---
product_id: 752918500
title: "325mm/12.8\" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox"
brand: "hegeiisy"
price: "¥58936"
currency: JPY
in_stock: true
reviews_count: 5
category: "Hegeiisy"
url: https://www.desertcart.jp/products/752918500-325mm-12-8-rebound-damping-universal-7mm-spring-rear-suspension
store_origin: JP
region: Japan
---

# Adjustable Spring Preload Max Load 250kg/pair Precision CNC Machined 325mm/12.8" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox

**Brand:** hegeiisy
**Price:** ¥58936
**Availability:** ✅ In Stock

## Summary

> 🏍️ Upgrade your ride with precision-tuned suspension — because comfort is the new power move!

## Quick Answers

- **What is this?** 325mm/12.8" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox by hegeiisy
- **How much does it cost?** ¥58936 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/752918500-325mm-12-8-rebound-damping-universal-7mm-spring-rear-suspension)

## Best For

- hegeiisy enthusiasts

## Why This Product

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

## Key Features

- • **Tailored Ride Comfort:** Adjustable 7mm spring preload lets you fine-tune suspension stiffness for your unique riding style.
- • **Heavy-Duty Performance:** Supports up to 250kg per pair, perfect for demanding off-road and street conditions.
- • **Smooth & Safe Handling:** Low-friction piston rod and high-standard N.O.K oil seals ensure superior damping and ride stability.
- • **Universal Compatibility:** Fits a wide range of motorcycles, ATVs, and dirt bikes — from CB400SF to Nmax and beyond.
- • **Engineered for Endurance:** Built with hard anodized alloy steel and aluminum for over 1 million cycles of durability.

## Overview

This 325mm (12.8") rear suspension air shock absorber features a 7mm adjustable spring, hard anodized alloy construction, and precision CNC machining. Designed for motorcycles, ATVs, and dirt bikes, it supports up to 250kg per pair and offers enhanced damping with low-friction components and high-quality Japanese oil seals. Compatible with a broad range of models, it delivers durable, customizable suspension for improved handling and rider comfort.

## Description

Description：Material: Solid Steel+Aluminium Alloy. Eye To Eye Center Length: 325mm (12.8 inch). Eye thickness: 21mm. Thickness of the spring: 7mm. Spring width: 65mm. Max loading: 250kg/pair 550lb/pair. The shock absorber is a modified universal type, compatible with most MTB Motorcycle Motocross. Before purchasing, please confirm the mounting hole distance. Universal fit for most vehicles, like mt07 ano 2016 FJR 1300 XR250 CBR 125 R Ninja Ex 250 R CBR 1100 Xx Super Blackbird NC750D CBR600RR CBR1000RR CB500 YZF-R1 YZF-R6 YZF-125 XC EXC XCF R800GS R1200GS, etc. The spring of this shock absorber is adjustable, but the length is not adjustable.

Review: スプリング少し柔らかめ - スプリング少し柔らかめです 体重65kgだとプリロードでギリ調整できます。 乗り心地は悪くないです。後は耐久性次第です。
Review: まあ良い - 2003年式 sc54 CB1300SFに使用 純正はロッドにオイルが垂れてきて 中身ゼロだった。 長さは純正より5mm程長いかもしれないが 車体下にジャッキ当ててスイングアーム めいっぱい伸ばせば入る。 製品の取付は車両上側の取り付け部の メタルが車体側のサイズと合わないので バイスでゴムブッシュを残して取り外し 車両にはその状態でポン付けです。 ちなみに上側(タンク側)の減衰ダイヤルは 多分ダミー。 下側のダイヤルは効く様です。 バネがCB純正より細く レートが低いため、ポン付けだと1G沈み込みが大きく、結構イニシャルをかける必要あり。 そこを調整して走らせた感じは 純正同等、少し柔らかい(速い)？と思います。 総じて安い値段ですから古い車両を通常使用に耐える延命措置としてはアリかなと思いました

