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WTB - DT 400 Kick start boss

  • tgill
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WTB - DT 400 Kick start boss was created by tgill

Apparently, many models use the same boss under different part numbers.  
Thanks, in advance!  
20 Oct 2025 08:39 #1

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Replied by MarkT on topic WTB - DT 400 Kick start boss

There's several threads on this topic...  here's one:  yamaha-enduros.com/index.php/forums/74-7...-boss-needed?start=0

Current part number is 583-15621-00-00

Still available new.  www.partzilla.com/product/yamaha/583-15621-00-00
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
Last edit: 20 Oct 2025 11:59 by MarkT.
20 Oct 2025 10:56 #2

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Replied by tgill on topic WTB - DT 400 Kick start boss

Great information.  583 parts prices are much better!  I really believe that if the kick starter is hitting the RS foot peg mounting bolt, the boss will snap eventually.  Mine did just that!  Thanks, 
21 Oct 2025 17:46 #3

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Replied by MarkT on topic WTB - DT 400 Kick start boss

I've tried aftermarket (whole kick starter, boss and lever) and had it bend/break at the boss pretty quick.  

Yamaha part is the way to go.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
21 Oct 2025 18:42 #4

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Replied by tgill on topic WTB - DT 400 Kick start boss

I was tempted but bought Yamaha.  I haven't installed the new/old kicker yet but really think it might have been new paint on the frame and peg mount that caused the nut to stick out and hit the kick arm.  We shall see.   
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21 Oct 2025 19:46 #5

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Replied by Wessi on topic WTB - DT 400 Kick start boss

Aftermarket part from Yamaha XS 650 works fine since years on my ´76 DT400.
Endures also strong kick-backs .
Bought the whole Arm but only used the boss in combination with the origin arm.
Cant find the link to the shop, anymore, sorry.
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22 Oct 2025 06:37 #6

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Replied by Gr8uncleal on topic WTB - DT 400 Kick start boss

Is this it, Wessi?

Kickstarter kompl. 74-84 | 39-15620

Mikes XS in the US might stock one as well.
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22 Oct 2025 06:46 #7

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Replied by MarkT on topic WTB - DT 400 Kick start boss

There are aftemarket ones that are not great.  I bought one here in the US years ago and boss failed quickly.  I vaguely remember it may have been painted black?  Too long ago and can't find the part number I bought.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
22 Oct 2025 07:50 #8

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