RD500 493mm Replacement Fork Springs

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ChequeredFlagRacing
Posts: 336
Joined: Fri Mar 24, 2017 10:08 am
Location: United Kingdom

RD500 493mm Replacement Fork Springs

#1 Post by ChequeredFlagRacing » Sun Jul 25, 2021 3:27 am

Which Yamaha fork springs would you recommend for the RD to replace the OEM items?

Failing Yamaha which aftermarket ones to go for?
Yamaha FS1E 1975
Yamaha RD200 1976
Yamaha RD400 1977
Yamaha AS3 125cc 1978
Yamaha AS1 125cc 1979
Honda CX500
Honda MT125cc 1980
Yamaha TZ125G 1981-82
Zeger TC500cc 1983-84
Yamaha RD500LC 1985-87
Honda C90 1989
Yamaha DT175 1993
Yamaha RZV500R 2018

steveho
Posts: 230
Joined: Thu Aug 20, 2015 4:01 pm
Location: Southampton, England

Re: RD500 493mm Replacement Fork Springs

#2 Post by steveho » Sun Jul 25, 2021 5:41 am

Personally, I don’t like progressive fork springs and prefer linear. The fork compression action is progressive anyway due to the volume of air that is compressed.
I have bought from Sonic Springs in the US, who can make to any dimensions. Maybe give them a try and you can choose a spring rate to give proper static sag? :grin:

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