## Features

- Eye thickness: 21mm. Thickness of the spring: 7mm. Spring width: 65mm. Max loading: 250kg/pair 550lb/pair.
- Recovery damping design, hard anodized, low friction piston rod and eyelet, built-in adjustable preload for all applications. Precision CNC machined components, a variety of spring rates are available to use with a variety of riders. Multiple bearing size options for more street and retro bikes.
- Oil seal by N.O.K (japanese high standard). The eye of shock has tensile strength moree than 2000kgf. The dumper and spring designed for long durability(more than 1 million).
- High-performance air shock absorber: The suspension provides smoother driving and better overall damping management, improving driving comfort, motorcycle handling and driving safety. It is good quality and replacement for some Gokart Quad and ATV.
- Compatible with CB400SF (NC31/NC39/NC42), CB400SS/CL400, etc. The spring of this shock absorber is adjustable, but the length is not adjustable. XJR400 (4HM/RH02J), SR400/SR500, etc. GSX400 Impulse (GK79A/GK7CA), etc. Zephyr400 (body number: ZR400C). Most 50cc, 75cc, 90cc, 125cc, 150cc, 250cc, 300cc street cars, off-road vehicles, karts, ATVs, motorcycles and quad bikes.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BHV798PN |
| Auto Part Position | Rear |
| Auto part position | Rear |
| Best Sellers Rank | 902,451 in Automotive ( See Top 100 in Automotive ) 1,325 in Motorbike Chassis |
| Brand | Hegeiisy |
| Brand Name | Hegeiisy |
| Compatible with Vehicle Type | ATV, Bicycle, Car, Motorcycle |
| Country Of Origin | China |
| Customer Reviews | 3.9 out of 5 stars 17 Reviews |
| Exterior Finish | Aluminium |
| Exterior finish | Aluminium |
| Included Components | two shock absorbers |
| Item Type Name | Motorcycle Air Shock Absorber Rear Suspension |
| Manufacturer | Hegeiisy |
| Manufacturer Part Number | ZN56 |
| Manufacturer Warranty Description | One Year |
| Material | Alloy Steel , Aluminium |
| Material Type | Alloy Steel, Aluminium |
| Model Number | ZN56 |
| Style | Modern |
| Style Name | Modern |
| Vehicle service type | ATV, Bicycle, Car, Motorcycle |

## Product Details

- **Brand:** Hegeiisy
- **Auto part position:** Rear
- **Style:** Modern
- **Vehicle service type:** Motorcycle
- **Exterior finish:** Aluminium

## Images

![325mm/12.8" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox - Image 1](https://m.media-amazon.com/images/I/41tMHuxlxBL.jpg)
![325mm/12.8" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox - Image 2](https://m.media-amazon.com/images/I/41on1ic6R+L.jpg)
![325mm/12.8" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox - Image 3](https://m.media-amazon.com/images/I/51JUyDZnUkL.jpg)
![325mm/12.8" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox - Image 4](https://m.media-amazon.com/images/I/51h74kwSK0L.jpg)
![325mm/12.8" Rebound Damping Universal 7mm Spring Rear Suspension Air Shock Absorber MTB Motorcycle For BWS 125 Dirt Bike Gokart Quad ATV Nmax Xmax Aerox - Image 5](https://m.media-amazon.com/images/I/51uMz+LQtZL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ スプリング少し柔らかめ
*by A***ー on 12 September 2024*

スプリング少し柔らかめです 体重65kgだとプリロードでギリ調整できます。 乗り心地は悪くないです。後は耐久性次第です。

### ⭐⭐⭐⭐ まあ良い
*by に***し on 12 October 2025*

2003年式 sc54 CB1300SFに使用 純正はロッドにオイルが垂れてきて 中身ゼロだった。 長さは純正より5mm程長いかもしれないが 車体下にジャッキ当ててスイングアーム めいっぱい伸ばせば入る。 製品の取付は車両上側の取り付け部の メタルが車体側のサイズと合わないので バイスでゴムブッシュを残して取り外し 車両にはその状態でポン付けです。 ちなみに上側(タンク側)の減衰ダイヤルは 多分ダミー。 下側のダイヤルは効く様です。 バネがCB純正より細く レートが低いため、ポン付けだと1G沈み込みが大きく、結構イニシャルをかける必要あり。 そこを調整して走らせた感じは 純正同等、少し柔らかい(速い)？と思います。 総じて安い値段ですから古い車両を通常使用に耐える延命措置としてはアリかなと思いました

### ⭐⭐⭐⭐⭐ なかなか良いショックです！
*by A***ー on 2 October 2024*

グラストラッカーNJ47Aにビッグボーイのスイングアームを付けたのでノーマルショックだとお尻が下がってしまうのでこちらの370mmをチョイスしました。 前後のバランスが良くなったせいか乗心地もハンドリングも良い感じです。 グラストラッカーには高性能なショックより見た目重視でも良いでしょう。

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**Shop now:** [https://www.desertcart.jp/products/752918500-325mm-12-8-rebound-damping-universal-7mm-spring-rear-suspension](https://www.desertcart.jp/products/752918500-325mm-12-8-rebound-damping-universal-7mm-spring-rear-suspension)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-17*