---
product_id: 721346
title: "Crampbuster CB4 Black Throttle Mounted Motorcycle Cruise Assist"
brand: "crampbuster"
price: "¥5279"
currency: JPY
in_stock: true
reviews_count: 13
category: "Crampbuster"
url: https://www.desertcart.jp/products/721346-crampbuster-cb4-black-throttle-mounted-motorcycle-cruise-assist
store_origin: JP
region: Japan
---

# Universal fit design Reduces wrist fatigue Tool-free install Crampbuster CB4 Black Throttle Mounted Motorcycle Cruise Assist

**Brand:** crampbuster
**Price:** ¥5279
**Availability:** ✅ In Stock

## Summary

> 🛵 Cruise smarter, ride stronger—never let wrist fatigue slow you down!

## Quick Answers

- **What is this?** Crampbuster CB4 Black Throttle Mounted Motorcycle Cruise Assist by crampbuster
- **How much does it cost?** ¥5279 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/721346-crampbuster-cb4-black-throttle-mounted-motorcycle-cruise-assist)

## Best For

- crampbuster enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Durable:** Lightweight plastic and rubber build with DOT certification for safety and reliability.
- • **Universal Compatibility:** Fits virtually all motorcycle grips, including heated grips and oversized handles.
- • **Ride Longer, Feel Stronger:** Dramatically reduces wrist cramping and fatigue on extended rides.
- • **Effortless Throttle Control:** Slide-on design lets you install in seconds—no tools needed.
- • **Intuitive Palm-Activated Operation:** Control throttle with natural hand pressure—no squeezing required.

## Overview

The Crampbuster CB4 Black is a universally compatible, tool-free throttle assist that reduces wrist fatigue by allowing effortless throttle control through palm pressure. Lightweight and DOT certified, it fits standard and oversized grips—including heated grips—making it an essential upgrade for long-distance motorcyclists seeking comfort and control.

## Description

The Crampbuster provides a way for comfortable throttle control, and dramatically reduces the wrist fatigue often caused by long rides. It doesn't lock the throttle on and installs with no tools, just slide it on, it rotates forward with ease yet when downward pressure is applied by your hand, the throttle is regulated effortlessly without squeezing. There are no moving parts or tools required. It works on the principle of an oil filter wrench. Simply stretch it open and snap it on the outside of your grip. It will rotate clockwise (upward for adjustment) but when turned counter clockwise (downward) by the weight of your palm it pinches and the throttle is pulled open. To accelerate, simply lift it a little (causing it to rotate up clockwise) then rest your palm back on it. To decelerate, simply spin it up clockwise completely around until it comes up into a position a little lower than before. It can also be used as a rest for you left hand. Oversized version fits grips 1-3/8 inches and larger in diameter and has shorter and wider palm rest.

Review: This is my second one and I love it. - I installed one of these YEARS ago on my 2012 R1200GS and it works extremely well. It stays on, it does the job, really helps when / if I get a cramp or if my hand gets tired. Then, last spring, I got a 2023 K1600GTL! I thought, "OK, this thing has cruise control. No need for a crampbuster.". Well, cruise control is great and all. But, for those moments where you just want a quick stretch or if you're in a situation where cruise control isn't a good idea and would make for a poor life decision, this crampbuster is the perfect solution. It's cheap and simple and makes a world of difference. On a side note, I have this installed on my K1600GTL with the grip puppies over the hand grips. Fits fine with no issues. My R1200GS? I have it installed with out the grip puppies. Also fits fine with out issues.
Review: Must-Have for Long Rides – Even Works with Heated Grips - This CB4 Black Throttle Mounted Motorcycle Cruise Assist has been a total game-changer for long trips. It does exactly what it's supposed to—relieves wrist strain and cramping so I can ride longer without discomfort. I used to get sore after a couple of hours, but with this installed, it takes a huge load off my throttle hand. One of the best parts is that it even fits over my heated grips without any issue, which I was a little concerned about at first. Installation was simple, and it stays secure while riding. If you do any kind of touring or long-distance riding, I highly recommend adding this to your setup. It's a small accessory that makes a big difference!

## Features

- Product Type:AUTO ACCESSORY.Fit Type: Universal Fit
- Item Package Dimension:6.75 inches L x4.5 inches W x1.5 inches H
- Item Package Weight:1.0 pounds
- Country of Origin: United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001L9KI56 |
| Best Sellers Rank | #9,859 in Automotive ( See Top 100 in Automotive ) #146 in Powersports Accessories |
| Brand | Crampbuster |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,259) |
| Date First Available | January 30, 2007 |
| Exterior | Painted |
| Global Trade Identification Number | 00852493001039 |
| Is Discontinued By Manufacturer | Yes |
| Item Weight | 0.635 ounces |
| Item model number | 70-1073 |
| Manufacturer | crampbuster |
| Manufacturer Part Number | 70-1073 |
| Material | Plastic, Rubber |
| Model | crampbuster 70-1073 |
| Number of Items | 1 |
| OEM Part Number | CB4 |
| Product Dimensions | 6.75"L x 4.5"W |
| Safety Rating | DOT Certified |
| UPC | 852493001039 182682832312 |
| Vehicle Service Type | Motorcycles |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Crampbuster
- **Color:** Black
- **Material:** Plastic, Rubber
- **Product Dimensions:** 6.75"L x 4.5"W
- **Vehicle Service Type:** Motorcycles

## Images

![Crampbuster CB4 Black Throttle Mounted Motorcycle Cruise Assist - Image 1](https://m.media-amazon.com/images/I/61nlwzKMqGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is my second one and I love it.
*by W***R on January 15, 2024*

I installed one of these YEARS ago on my 2012 R1200GS and it works extremely well. It stays on, it does the job, really helps when / if I get a cramp or if my hand gets tired. Then, last spring, I got a 2023 K1600GTL! I thought, "OK, this thing has cruise control. No need for a crampbuster.". Well, cruise control is great and all. But, for those moments where you just want a quick stretch or if you're in a situation where cruise control isn't a good idea and would make for a poor life decision, this crampbuster is the perfect solution. It's cheap and simple and makes a world of difference. On a side note, I have this installed on my K1600GTL with the grip puppies over the hand grips. Fits fine with no issues. My R1200GS? I have it installed with out the grip puppies. Also fits fine with out issues.

### ⭐⭐⭐⭐⭐ Must-Have for Long Rides – Even Works with Heated Grips
*by E***J on April 18, 2025*

This CB4 Black Throttle Mounted Motorcycle Cruise Assist has been a total game-changer for long trips. It does exactly what it's supposed to—relieves wrist strain and cramping so I can ride longer without discomfort. I used to get sore after a couple of hours, but with this installed, it takes a huge load off my throttle hand. One of the best parts is that it even fits over my heated grips without any issue, which I was a little concerned about at first. Installation was simple, and it stays secure while riding. If you do any kind of touring or long-distance riding, I highly recommend adding this to your setup. It's a small accessory that makes a big difference!

### ⭐⭐⭐⭐ Does the job
*by S***H on July 6, 2025*

Does the job well. The clip grips well with the included rubber band, and you can adjust mid-ride without taking your eyes off the road. It feels uncomfortable for the first few minutes of the ride, but it's a huge relief after fatigue sets in.

## Frequently Bought Together

- Crampbuster CB4 Black Throttle Mounted Motorcycle Cruise Assist
- The Original Grip Puppy Comfort Grips
- Go Cruise GC-A1BK GO CRUISE 2 Universal Throttle Control System – Black

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-17*