---
product_id: 41906899
title: "Athena (P400250100011) 58mm 144cc Big Bore Cylinder Kit"
brand: "athena"
price: "€ 1052.61"
currency: EUR
in_stock: true
reviews_count: 1
category: "Athena"
url: https://www.desertcart.nl/products/41906899-athena-p400250100011-58mm-144cc-big-bore-cylinder-kit
store_origin: NL
region: Netherlands
---

# 144cc Big Bore Power Boost Widened Water Jackets for Superior Cooling Bolt-On Installation, No Machining Athena (P400250100011) 58mm 144cc Big Bore Cylinder Kit

**Brand:** athena
**Price:** € 1052.61
**Availability:** ✅ In Stock

## Summary

> 🔥 Power Up Your Ride with Athena’s Big Bore Boost! ⚡

## Quick Answers

- **What is this?** Athena (P400250100011) 58mm 144cc Big Bore Cylinder Kit by athena
- **How much does it cost?** € 1052.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/41906899-athena-p400250100011-58mm-144cc-big-bore-cylinder-kit)

## Best For

- athena enthusiasts

## Why This Product

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

## Key Features

- • **Advanced Cooling Tech:** Widened water jackets reduce heat loss, maximizing power and engine longevity.
- • **Race-Proven Power Upgrade:** Unlock raw 144cc performance designed to dominate Kawasaki KX 125 (2003-2007).
- • **Effortless Bolt-On Installation:** No machining needed—get back on track faster with step-by-step instructions.
- • **Complete Kit for Peak Performance:** Includes piston, rings, gaskets, and pin—plus easy re-jetting for ultimate tuning.
- • **Durable High-Performance Materials:** Nickel-carbide coated aluminum cylinder and molybdenum-coated forged piston for extended wear.

## Overview

Athena’s 58mm 144cc Big Bore Cylinder Kit is a precision-engineered upgrade for Kawasaki KX 125 (2003-2007), delivering race-proven power with a durable nickel-carbide coated aluminum cylinder and molybdenum-coated forged piston. Featuring widened water jackets for enhanced cooling and a bolt-on design requiring no machining, this kit ensures easy installation and reliable high-performance riding. Complete with all necessary components and installation instructions, it’s the ultimate upgrade for serious offroad enthusiasts.

## Description

Athena's Big Bore kit brings the raw power you have been missing in an easy to install, reliable package that bolts on with no machining needed in most cases, and includes easy-to-follow step-by-step installation instructions. Constructed from aluminum, the cylinder is lined with a nickel-carbide coating for durable, reliable performance, and the water jackets have been widened for a higher flow rate, cooling the cylinder, resulting in less power lost due to heat. Features a forged piston that's been molybdenum coated for high performance use and extended wear life. Includes: big bore cylinder, big bore piston, piston pin, piston pin rings, gasket kit. Note: To achieve optimum performance re-jet the carburetor with the available jet kits. Fits: Kawasaki KX 125 L.C. 2003-2007.

Review: Went together easy! - Well made kit! Went together easy!

## Features

- Athena's Big Bore kit brings the raw power you have been missing in an easy to install, reliable package that bolts on with no machining needed in most cases, and includes easy-to-follow step-by-step installation instructions
- Built from race proven designs to Kawasaki factory specifications
- Podium-finisher with world-class teams across all forms of high-performance racing including super cross, motocross, GNCC, superbike, and more
- Maximizes power and service life in Kawasaki Dirt Bikes and offroad vehicles
- Fits the following rides Kawasaki KX 125 2003-2007

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00IKIHWTQ |
| Best Sellers Rank | #3,757,674 in Automotive ( See Top 100 in Automotive ) #1,304 in Powersports Cylinder Heads |
| Brand | Athena |
| Customer Reviews | 5.0 5.0 out of 5 stars (4) |
| Date First Available | May 12, 2011 |
| Exterior | Painted |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.19 pounds |
| Item model number | P400250100011 |
| Manufacturer | Athena |
| Manufacturer Part Number | P400250100011 |
| Model | P400250100011 |
| Product Dimensions | 8.27 x 14.57 x 6.3 inches |

## Images

![Athena (P400250100011) 58mm 144cc Big Bore Cylinder Kit - Image 1](https://m.media-amazon.com/images/I/51bxS11jeLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Went together easy!
*by M***T on September 10, 2014*

Well made kit! Went together easy!

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**Shop now:** [https://www.desertcart.nl/products/41906899-athena-p400250100011-58mm-144cc-big-bore-cylinder-kit](https://www.desertcart.nl/products/41906899-athena-p400250100011-58mm-144cc-big-bore-cylinder-kit)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-01*