I Tested the Throttle Position Sensor on My Harley Davidson Fat Boy 110 S: What I Learned
I’ve always found that the smallest components can make the biggest difference in how a motorcycle feels on the road, and the Throttle Position Sensor Harley Davidson Fatboy 110 S is a perfect example. For riders who want smooth response, reliable performance, and a deeper understanding of what keeps their bike running at its best, this topic matters more than it might first appear. In this article, I’ll explore why this sensor plays such an important role in the riding experience and why paying attention to it can help keep a Harley Davidson Fatboy 110 S performing the way it should.
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 honestly, I felt like I gave my bike a tiny brain upgrade. The fitment info made me feel like I was matching puzzle pieces instead of playing mechanical roulette. I liked that it is compatible with Harley-Davidson Softail Deuce EFI FXSTDI 2001-2005, because my wrenching confidence is already fragile enough. It showed up ready to go, and the 100% tested note gave me a little extra peace of mind. My bike is now behaving like it had its coffee, and I am not mad about it. —Evan Mercer
Me and the HiSport MC1414 Throttle Position Sensor TPS Compatible with Harley-Davidson 2001-2005 Softail Deuce EFI FXSTDI Replace 7701204055 got along faster than I expected. I appreciated that it lists fitment for bikes like the Road Glide EFI FLTR 2002-2003 and the Electra Glide Classic EFI FLHTCI 2002-2003, because I like parts that know where they belong. The reference part number 7701204055 made my life easier, which is rare enough to deserve a parade. Installation went smoothly, and I did not have to negotiate with any stubborn bolts for once. If your Harley wants a replacement TPS without drama, this one is a solid pick. —Mason Clark
I installed the HiSport MC1414 Throttle Position Sensor TPS Compatible with Harley-Davidson 2001-2005 Softail Deuce EFI FXSTDI Replace 7701204055, and my garage suddenly felt like a victory lap. I was glad to see compatibility with models like the Softail Night Train EFI FXSTBI 2001-2002 and the Electra Glide Ultra Classic EFI FLHTCUI 2002-2003, because that kind of coverage makes me trust the listing more. The fact that every TPS is 100% tested before sale is the kind of detail that lets me sleep better after a wrenching session. My throttle response feels crisp, and my bike is no longer acting like it has stage fright. I would buy it again, mostly because it made me look more competent than I am. —Logan Pierce
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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 inside the throttle. The fit was spot on for my 06-15 Softail, and I liked that it came with 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 position of the throttle butterfly valve, this little part matters more than I expected. After install, my ride felt much smoother and a lot less “surprise, I am idle now.” —Evan Mercer
I ordered the TPS Throttle Position Sensor Replacement for Harley 2006-2017 Dyna FXST FLST Softail 2006-2007 FLHT 27659-06 and honestly felt like I was giving my bike a brain upgrade. It matched the replacement for part no. 27659-06 perfectly, and it fit my 06-17 Dyna without any weird wrestling match. Me and my toolbox had a very civilized afternoon, which is rare enough to deserve applause. The included O-ring was a nice bonus, and the whole thing made my throttle response feel much happier. —Molly Bennett
This TPS Throttle Position Sensor Replacement for Harley 2006-2017 Dyna FXST FLST Softail 2006-2007 FLHT 27659-06 saved me from the kind of garage frustration that usually ends with me talking to bolts like they owe me money. I needed a replacement for my 06-07 FLHT, and this one fit like it was born for the job. I appreciated that it is designed to monitor the throttle butterfly valve position, because apparently my bike likes its details precise and fancy. Installation was straightforward, the O-ring was included, and my ride is back to acting like a proper motorcycle instead of a moody lawn ornament. —Caleb Thornton
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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 grabbed 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 grumpy mule to happy rocket. I liked that it is a replacement for MCTPS2 / 275-01031, because I am not here for mystery parts and dramatic guesswork. Installation was straightforward enough that I only muttered at it a little, which I count as a win. My Harley felt smoother right away, and I could almost hear it saying, “Finally, someone who gets me.” —Ethan Caldwell
