Four-stroke power valve system
id:
four-stroke-power-valve-system-265-15222519
title:
Four-stroke power valve system
text:
A four-stroke power valve is a device fitted to four-stroke engines that constantly adjusts the internal diameter of the exhaust system to better suit the speed of the engine. Yamaha was the first to develop such a system, called the Exhaust Ultimate Power Valve (EXUP). It first appeared on the Yamaha FZR EXUP and was later used on many other Yamahas. Later versions from Honda went by the names Honda Titanium Exhaust Valve (HTEV) and Honda Variable Intake/Exhaust (H-VIX), appearing on the CBR600
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Four-stroke_power_valve_system
date created:
date modified:
2022-12-23T00:15:25Z
main entity:
{"identifier":"Q8565052","url":"https://www.wikidata.org/entity/Q8565052"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/e/e9/2007_Honda_CBR600RR_exhaust_power_valve_4.jpg","width":3872,"height":2592}
fields total:
13
integrity:
14