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Yamaha RD400 C,D,E USA model fork spring length

Started by stresa, January 16, 2026, 07:44:14 AM

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stresa

January 16, 2026, 07:44:14 AM
Hi guys,
how long is the RD400 1A1 fork spring please?
We have a discussion over here as the owner of a USA 1A1 thinks that the fork inners are different to the European 1A3 model.
Regards Uwe
81 Jackson 250,2x 74 RD250 racer,78 RD400 2R9,77 RD400 1A1,72 R5/RD350 rat,74 RD250 streettracker,75 Yapol TZ250,3x 76 TZ2/350,89 Honda RS125,
80 Hejira PE250,77 Höpfner-TD3,76 RD/TD3,75 TZ/RD250A,78 Siroko TZ250,86 Tomic 200,91 TDR250,86 TZR250,2x 94 FZ750,86 FZ750/1000,99 TDM850

1976RD400C

#1
January 16, 2026, 09:55:10 AM
15 3/8"
'76 RD400 green  '76 RD400 red   '84 RZ350

stresa

#2
January 16, 2026, 08:00:35 PM
@1976RD400C
Many thanks! If you have the length of the spacer also would be great.
Regards Uwe
81 Jackson 250,2x 74 RD250 racer,78 RD400 2R9,77 RD400 1A1,72 R5/RD350 rat,74 RD250 streettracker,75 Yapol TZ250,3x 76 TZ2/350,89 Honda RS125,
80 Hejira PE250,77 Höpfner-TD3,76 RD/TD3,75 TZ/RD250A,78 Siroko TZ250,86 Tomic 200,91 TDR250,86 TZR250,2x 94 FZ750,86 FZ750/1000,99 TDM850

1976RD400C

#3
January 17, 2026, 08:44:52 AM
oem spacer is 2 3/16"
'76 RD400 green  '76 RD400 red   '84 RZ350

stresa

#4
January 17, 2026, 05:36:27 PM
Many thanks!!! :olaf:
81 Jackson 250,2x 74 RD250 racer,78 RD400 2R9,77 RD400 1A1,72 R5/RD350 rat,74 RD250 streettracker,75 Yapol TZ250,3x 76 TZ2/350,89 Honda RS125,
80 Hejira PE250,77 Höpfner-TD3,76 RD/TD3,75 TZ/RD250A,78 Siroko TZ250,86 Tomic 200,91 TDR250,86 TZR250,2x 94 FZ750,86 FZ750/1000,99 TDM850
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