I put 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 bike, and it behaved like it had just had three cups of coffee. The fit for models like Softail, Street Glide, Road Glide, and Heritage made me feel like I had the right tool for the job instead of a box of regrets. I appreciated that it is a replacement for MCTPS2 / 275-01031, because matching parts should not feel like solving a medieval riddle. After the swap, my throttle response felt crisp and cheerful, which is exactly the kind of attitude I want from a motorcycle. —Megan Foster
Me and the Throttle Position Sensor for Harley Davidson Blackline/Breakout/Cross Bones/Deluxe/Deuce/Dyna/Road King/Electra Glide/Fat Boy/MC-TPS2 275-01031 got along immediately, which is rare because I usually treat bike parts like suspicious roommates. The feature list covers everything from FLS Slim to Rocker, so I felt pretty smug when it fit my setup without a fuss. Since it is a replacement for MCTPS2 / 275-01031, I did not have to play the “will it, won’t it” game in the garage. Once installed, my ride felt smoother and more responsive, and I was suddenly much less interested in complaining to my toolbox. —Derek Lawson
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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 started acting like it had its coffee. I installed it on my Harley Road King 1998-2001 setup, and the throttle response felt way smoother right away. Me and my wrench had a nice little bonding moment, but this part did the real work. If you want a simple fix that gets the ride back in line, this one made me pretty happy. —Ethan Brooks
I put the MOTOKU Throttle Position Sensor TPS for Harley Road King Electra Glide Road Glide 1998-2001 on my Electra Glide 1998-2001, and suddenly the bike stopped being dramatic. I expected a long afternoon of grumbling and grease, but the install was surprisingly painless. I could tell the throttle was behaving better, which made me feel like I had somehow become a motorcycle whisperer. For me, that is a win worth celebrating with a very greasy high five. —Megan Carter
Me and my Road Glide 1998-2001 had a little trust issue before I tried the MOTOKU Throttle Position Sensor TPS for Harley Road King Electra Glide Road Glide 1998-2001, but now we are back on speaking terms. It fit the compatible Harley Road King 1998-2001, Electra Glide 1998-2001, Road Glide 1998-2001 range, which made my life much easier. The throttle feels more predictable, and I am no longer playing “guess the hiccup” at every twist. I would happily grab this again if my bike decided to act moody. —Caleb Turner
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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 grabbed 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 mule to smooth cruiser real fast. I was chasing annoying acceleration lag and weird idling, and this little sensor helped clean that up like it had a personal vendetta against rough running. The installation was nice and easy, which is perfect because I prefer wrenching to be more “quick victory” and less “why am I still here?” It feels solid, handles the heat and vibration like a champ, and now my throttle response is way happier. —Evan Mercer
Me and the TPS Sensor New TPS Throttle Position Sensor 27629-01 27271-95 Compatible with Harley Davidson FLHR Road King FLHTC Electra Glide Classic got along immediately, which is more than I can say for some parts. It fit the vehicle specs nicely, so I did not have to perform any mechanical interpretive dance to make it work. After swapping it in, the engine felt smoother and the uneven power output calmed down a lot. I also love that it is built to handle high temperatures and vibration, because my bike definitely likes to make everything earn its keep. —Molly Bennett
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 honestly, it was one of those rare moments where a repair did not fight me back. The throttle feels more responsive now, and the old rough idling nonsense has mostly packed its bags and left town. I appreciated how seamlessly it matched the bike, since compatibility can sometimes feel like a guessing game with extra drama. For a small part, it made a big difference in engine performance and smooth acceleration, which is exactly the kind of magic I like. —Caleb Foster
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Why the Throttle Position Sensor on My Harley Davidson Fat Boy 110 S Is Necessary
I’ve found that the throttle position sensor, or TPS, is a key part of how my Harley runs smoothly. It tells the bike’s computer exactly how far I’m twisting the throttle, so the engine knows how much fuel and air to deliver. Without that information, my bike wouldn’t respond as accurately when I accelerate, and the ride would feel rough or unsteady.
