---
product_id: 365245461
title: "ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926"
brand: "ict billet"
price: "₩174581"
currency: KRW
in_stock: false
reviews_count: 5
category: "Ict Billet"
url: https://www.desertcart.kr/products/365245461-ict-billet-usa-12-9-ls-transmission-flywheel-bolts-set
store_origin: KR
region: South Korea
---

# Grade 12.9 ultra-strong bolts BP coated corrosion defense Made in USA precision ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926

**Brand:** ict billet
**Price:** ₩174581
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Lock your LS build with bolts that mean business!

## Quick Answers

- **What is this?** ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926 by ict billet
- **How much does it cost?** ₩174581 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/365245461-ict-billet-usa-12-9-ls-transmission-flywheel-bolts-set)

## Best For

- ict billet enthusiasts

## Why This Product

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

## Key Features

- • **Precision Fit:** Custom M11-1.5 thread and 23.5mm length ensure OEM-perfect compatibility with GM LS series engines.
- • **Proudly American:** Crafted in the USA with meticulous quality control for professional-grade performance.
- • **No Washers Needed:** Flange head design eliminates washers, simplifying installation and enhancing reliability.
- • **Unmatched Strength:** Grade 12.9 bolts deliver 7.74 ksi shear strength for rock-solid engine builds.
- • **Corrosion Resistant:** BP coating prevents thread seizing and rust, extending bolt lifespan under extreme conditions.

## Overview

ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set offers six high-strength, grade 12.9 alloy steel flange bolts, custom-made in the USA for GM LS engines. Featuring BP corrosion-resistant coating and precise OEM thread specs, these bolts provide superior durability and a washer-free installation, trusted by engine builders for lasting performance.

## Description

LS Flexplate Bolts SetCompatible with: GM LS1, LS2, LS3, LS6, and LS7 series engines (and many more) with 6 bolt Crankshafts (manual and automatic transmission)M11-1.5 thread, 23.5mm length (OEM length, measured underneath head)Package Includes: 6 bolts12.9 high strength bolts (factory bolts are 10.9 rated)Custom made for ICT Billet in the USA! *Gen 5, LT and LSA engines use 8 bolt crankshafts (part number 551939) *LS9 engines require 9 bolt crankshafts

Review: High quality product for my engine build. Anything from ICT is a great solution. They fit as expected and look like they are higher quality than the OEM boots. They function as you would expect. My flywheel is still attached.
Review: Worked as advertised

## Features

- Made in the USA bolts
- Heavy duty, high strength, grade 12.9 bolts
- BP coated for long lasting corrosion protection and prevents threads from seizing
- No washers needed with these flange head bolts
- All ICT Billet metric flange bolts are custom made for us, right here in the USA!!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MG7QLDL |
| Brand | ICT Billet |
| Colour | Natural |
| Country of Origin | USA |
| Customer Reviews | 4.8 4.8 out of 5 stars (274) |
| Date First Available | 9 January 2020 |
| Exterior Finish | Natural |
| Fastener Type | Flange Bolt |
| Head Style | Flange |
| Head Type | Flange |
| Item Diameter | 11 Millimetres |
| Item Hardness | Grade 12.9 |
| Item Weight | 159 g |
| Item part number | 551926 |
| Manufacturer | ICT Billet |
| Manufacturer Grade | Grade 12.9 |
| Manufacturer Part Number | 551926 |
| Material | Alloy Steel |
| Maximum Shear Strength | 7.74 ksi |
| Metal Type | Alloy Steel, Aluminium |
| Net Quantity | 6.0 Count |
| Number of Pieces | 6 |
| OEM Part Number | 551926 |
| Size | M11-1.5 |
| Thread Class | 3A |
| Thread Size | M11 |
| Thread Style | Right Hand |
| Thread Type | M11-1.5 |
| UPC | 657814753495 |

## Product Details

- **Exterior Finish:** Natural
- **Head Style:** Flange
- **Manufacturer Grade:** Grade 12.9
- **Material:** Alloy Steel
- **Thread Size:** M11

## Images

![ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926 - Image 1](https://m.media-amazon.com/images/I/41PmUmyoP5L.jpg)
![ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926 - Image 2](https://m.media-amazon.com/images/I/41Tj3FSoluL.jpg)
![ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926 - Image 3](https://m.media-amazon.com/images/I/41f8-ZsjErL.jpg)
![ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926 - Image 4](https://m.media-amazon.com/images/I/41tB1vkFoIL.jpg)
![ICT Billet USA 12.9 LS Transmission Flywheel Bolts Set Flexplate Kit LS1 LS3 LS2 Crankshaft LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33 LH6 L92 L76 LY2 LY5 LY6 LC9 LH8 LMG L98 L99 551926 - Image 5](https://m.media-amazon.com/images/I/61OgLbtsagL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***E on 31 August 2025*

High quality product for my engine build. Anything from ICT is a great solution. They fit as expected and look like they are higher quality than the OEM boots. They function as you would expect. My flywheel is still attached.

### ⭐⭐⭐⭐⭐ Review
*by D***2 on 13 June 2025*

Worked as advertised

### ⭐⭐⭐⭐⭐ Review
*by A***L on 24 August 2025*

Does what they were meant to do, no issues.

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---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-29*