Fearless Gear of Kuna, Idaho

We are your leader in rear differential and drivetrain performance. We proudly serve customers in Boise, Kuna, Meridian, Eagle, Nampa, Caldwell and all surrounding areas.

rear differential rebuild boise
Differential
Services
rear differential boise
Axle & Driveline
Components
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Performance Builds
& Custom Applications

Customers We Serve

classic car differentials boise

Classic Cars

truck differentials boise

Trucks

SUV differentials boise

SUVs

drag race car differentials boise

Drag Race Cars

fleet vehicle differentials boise

Fleet Vehicles

off road truck differential kuna idaho

Over-Land Trucks

Founded by industry-veteran Vince Parisi, Fearless Gear began as a garage operation focused on precision differential builds and quickly grew into a full-service performance and repair facility.

We’ve been in operation since 1989 when we opened doors in Fresno, CA. Vince started building differentials in his garage and established a reputation for exceptional workmanship and attention to detail. Today Fearless Gear is located in Kuna, Idaho serving customers in Idaho and across the country.

why choose us

Why Choose Fearless Gear?

  • Over 35 years of experience in differential and rear-end work.
  • Specialized equipment and dedicated machine-shop for precision set-ups.
  • Local shop in Kuna serving the Treasure Valley, but with national shipping capability.
  • Straightforward communication from beginning conversations to finished job.
  • Focused niche expertise — we don’t try to be everything to everybody; our specialty is what we excel at, giving you confidence and solid results.

What Our Customers Are Saying

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UnKell 23 profile picture
UnKell 23
September 15, 2026
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Vince is an absolute wizard for gears. Fearless Gears is the ONLY place to go for gear work as far as I am concerned. Vince is extremely thorough and makes sure everything works perfectly. So glad I was recommended to him by another transmission shop and now my Tundra has more power, better gas mileage and rides as smooth as a Cadillac!
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Conrad Debris Services profile picture
Conrad Debris Services
August 21, 2026
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Vince does great, clean, and precise work. All around great guy to work with. Will definitely recommend him to anyone needing gear work done on their truck.
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Curtis Stoddard profile picture
Curtis Stoddard
August 18, 2026
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I had a serious bearing/axle problem - bordering on dangerous. Vince identified the issue, ordered new parts, and had everything ready for me to reassemble within a few days - for a very reasonable price. Then he apologized to me for having to drive all the way out to his shop! Hah, I was more than happy to make that drive and will gladly do it again anytime. My car was on the road the very next day. In looking around his shop, I saw all kinds of examples of his work, and his very thorough setup. I know he works on 4WD, racecars, and street cars. He's knowledgeable and has years of experience. I highly recommend Fearless Gears for any differential and rear end work! I put decals from businesses and suppliers on the firewall of my car, which I display with the hood up at car shows, so people can see what places I recommend. The Fearless Gears one is prominently added under there now for all to see!
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Marc Renz profile picture
Marc Renz
August 11, 2026
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The 9" rearend in my '66 F100 was completely shot. Vince upgraded the axles to 31 spline, added a TrueTrac locking differential, completely cleaned, rebuilt and painted the rearend. It looked brand new when I picked it up. It's been back together a couple of weeks now and not a drop of gear lube on the floor. Looks great and works great! Thanks Vince!
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Jacob Mccann profile picture
Jacob Mccann
August 3, 2026
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I had Vince regear my 2007 F-350 from 3.73s to 4.30s (front and rear), and I couldn't be happier with the experience. Ring and pinion work is one of those jobs where experience really matters, and Vince took the time to answer all of my questions, explain the process, and make sure everything was done right. Communication was excellent throughout the job, and he stood behind his work, which gave me a lot of confidence. Parts availability was a challenge due to current backorders, but Vince worked with me to come up with a solution and got everything completed professionally. The install is quiet, the truck drives great, and the gear setup feels exactly like it should. If you're looking for someone to set up gears correctly instead of just swapping parts, I'd highly recommend Vince. I'll definitely be using him again for future differential work.
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Rudy Koch profile picture
Rudy Koch
July 20, 2026
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Vince knows gears and takes pride in his work. Installed gears on my JL Rubicon and I love the added low end torque.
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Timothy Gria profile picture
Timothy Gria
July 4, 2026
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Vince the owner of Fearless Gear is Top Notch. He repaired my rear differential for my 04 Tacoma and it is working flawlessly. I would highly recommend this place to anyone.
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Superior Gutter & Roofing
July 1, 2026
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I have a highly modified Ram TRX that basically ruined my differential and transfer case. Fortunately a trusted individual recommended me to Vince at Fearless Gear. He is a super knowledgeable and honest guy and I feel very blessed to have crossed paths with him. Not only did he make the necessary repairs, but he took the time to find a billet part to withstand the extra horsepower and torque my motor puts out. He also did some modification to help relieve stress on my front axel that I wasn't even aware of. Vince took the time to inspect (and find) other broken parts like hidden sheered bolts, that most if not all other mechanics would not. He constantly kept me up to date with the progress and set expectations that were met and or exceeded. If you need front end work that he caters to, in my opinion, anyone that chooses to go elsewhere is making a huge mistake. On a side note, I knew my battery was close to its life expectancy prior to needing his services, as it was showing signs of dying several weeks earlier. The battery happened to die during the work (to no fault of Vince) and I brought a new battery with me when picking my ride up. Vince was kind enough to install the new one without even asking for anything in return, simply because that’s how he is. He is an honest man that wants to make his customers happy, and he seems to truly love what he does. Thank you Vince for the high quality work, going above and beyond, and for taking care of me and my truck like it was your own. Google needs to add a sixth star option for business like yours.
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Jeff Lane profile picture
Jeff Lane
June 23, 2026
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Contacted Fearless Gears for a noise in the rear-end on my 450 superduty they had it out when promised the truck performs perfectly Vince is very knowledgeable and skill set I couldn't be more pleased with Fearless Gears I will be a life long client. Thank you Fearless Gears
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Pete Szobonya profile picture
Pete Szobonya
June 4, 2026
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Vince is extremely knowledgeable, trustworthy, and professional. My Ram 1500, at 99,900 miles, needed the differential to be rebuilt. Vince knew right away what needed to be done and clearly explained it to me. I appreciate his straight forward approach and advice. He answered all my questions and got my truck’s differential rebuilt very quickly. Awesome attention to detail, my diff is quieter now than when it was new. He even did the initial gear break-in miles. He is a craftsman who takes pride in what he does which is so rare to find these days. I highly recommend Fearless Gear to anyone who needs their differential repaired or upgraded. On top of it all, the cost of the rebuild was very reasonable.
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