Installation Time
(approx) 6 Hours
Difficulty Level:
Mechanical expertise or professional installation required.
FREE 1 to 3-Day Delivery on Orders $119+ Details
Talk to a Wrangler Sales Tech
1-877-870-8556
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Alloy USA Dana 40 Rear Axle Ring and Pinion Gear Kit; 4.10 Gear Ratio (18-23 Jeep Wrangler JL Rubicon)
Item J139142-JL
Product Information
Features, Description, Q&A, Specs & Installation
Features
- Engineered for Street or Off-Roading Applications
- Designed with a 4.10 Gear Ratio
- Features a 30-Spline Pinion
- Comes with 10 Ring Gear Bolts
- Industrial-Grade 8620 Steel Alloy
- Professional Installation Recommended
- Covered by a 10-Year Warranty
- Fits All 2018-2023 Jeep Wrangler JL Rubicon Models
Description
Improved Off-Road Performance. Set your Jeep up for bigger off-road adventures with this 4.10 Gear Ratio Alloy USA Dana 40 Rear Axle Ring and Pinion Gear Kit. Featuring a lower ring and pinion gear ratio, this kit lets you install a larger set of tires on your trail-going vehicle so you can easily conquer any type of terrain without compromising your vehicle’s power and efficiency.
Increased Efficiency. Outfitting your Jeep with a larger set of tires makes the engine work twice as hard. This increases fuel consumption and reduces your vehicle’s power. With a ring and pinion gear that has a lower ratio such as this Alloy USA ring and pinion gear kit, your Jeep can regain power and improve its fuel efficiency.
Heavy-Duty Quality. Built for the most rugged adventures, this Ring and Pinion Gear Kit is made from industrial-grade forged 8620 alloy steel to ensure maximum strength. Its manufacturing process uses innovative Gleason gear cutting technology for unrivaled precision and excellent performance.
Professional Installation Recommended. Installing a new set of ring and pinion gear on your vehicle may involve some intricate steps. That’s why ExtremeTerrain recommends professional installation to get the best out of this kit.
Covered by a 10-Year Warranty. To ensure the quality of this product, Alloy USA backs this Rear Axle Ring and Pinion Gear Kit with a warranty against structural defects for 10 years from the sale date. Some exclusions apply. For more information, please refer to the manufacturer’s website.
Application. This 4.10 Gear Ratio Alloy USA Dana 40 Rear Axle Ring and Pinion Gear Kit is designed to be used on all the 2018-2023 Jeep Wrangler JL Rubicon models.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Ring Gear
- (1) Pinion Gear
4.6
Reviews of Alloy USA Drivetrain Products (297)
Reviews of Alloy USA Drivetrain products have an average rating of 4.6 out of 5
Questions & Answers
10 More Questions
Sponsored Ad
Word On The Trail
The site is easy to use and follow along!! One of the things I really enjoy with Extreme Terrain is that you are able to shop via your specific Jeep! Just input the info and the site will let you know if what you are looking at will fit or is compatible with your specific Jeep...Love It!!!
Meet Our Team
Steven H's, 2017 Wrangler JK Rubicon
Customer Service Quality Assurance
I got into Jeeps at an early age, as a child around 3-4 year of age my parts got me a power wheel Jeep and the rest was history. Growing up I always wanted a Jeep, from the day I started driving I spent my days behind the wheel of a Jeep branded vehicle, which has not changed.
I got into Jeeps at an early age, as a child around 3-4 year of age my parts got me a power wheel Jeep and the rest was history. Growing up I always wanted a Jeep, from the day I started driving I spent my days behind the wheel of a Jeep branded vehicle, which has not changed.
Sponsored Ad
