---
product_id: 31074433
title: "Rotrex (R50-3891-BLK) Black Series C38-91 Supercharger"
brand: "rotrex"
price: "VT17936"
currency: VUV
in_stock: false
url: https://www.desertcart.vu/products/31074433-rotrex-r50-3891-blk-black-series-c38-91-supercharger
store_origin: VU
region: Vanuatu
---

# 7.5:1 drive ratio 90,000 RPM speed 650 hp power Rotrex (R50-3891-BLK) Black Series C38-91 Supercharger

**Brand:** rotrex
**Price:** VT17936
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Elevate Your Ride: Power Meets Precision!

## Quick Answers

- **What is this?** Rotrex (R50-3891-BLK) Black Series C38-91 Supercharger by rotrex
- **How much does it cost?** VT17936 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/31074433-rotrex-r50-3891-blk-black-series-c38-91-supercharger)

## Best For

- rotrex enthusiasts

## Why This Product

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

## Key Features

- • **High-Speed Performance:** Achieve impeller speeds of up to 90,000 RPM for exhilarating acceleration.
- • **Unleash Unmatched Power:** Transform your ride with up to 650 hp, perfect for performance enthusiasts.
- • **Compact Design, Big Impact:** Maximize your engine's potential without compromising space or style.
- • **Versatile Engine Compatibility:** Designed for engines ranging from 2.4 to 6.0 L, making it a fit for a variety of vehicles.
- • **Innovative Traction Drive Technology:** Experience the cutting-edge Rotrex planetary traction drive for superior efficiency.

## Overview

The Rotrex (R50-3891-BLK) Black Series C38-91 Supercharger is a high-performance supercharger designed to deliver up to 650 horsepower for engines between 2.4 and 6.0 liters. Featuring a patented planetary traction drive with a 7.5:1 drive ratio, it achieves impressive impeller speeds of up to 90,000 RPM, making it an ideal choice for automotive enthusiasts looking to enhance their vehicle's performance.

## Description

The Rotrex C38-91 supercharger is the "big boy" C38. The unit has a fully Rotrex developed impeller wheel designed for better overall efficiency and features a sleek black housing.

## Features

- This compact unit is capable of producing up to 650 hp, on engine sizes ranging between 2.4-6.0 L; Using the patented Rotrex planetary traction drive, the C38-91 has a 7.5:1 drive ratio and can achieve impeller speeds up to 90,000RPM

## Images

![Rotrex (R50-3891-BLK) Black Series C38-91 Supercharger - Image 1](https://m.media-amazon.com/images/I/41-ObRJds0L.jpg)

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**Shop now:** [https://www.desertcart.vu/products/31074433-rotrex-r50-3891-blk-black-series-c38-91-supercharger](https://www.desertcart.vu/products/31074433-rotrex-r50-3891-blk-black-series-c38-91-supercharger)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-17*