---
product_id: 21881929
title: "FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black"
brand: "fast"
price: "¥415449"
currency: JPY
in_stock: true
reviews_count: 9
category: "Fast"
url: https://www.desertcart.jp/products/21881929-fast-lsxr-102mm-intake-manifold-for-ls1-ls2-and-ls6
store_origin: JP
region: Japan
---

# Advanced polymer runs cooler & lighter than aluminum Modular removable runners for easy porting 102mm large air inlet for max airflow FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black

**Brand:** fast
**Price:** ¥415449
**Availability:** ✅ In Stock

## Summary

> 🏁 Unlock LS Power with Style & Precision – Don’t Get Left Behind!

## Quick Answers

- **What is this?** FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black by fast
- **How much does it cost?** ¥415449 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/21881929-fast-lsxr-102mm-intake-manifold-for-ls1-ls2-and-ls6)

## Best For

- fast enthusiasts

## Why This Product

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

## Key Features

- • **C.A.R.B. Approved:** Legal performance upgrade with certification no. D-279-8 for peace of mind
- • **Sleek Black Finish:** Eye-catching design that elevates your LS engine’s under-hood aesthetics
- • **Boost Your Horsepower:** Longer runners & bigger inlet deliver 10-25 HP gains without sacrificing low-RPM torque
- • **Customizable Performance:** Modular, removable runner design allows effortless disassembly and precision porting
- • **Lightweight & Cool Running:** Advanced polymer construction reduces weight and heat soak compared to aluminum

## Overview

The FAST LSXr 102mm Intake Manifold is a high-performance, vehicle-specific upgrade for LS1, LS2, and LS6 engines. Featuring a larger 102mm air inlet and longer runners, it delivers bolt-on 10-25 horsepower gains while maintaining low-end torque. Its modular, removable runner design enables easy porting and customization. Constructed from advanced polymer, it’s lighter and runs cooler than traditional aluminum manifolds. Finished in sleek black, it combines performance with striking aesthetics and is C.A.R.B.-approved for street legality.

## Description

Now available in a sleek, black design, FAST 102mm LSXR and LSXRT Intake Manifolds optimize airflow material and utilize a multi-piece design to provide bolt-on 10-25 horsepower gains. With longer, less restrictive runners and a larger air inlet than stock versions, these FAST 102mm manifolds deliver added horsepower without compromising low-RPM torque. The 102mm low-restriction design yields maximum performance, while a modular, removable runner design allows for easy disassembly and porting. Constructed from an advanced polymer material and featuring an eye-catching black finish, FAST 102 LSXR and LSXRT intakes are lighter than aluminum and run much cooler. The LSXR design is available in three port configurations for LS1/2/6, LS3 and LS7 applications, and is a direct performance replacement to fit stock accessories. Meanwhile the LSXRT is a direct fit for 4.8, 5.3 and 6.0L trucks, as well as engines without clearance concerns. When combined with popular LS upgrades like FAST Big Mouth Throttle Bodies the performance gains are even more pronounced. The manifolds are C.A.R.B.-approved no. D-279-8.

Review: Vroooom!! - I used to have one of these intake manifolds on my LS1. Years ago I started the process of turbocharging my car and I must have bumped my head on something because I sold it and bought a Holley intake. While Holley does make a nice intake I missed the Fast intake as I felt it was more appropriate for my build. The " best usable" RPM range of the Fast is around 2-7k rpm, exactly where my engine makes power best. It's lightweight, won't heatsoak, and its very well made. For a cathedral port LS engine I firmly believe that this is a solid upgrade. I'm running a 92mm throttle with a velocity ring (which unfortunately can be difficult to find nowadays), and 10lbs of boost. I made sure to follow the directions exactly when installing, boost leak tested it up to 20psi, and did not have a single leak. I'm very happy to have a Fast intake again, the car is running great and making some good power.
Review: Comes with most parts you will need, but not all. - Be prepared to spend some extra money on miscellaneous parts that dont come with it. Bought this after using a FAST 92 intake, which is very good. This is just better, and with a 102mm tb, the airflow is incredible. Picked up power all the way through the RPM range.

