---
product_id: 3747152
title: "42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart"
brand: "red line"
price: "KD 12.19"
currency: KWD
in_stock: true
reviews_count: 13
category: "Red Line"
url: https://www.desertcart.com.kw/products/3747152-42904-v-twin-primary-case-oil-for-use-with-utvs
store_origin: KW
region: Kuwait
---

# Reduces clutch wear & heat Friction-balanced formula Universal fit for V-Twin engines 42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart

**Brand:** red line
**Price:** KD 12.19
**Availability:** ✅ In Stock

## Summary

> 🏍️ Ride smoother, last longer — clutch oil that means business!

## Quick Answers

- **What is this?** 42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart by red line
- **How much does it cost?** KD 12.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/3747152-42904-v-twin-primary-case-oil-for-use-with-utvs)

## Best For

- red line enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Compatibility:** Fits 1984+ V-Twin American motorcycles, ATVs, and sportbikes
- • **Proven Performance Boost:** Improves clutch operation for peak powersports performance
- • **Enhanced Clutch Longevity:** Cuts wear and heat to extend clutch life significantly
- • **Trusted Legacy Since 1979:** Red Line’s no-compromise formula keeps your ride elite
- • **Precision Friction Balance:** Optimized clutch slip control for smoother rides

## Overview

Red Line 42904 V-Twin Primary Case Oil is a friction-balanced synthetic oil designed specifically for wet-diaphragm spring clutches in V-Twin American motorcycles, ATVs, and sportbikes. It reduces clutch slip, wear, and operating temperature, enhancing clutch performance and lifespan. Compatible with Evolution, Twin Cam, and similar aftermarket engines from 1984 onward, this 1-quart oil is a trusted choice since 1979 for riders demanding superior protection and performance.

## Description

Buy Red Line 42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart: Engine Oil - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Buy this you won’t regret it - Great stuff I always use Red Line products in my 08 Dyna lowrider.
Review: Good stuff - Great product that I've used for years

## Features

- FRICTION BALANCED CASE OIL - Most synthetics are too slippery for clutch operation. Our V-Twin Primary Case Oil is a balanced oil limiting slip and performing a smoother operation
- BOOSTS VEHICLE PERFORMANCE - Improves clutch operation while reducing wear and temperature, providing a longer clutch lifespan
- PERFORM & PROTECT - This product is for use in the primary chaincase with wet-diaphragm spring clutches. Perfect for Motorcycles, ATVs, and Powersports
- PRIMARY CASE OIL - For 1984-to-present V-Twin American motorcycle engines, including Evolution, Twin Cam, and aftermarket engines of similar design
- WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0053O9EUA |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #14,882 in Automotive ( See Top 100 in Automotive ) #182 in Motor Oils |
| Brand | Red Line |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,682) |
| Date First Available | January 30, 2010 |
| Exterior | Painted |
| Flash Point | 232 Degrees Celsius |
| Global Trade Identification Number | 00083522429047 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.7 pounds |
| Item model number | 42904 |
| Manufacturer | Red Line |
| Manufacturer Part Number | 42904 |
| Model | 42904 |
| OEM Part Number | 42904 |
| Product Dimensions | 3.9 x 4.9 x 9 inches |
| Size | 1 Quart |
| UPC | 083522429047 |
| Vehicle Service Type | Car |
| Viscosity | 75W/80W/75W80 sae_grade |

## Product Details

- **Brand:** Red Line
- **Liquid Volume:** 32 Fluid Ounces
- **Package Information:** Bottle
- **Vehicle Service Type:** Car
- **Viscosity:** 75W/80W/75W80 sae_grade

## Images

![42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart - Image 1](https://m.media-amazon.com/images/I/71pFEcmeYZL.jpg)

## Questions & Answers

**Q: What color is the fluid?**
A: The primary case fluid is amber colored.  You may be thinking about the Heavy Shockproof Transmission fluid which is pink.

**Q: Can this be used in a can am outlander atv?**
A: this is for a wet clutch where the transmission and primary do not share the same fluid

**Q: Any compatibility issues removing amsoil from primary and replacing with red line?**
A: Don't know I was running HD primary oil but I don't think there would be any issues it doesn't circulate through the engine or tranny.

**Q: What computer part on my Harley-Davidson can I put on and hook up to the computer to get in more rapid response from my throttle**
A: You need a tuner from Harley, or another maker,TTS3 , etc. and program to be able to talk to your CPU .
The connection is under my seat,it differs with year and model bike.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Buy this you won’t regret it
*by D***K on November 29, 2025*

Great stuff I always use Red Line products in my 08 Dyna lowrider.

### ⭐⭐⭐⭐⭐ Good stuff
*by W***M on November 26, 2025*

Great product that I've used for years

### ⭐⭐⭐⭐⭐ Excellent!
*by O***R on December 3, 2025*

Red Line has been a trusted source of oils for many years. I have used it in all of my Harley Davidson touring bikes for decades. I change my fluids regularly and have never had an engine wear issue while using Red Line full synthetic. I highly recommend Red Line for V-Twin motorcycles.

## Frequently Bought Together

- Red Line 42904 V-Twin Primary Case Oil, for use with UTVs, ATVs and Sportbikes - 1 Quart
- Red Line 42804 V-Twin Transmission Oil with Shockproof - 4 Quarts
- K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Harely Davidson Motorcycles, KN-171B

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**Shop now:** [https://www.desertcart.com.kw/products/3747152-42904-v-twin-primary-case-oil-for-use-with-utvs](https://www.desertcart.com.kw/products/3747152-42904-v-twin-primary-case-oil-for-use-with-utvs)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-01*