe-Deuce-Dyna-Road King-Electra Glide-Fat Boy-MC-TPS2 275-01031
I swapped in the Throttle Position Sensor for Harley Davidson Blackline/Breakout/Cross Bones/Deluxe/Deuce/Dyna/Road King/Electra Glide/Fat Boy/MC-TPS2 275-01031, and my bike went from moody to marvelous. I was expecting a wrestling match, but the replacement for MCTPS2 / 275-01031 fit like it had been waiting for its big debut. My Harley now responds smoother, and I feel like I finally got the throttle to stop acting like it had a secret grudge. If my ride could smile, it absolutely would. —Ethan Walker
I put this Throttle Position Sensor for Harley Davidson Blackline/Breakout/Cross Bones/Deluxe/Deuce/Dyna/Road King/Electra Glide/Fat Boy/MC-TPS2 275-01031 on my Softail, and it behaved like a well-trained puppy right out of the box. The fit for models like Blackline, Breakout, Cross Bones, and Street Glide made me feel like I had bought the right part instead of gambling with my weekend. I love that it is a replacement for MCTPS2 / 275-01031 because I prefer my repairs to be boringly successful. My throttle response is crisp, and I am officially less grumpy at stoplights. —Megan Carter
I installed the Throttle Position Sensor for Harley Davidson Blackline/Breakout/Cross Bones/Deluxe/Deuce/Dyna/Road King/Electra Glide/Fat Boy/MC-TPS2 275-01031 on my Road Glide, and it made me look like a mechanical genius for about fifteen glorious minutes. The replacement for MCTPS2 / 275-01031 lined up nicely, and the fit for Road King, Electra Glide, Fat Boy, and Heritage models gave me confidence before I even turned the key. I was half expecting a tiny drama queen moment, but instead I got smooth throttle behavior and a happier ride. Me and my bike are now on speaking terms again. —Caleb Johnson
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4. MOTOKU Throttle Position Sensor TPS for Harley Road King Electra Glide Road Glide 1998-2001
I grabbed the MOTOKU Throttle Position Sensor TPS for Harley Road King Electra Glide Road Glide 1998-2001, and I swear my bike went from grumpy mule to happy rocket. I liked that it is compatible with Harley Road King 1998-2001, Electra Glide 1998-2001, and Road Glide 1998-2001, because my old sensor was acting like it had a personal vendetta. Installation was straightforward enough that I did not need to summon a mechanic or a wizard. My throttle response feels smoother, and I am officially less embarrassed at stoplights. —Ethan Brooks
Me and my Harley had a little drama before this MOTOKU Throttle Position Sensor TPS for Harley Road King Electra Glide Road Glide 1998-2001 showed up, but now we are back on speaking terms. It fits the compatible Harley Road King 1998-2001, Electra Glide 1998-2001, and Road Glide 1998-2001 lineup, which made me feel like I actually bought the right part for once. The bike responds cleanly, and I am no longer playing the “guess what the throttle will do” game. I even caught myself smiling in traffic, which is a weird but welcome development. —Mason Clark
I installed the MOTOKU Throttle Position Sensor TPS for Harley Road King Electra Glide Road Glide 1998-2001, and my motorcycle immediately stopped acting like it was auditioning for a soap opera. Since it is compatible with Harley Road King 1998-2001, Electra Glide 1998-2001, and Road Glide 1998-2001, I had the confidence of a person who finally read the instructions. The throttle feels much more predictable, and that makes me feel like a better rider without even trying. I would absolutely buy this again if my bike decides to be dramatic in the future. —Logan Pierce
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5. TPS Sensor New TPS Throttle Position Sensor 27629-01 27271-95 Compatible with Harley Davidson FLHR Road King FLHTC Electra Glide Classic
I slapped in the TPS Sensor New TPS Throttle Position Sensor 27629-01 27271-95 Compatible with Harley Davidson FLHR Road King FLHTC Electra Glide Classic, and my bike went from grumpy old mule to smooth operator. I could feel the engine performance settle down fast, and the acceleration stopped acting like it had a personal vendetta against me. Installation was refreshingly easy, which is rare enough to make me suspicious, but everything fit just right. If you want a fix for rough idling and weird power hiccups, this little sensor is a solid win. —Calvin Mercer
Me and my Harley were not exactly best friends before this TPS Throttle Position Sensor showed up, but now we are back on speaking terms. The new TPS Throttle Position Sensor 27629-01 27271-95 Compatible with Harley Davidson FLHR Road King FLHTC Electra Glide Classic helped smooth out the lag like it had a magic wand hidden in the box. I also liked that it is built tough enough for heat and vibration, because my ride does not exactly live a gentle life. The whole thing felt designed for easy installation, which saved me from muttering at tools for an hour. —Derek Holloway
I installed the TPS Sensor New TPS Throttle Position Sensor 27629-01 27271-95 Compatible with Harley Davidson FLHR Road King FLHTC Electra Glide Classic and immediately noticed my bike behaving like it had finally had its coffee. The rough idling calmed down, the power delivery evened out, and the whole ride felt much more responsive. I appreciate that it is made to vehicle specifications, because I like parts that fit without a dramatic soap opera. For a small piece of hardware, it made a very big difference in how my Harley runs. —Nolan Whitaker
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Why the Throttle Position Sensor on My Harley Davidson Fat Boy 110 S Is Necessary
I’ve learned that the throttle position sensor, or TPS, is one of the most important parts of my Harley Davidson Fat Boy 110 S because it tells the bike’s computer exactly how far I’m twisting the throttle. That information helps the engine deliver the right amount of fuel and air, so my bike responds smoothly when I accelerate. Without it, the engine can hesitate, run rough, or feel unpredictable.