## Features

- Longer runners & larger air inlet than stock deliver added HP while maintaining low-RPM torque
- Available in a sleek black finish for stunning good looks when installed on any LS engine
- Modular, removable runner design allows for easy disassembly & porting
- Advanced polymer material makes intake lighter than aluminum & run much cooler
- C.A.R.B.-approved no. D-279-8
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00VS6GYRI |
| Best Sellers Rank | #325,800 in Automotive ( See Top 100 in Automotive ) #296 in Automotive Replacement Engine Intake Manifolds |
| Brand | FAST |
| Customer Reviews | 4.3 4.3 out of 5 stars (62) |
| Date First Available | April 7, 2015 |
| Exterior | Polymer |
| Is Discontinued By Manufacturer | No |
| Item Weight | 19.45 pounds |
| Item model number | 146302B |
| Manufacturer | Fast |
| Manufacturer Part Number | 146302B |
| Model | 146302B |
| OEM Part Number | 88894339 |
| Product Dimensions | 28.1 x 16.4 x 10.1 inches |

## Images

![FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black - Image 1](https://m.media-amazon.com/images/I/61eVmIs309L.jpg)

## Questions & Answers

**Q: What other parts will i need to install on 01 denali LS2**
A: This is the car version they make a truck version it the lsxrt and I think the lsxrt may use the factory fuel rail

**Q: What is the name off the plastic peice u cut off**
A: We do not have any piece you cut off on our manifold.

**Q: Wil this work on a '09 6.2l ls3/l92?**
A: Larry,The LS3/L92 has rectangle intake ports & is not compatible with this manifold, however part #146102B is designed for that application. We have it available for purchase here on Amazon.

**Q: What is the name off the plastic peice u cut off**
A: We do not have any piece that you would cut off on our manifolds.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Vroooom!!
*by Z***D on January 16, 2026*

I used to have one of these intake manifolds on my LS1. Years ago I started the process of turbocharging my car and I must have bumped my head on something because I sold it and bought a Holley intake. While Holley does make a nice intake I missed the Fast intake as I felt it was more appropriate for my build. The " best usable" RPM range of the Fast is around 2-7k rpm, exactly where my engine makes power best. It's lightweight, won't heatsoak, and its very well made. For a cathedral port LS engine I firmly believe that this is a solid upgrade. I'm running a 92mm throttle with a velocity ring (which unfortunately can be difficult to find nowadays), and 10lbs of boost. I made sure to follow the directions exactly when installing, boost leak tested it up to 20psi, and did not have a single leak. I'm very happy to have a Fast intake again, the car is running great and making some good power.

### ⭐⭐⭐⭐⭐ Comes with most parts you will need, but not all.
*by J***. on August 7, 2025*

Be prepared to spend some extra money on miscellaneous parts that dont come with it. Bought this after using a FAST 92 intake, which is very good. This is just better, and with a 102mm tb, the airflow is incredible. Picked up power all the way through the RPM range.

### ⭐⭐⭐⭐⭐ Impressive proformance
*by M***. on May 14, 2025*

You can definitely tell a difference, it took me 2 weekend's to install with a bad back. I installed on a C6 corvette. Easy install, I just watched YouTube videos and not one problem. I would definitely spend the money on the FAST gaskets. Take pics of all your hose connections and should be breeze. I'm running stock air box, stock TB. X4 tune and mainfold together sings very well.

## Frequently Bought Together

- FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black
- COMP Cams O-Ring

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**Shop now:** [https://www.desertcart.jp/products/21881929-fast-lsxr-102mm-intake-manifold-for-ls1-ls2-and-ls6](https://www.desertcart.jp/products/21881929-fast-lsxr-102mm-intake-manifold-for-ls1-ls2-and-ls6)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-13*