---
product_id: 12612296
title: "Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm for Jeep JK"
brand: "rubicon express"
price: "¥15958"
currency: JPY
in_stock: false
reviews_count: 8
url: https://www.desertcart.jp/products/12612296-rubicon-express-re3757-rear-upper-super-flex-adjustable-control-arm
store_origin: JP
region: Japan
---

# Optimized for Jeep JK Precision adjustable fit Heavy-duty 10 lb build Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm for Jeep JK

**Brand:** rubicon express
**Price:** ¥15958
**Availability:** ❌ Out of Stock

## Summary

> 🚙 Elevate your Jeep JK’s off-road game with precision and power!

## Quick Answers

- **What is this?** Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm for Jeep JK by rubicon express
- **How much does it cost?** ¥15958 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/12612296-rubicon-express-re3757-rear-upper-super-flex-adjustable-control-arm)

## Best For

- rubicon express enthusiasts

## Why This Product

- Trusted rubicon express brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored for Jeep JK:** Vehicle-specific design ensures perfect compatibility and performance.
- • **Trusted Industry Leader:** Rubicon Express quality backed by warranty for peace of mind.
- • **Adjustable Super-Flex Control:** Fine-tune your suspension for superior off-road articulation and ride comfort.
- • **Driver’s Side Precision Fit:** Engineered for exact placement on the upper rear driver’s side for seamless installation.
- • **Durable Heavy-Duty Construction:** Built to withstand rugged terrain with a robust 10-pound steel frame.

## Overview

The Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm is a heavy-duty, vehicle-specific suspension upgrade designed for Jeep JK models. Weighing 10.05 pounds and crafted for the driver’s side upper rear position, it offers adjustable flexibility for enhanced off-road performance and durability, backed by Rubicon Express’s trusted warranty.

## Description

Made With High Strength Steel. Features Rebuildable/Adjustable Super Flex Joint.

## Features

- Rubicon Express a trusted industry leader
- Country of Origin: CHINA
- Warranty: Yes
- Rubicon Express

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Rubicon Express |
| Fit Type | Vehicle Specific Fit |
| Auto Part Position | Upper |
| Orientation | Drivers Side |
| Manufacturer | Rubicon Express |
| UPC | 614901440652 |
| Global Trade Identification Number | 00614901440652 |
| OEM Part Number | RE3757 |
| Item Weight | 10.05 pounds |
| Product Dimensions | 24.5 x 4.3 x 4.3 inches |
| Item model number | RE3757 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | RE3757 |

## Product Details

- **Brand:** Rubicon Express
- **Fit Type:** Vehicle Specific Fit
- **Auto Part Position:** Upper
- **Orientation:** Drivers Side
- **Manufacturer:** Rubicon Express

## Images

![Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm for Jeep JK - Image 1](https://m.media-amazon.com/images/I/616FNRQHHML.jpg)
![Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm for Jeep JK - Image 2](https://m.media-amazon.com/images/I/61lmURaEW5L.jpg)
![Rubicon Express RE3757 Rear Upper Super-Flex Adjustable Control Arm for Jeep JK - Image 3](https://m.media-amazon.com/images/I/61tdbyuUG7L.jpg)

## Questions & Answers

**Q: Does it matter how much of a lift you have? i know that they are adjustable... so i'm kind of being captain obvious i just want to make sure...**
A: I would say up to a 4" lift is ok. Anything higher than that, you'll want to go with a long-arm kit. I have these on a 4" lift, and the ride is pretty rough because of the suspension geometry (any short-arm control arms on that tall of a lift are going to be rough).

**Q: Is this individual? Or sold as a pair?**
A: It is a pair

**Q: Does the pair come ready to install, including the bushes and sleves?**
A: Yes it does.

**Q: I added a 3.5 inch lift to my jku and now the back tire is to close to frame. Will this correct it?**
A: You will need both upper and lower adjustable control arms to move the axel back to its original position.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Much stronger than stock and look better.
*by V***G on August 9, 2023*

Replaced my stock arms and extended these 1/4 inch over stock to push my axle back a smidge. They worked perfect. They were a bit of a pain for a driveway install but I got it done. It wasn't their fault as I believe any upper arm would have been just as difficult. Making them longer than stock is what made it more different to get them in place. I liked that the grease fittings on the frame side can be installed on either side of the bushing and comes with a plug for the hole not used.

### ⭐⭐⭐⭐⭐ Works with 3" lift
*by G***N on September 18, 2022*

I set them at 17 11/16". I didn't measure drive line angle, but it got my spring away from the track bar bolt on the the relocation bracket. Seems to have improved the ride a bit.

### ⭐⭐⭐⭐⭐ Easy to install
*by M***L on March 18, 2019*

If you lift your Jeep you'll need a pair of these bad boys to correct your pinion angle. Easy to install in the garage with a floor jack and basic tools.

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**Shop now:** [https://www.desertcart.jp/products/12612296-rubicon-express-re3757-rear-upper-super-flex-adjustable-control-arm](https://www.desertcart.jp/products/12612296-rubicon-express-re3757-rear-upper-super-flex-adjustable-control-arm)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-15*