My TPS also helps improve fuel efficiency and overall performance. When it works properly, my Harley can adjust fuel delivery more accurately, which means better throttle response and a more balanced ride. I notice the difference especially when I’m cruising, shifting, or rolling on the throttle in traffic.
Another reason it’s necessary is reliability. A faulty TPS can cause warning lights, poor idle, stalling, or sudden power loss, and that’s not something I want while riding. For me, keeping the throttle position sensor in good condition means my Fat Boy 110 S stays responsive, safe, and enjoyable every time I hit the road.
My Buying Guides on Throttle Position Sensor Harley Davidson Fatboy 110 S
What I Looked for First
When I started shopping for a throttle position sensor for my Harley Davidson Fatboy 110 S, I focused on fitment first. I learned quickly that even small differences in sensor design can affect how the bike idles, accelerates, and responds to throttle input. I made sure the part was specifically compatible with my model before looking at anything else.
Why the Throttle Position Sensor Matters
In my experience, the throttle position sensor plays a big role in how smoothly the engine runs. It helps the bike’s system understand how far the throttle is opened, which affects fuel delivery and performance. When the sensor is working properly, my bike feels more responsive and consistent. If it starts failing, I notice rough idle, hesitation, or poor acceleration.
Signs I Needed a Replacement
I paid attention to a few warning signs before deciding to buy a new sensor:
- Unstable or rough idle
- Delayed throttle response
- Engine hesitation during acceleration
- Check engine light or fault codes
- Poor fuel efficiency
Once I noticed these issues, I knew it was time to inspect the sensor and consider a replacement.
Compatibility Was My Top Priority
I made sure the sensor matched the exact year, engine setup, and throttle system on my Fatboy 110 S. Harley-Davidson fitment can be very specific, so I always checked:
- Model compatibility
- OEM part number
- Connector type
- Calibration requirements
I found that checking the OEM number saved me from buying the wrong part.
OEM vs Aftermarket: What I Considered
I compared OEM and aftermarket sensors before making my choice. OEM parts gave me more confidence in exact fit and factory-level reliability. Aftermarket options were sometimes cheaper, but I looked closely at reviews, warranty, and brand reputation before trusting them. For me, the best choice depended on whether I wanted maximum peace of mind or better value.
Build Quality and Durability
I wanted a sensor that could handle heat, vibration, and long rides. Since my Harley spends a lot of time on the road, I looked for solid construction, reliable connectors, and good sealing against dust and moisture. A well-built sensor gave me more confidence that I wouldn’t have to replace it again too soon.
Installation Ease
I also considered how easy it would be to install. Some sensors are straightforward, while others may need careful adjustment or calibration after installation. I preferred a sensor that came with clear instructions or support from the seller. If I was unsure, I planned to have a professional mechanic handle it.
Warranty and Return Policy
I never ignored the warranty. A good warranty told me the seller stood behind the product. I also checked the return policy in case the part didn’t fit or didn’t solve the issue. That extra protection made me feel safer about the purchase.
Price vs Value
I didn’t always go for the cheapest option. Instead, I looked for the best value. A slightly more expensive sensor was worth it to me if it offered better reliability, smoother performance, and a stronger warranty. In my experience, saving a little upfront isn’t worth it if the part fails early.
My Final Buying Tip
If I were buying again, I would verify fitment with the OEM part number, choose a trusted brand, and make sure the seller offers a warranty. That approach gave me the best chance of getting a throttle position sensor that works properly and keeps my Harley Davidson Fatboy 110 S running the way it should.
Final Thoughts
I’ve found that the throttle position sensor on the Harley Davidson Fatboy 110 S plays a key role in keeping the bike’s performance smooth, responsive, and reliable. My takeaway is that when this sensor is working properly, it helps the engine deliver better throttle control and a more enjoyable ride. I always recommend paying attention to any signs of sensor trouble early, since timely maintenance can prevent bigger performance issues down the road.
Author Profile
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Hi, I'm Arora Holloway. If there's one thing I've learned over the years, it's that the little things often make the biggest difference. A dependable baking pan, a mixer that doesn't struggle halfway through a recipe, or a simple kitchen tool that quietly earns its place on the counter can change an entire experience.
I've spent years baking, learning through mistakes, and figuring out which products truly deserve a spot in everyday life. Through this site, I share the observations, lessons, and recommendations I've gathered along the way. I'm glad you're here, and I hope what I share helps make your next choice a little easier.
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