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Thread: Curtis Sparks 400EX exhaust on 350X?

  1. #1
    Join Date
    Jul 2010
    Location
    Gods Country, MS
    --
    209

    Curtis Sparks 400EX exhaust on 350X?

    For my current 350X build the stock exhaust just isnt acceptable. So before i have a cuztom head pipe built i was wonderin if you guys knew if a 400EX head pipe will work on a 350X. I was looking at using the Curtis Sparks pipe below. Now i know it wont just bolt right up but i was wondering with a litttle bending, cutting and some teaking if i could make it work? I have heard of people using 450R tailpipes but im wanting to use the 400EX because of the twin port main header. What do you guys think??
    Attached Thumbnails Attached Thumbnails 400ex.jpg  
    Coal Shed Racing
    Beasley's ATV Services
    DEAF MAN CHASSIS
    EKO Engineering
    2 of the fastest 300ft raptors in the country..
    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110

  2. #2
    Join Date
    Jun 2009
    Location
    Tunkhannock,Pa
    --
    904
    Ive always wanted to put a sparks pipe on a 350x. With a little modding it will work I heard of a couple guys on here putting 400EX head pipes on there 350x.
    1985 200X
    66mm H&S Piston
    Little Bit Bigger Cam
    Bassani Exhaust

    1985 350X With Bassani Exhaust

    1983 Honda 200E (PARTING OUT!!!!)

    1985 Yamaha Tri-Zinger


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  3. #3
    Join Date
    Jan 2007
    Location
    Frewsburg NY
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    1,169
    i have a stock 400ex head pipe and a 450r curtis sparks tailpipe and love it. you can use a 400ex or 450r ,450r has a bigger pipe that goes into the head pipe, use a 400ex

  4. #4
    Join Date
    Jul 2010
    Location
    Gods Country, MS
    --
    209
    Quote Originally Posted by johnny's X View Post
    i have a stock 400ex head pipe and a 450r curtis sparks tailpipe and love it. you can use a 400ex or 450r ,450r has a bigger pipe that goes into the head pipe, use a 400ex
    Thats awesome and your right i might need a 450r tailpipe cuz my 350x will be bigbored to a 403cc or 454cc.

    Can you post or send me a pic?!
    Coal Shed Racing
    Beasley's ATV Services
    DEAF MAN CHASSIS
    EKO Engineering
    2 of the fastest 300ft raptors in the country..
    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110

  5. #5
    Join Date
    Jul 2010
    Location
    Gods Country, MS
    --
    209
    Anybody else got any info on this or pics of a 400ex exhaust on a 350x?
    Coal Shed Racing
    Beasley's ATV Services
    DEAF MAN CHASSIS
    EKO Engineering
    2 of the fastest 300ft raptors in the country..
    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110

  6. #6
    Join Date
    Apr 2003
    Location
    Bay Area CA.
    --
    2,638
    I know for sure there is a member on here with a full 400ex system on his 350x. I remember asking him about it.
    1985 350x
    1985 atc70

    2006 ltz400
    2017 z125pro

  7. #7
    Join Date
    Jul 2010
    Location
    Gods Country, MS
    --
    209
    Do you remember if he had to do any special cutting or bending to the head pipe to make it work?
    Coal Shed Racing
    Beasley's ATV Services
    DEAF MAN CHASSIS
    EKO Engineering
    2 of the fastest 300ft raptors in the country..
    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110

  8. #8
    Join Date
    Apr 2003
    Location
    Bay Area CA.
    --
    2,638
    yea he did, it definitely was not a bolt on.
    1985 350x
    1985 atc70

    2006 ltz400
    2017 z125pro

  9. #9
    Join Date
    Jul 2010
    Location
    Gods Country, MS
    --
    209
    Cool i wish someone would post pics of the mods they had to do and what it looks like on the bike.
    Coal Shed Racing
    Beasley's ATV Services
    DEAF MAN CHASSIS
    EKO Engineering
    2 of the fastest 300ft raptors in the country..
    847cc 100hp+
    720cc 75hp+ (play bike)
    1986 200x, 1986 350x, 1984 110

  10. #10
    Join Date
    Apr 2006
    Location
    Crestview, Florida
    --
    2,429
    I think Syko did that to the one he had and even posted pics up.
    The person who says it cannot be done should not interrupt the person who is doing it.


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    85 ATC350X
    85 ATC200X


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