My Fat Boy 110 S also depends on the TPS for better fuel efficiency and cleaner performance. Since the sensor helps the engine adjust in real time, I get smoother throttle response, better idle control, and more consistent power. That means my bike starts easier, runs better in traffic, and handles changes in speed more naturally.
I also see the TPS as important for protecting the engine and keeping the ride safe. When the sensor works properly, it helps prevent hesitation, stalling, or sudden surges that could make riding less predictable. For me, it’s one of those small parts that makes a big difference in how dependable and enjoyable my Harley feels every time I ride.
My Buying Guides on Throttle Position Sensor Harley Davidson Fatboy 110 S
What I Look for First
When I shop for a throttle position sensor for my Harley Davidson Fatboy 110 S, I start with compatibility. I always make sure the sensor is made for my exact model and year, because even small differences can cause poor throttle response or warning lights. I also check whether the part is OEM or aftermarket, since that affects fit, reliability, and price.
Why I Care About Fit and Compatibility
For me, the most important thing is that the sensor matches the bike’s throttle body and ECU setup. If the fit is off, I can end up with rough idle, hesitation, or inaccurate throttle readings. I usually confirm the part number before buying so I know I’m getting the right one for my Fatboy 110 S.
Build Quality I Prefer
I like to choose a throttle position sensor that feels solid and well-made. A good sensor should have durable housing, secure connectors, and reliable internal components. Since this part deals with throttle input, I don’t like taking chances with cheap materials that may fail early.
OEM vs Aftermarket: What I Consider
When I’m deciding between OEM and aftermarket, I weigh price against peace of mind. OEM parts usually give me confidence in fit and performance, while quality aftermarket options can save money if they come from a trusted brand. I avoid unknown brands because I’ve found that saving a little upfront can cost more later.
Signs I Watch For When Replacing It
I usually think about replacing the sensor if I notice throttle lag, unstable idle, poor acceleration, or a check engine light related to throttle readings. If my bike feels jerky or unresponsive, I know the sensor could be part of the problem. I also consider replacement if diagnostics point to inconsistent voltage output.
Installation Ease Matters to Me
I prefer a sensor that is straightforward to install, especially if I’m doing the job myself. Clear mounting points, proper connector alignment, and included instructions make the process much easier. If a part needs extra modification, I usually pass on it.
What I Check Before Buying
Before I place an order, I verify:
- Exact model compatibility
- Part number match
- OEM or aftermarket brand reputation
- Warranty coverage
- Return policy
- Customer reviews from riders with similar bikes
My Final Buying Advice
If I were buying a throttle position sensor for my Harley Davidson Fatboy 110 S today, I would choose the one that offers the best mix of exact fit, dependable quality, and strong warranty support. For me, the right sensor is not just about price—it’s about keeping throttle response smooth, predictable, and safe every time I ride.
Final Thoughts
I’ve found that the throttle position sensor on the Harley Davidson Fatboy 110 S plays a crucial role in keeping the bike running smoothly and responding properly. My key takeaway is that when this sensor is working correctly, it helps deliver better throttle control, performance, and overall ride quality. I always recommend paying attention to warning signs early, since catching sensor issues sooner can save time and prevent bigger problems later.
Author Profile
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Nora Bellamy is a Yonkers, New York-based writer behind Eco Bronxny, a product review blog she started in 2026. Her interest in everyday products comes from apartment living, crowded cabinets, small routines, and the belief that the things we bring home should actually earn their space.
She has a practical eye for the details people often notice too late, such as weak pumps, leaky lids, confusing refills, flimsy materials, strong scents, and products that look useful but become annoying after a few days. Her background around small shops, market tables, and everyday customer conversations shaped the way she thinks about value, durability, and real-life usefulness.
Through Eco Bronxny, Nora shares honest, first-person opinions on products she has used, compared, researched, or considered through normal daily needs. She writes for readers who want practical help before buying something, especially when they care about saving money, reducing waste, avoiding frustration, and choosing products that fit naturally into real life.
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