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Thread: 440ex top speed

  1. #1
    Join Date
    Jan 2005
    Location
    Pottstown, PA.
    Posts
    57

    Question 440ex top speed

    Just wondering how fast everybody elses big bore 400ex can go, And what gearing they are using.
    04 400ex
    440 big bore w/ 12.5:1 comp
    web cam
    mickey dunlap ported head
    DG exhaust
    DG Nerf bars
    10" ITP c-series on all 4 corners
    Maxxis Razr tires
    K&N air filter
    PRM rear grab bar
    AC Racing stadium front bumper

  2. #2
    Join Date
    Dec 2003
    Location
    Spartanburg, SC
    Posts
    323
    I hit 68.6 on the stock rev box with 14/38 gearing.
    99 416EX: Being parted out.

    03 Honda 250EX: Full skids, Pro Circuit T-4 exhaust, Tusk T7 bars, Ign. and lights relocated, 1.5" front spacers, 20x11 Razor's, K&N and Shockwears

    '03 Yamaha Blaster- For Sale $2k

  3. #3
    Join Date
    Jul 2004
    Location
    Central NY
    Posts
    9,290
    what size tires? I dont think mine will do that with stock gearing!

  4. #4
    Join Date
    Nov 2002
    Location
    St.Peter MN
    Posts
    1,641
    Well with a built 416ex I got up to 70.7mph in 1000 feet with 16/38 20 inch rears on ice with ice picks.-darren
    I ride a 440ex-
    JE, Hotcam, Hinson, Barnett, HMF, FMF, Douglas, Maier, Elka, FCR, Lonestar Racing Ceet, Renthal..... buncha other crap that makes it fast and such.

    THANKS TO-Fellow exriders' hook ups, Pappy's Performance Coatings

    MSN- Darrenkaiser@hotmail.com
    Daredevil416ex@yahoo.com...

  5. #5
    Join Date
    Jul 2004
    Location
    Central NY
    Posts
    9,290
    Originally posted by speedy400
    Well with a built 416ex I got up to 70.7mph in 1000 feet with 16/38 20 inch rears on ice with ice picks.-darren
    That sounds a little bit more reasonable with the higher gearing, but 68 mph with 14/38? Wow thats cool if you could do that.

  6. #6
    Join Date
    Jul 2004
    Location
    Tuscaloosa, Alabama
    Posts
    10
    I reached 70 with mine with a Big Gun CDI

  7. #7
    Join Date
    Jan 2005
    Location
    Pottstown, PA.
    Posts
    57
    Do you guys think that if I run a 16t front sprocket, A 36t rear sprocket, And 22" rear tires I could get close to 80mph?
    04 400ex
    440 big bore w/ 12.5:1 comp
    web cam
    mickey dunlap ported head
    DG exhaust
    DG Nerf bars
    10" ITP c-series on all 4 corners
    Maxxis Razr tires
    K&N air filter
    PRM rear grab bar
    AC Racing stadium front bumper

  8. #8
    Join Date
    Aug 2002
    Location
    San Diego, Ca
    Posts
    974
    it doesn't matter if you ave a 440, 500, 416, or stocker they all go the same speed, if you want a higher top speed you change your gearing and tires. Built 440's just get to the top speed faster than a stocker. You want a high top speed run 16/36 gears with 18inch tires on the track that'll get you up there or you can use 16/38 with 20" tires, don't put on too big of tire or you'll lose a lot of bottom end.
    2001 Duncan Racing National 440ex
    Power Cylinder 4000 12:1 JE
    web cam 463/9i, port & polish, 3 angle valve job, hardend rockers, titanium valve springs.
    Duncan Racing Fat Boy 4 Exhaust
    1mm oversized blackdiamond intake and exhaust valves
    15 point gusseted frame powder coated candy apple red
    Doug Eichner Signature Series Edelbrock Carb
    Procom CDI ignition
    Hinson Basket, Removable Side Case
    Sparks 8 plate clutch
    Custom graphics and seat cover
    Custom air intake with K&n Filter
    everything is polished and billet
    Roll Design chrome swing arm
    Elka dual rate ssd with LT linkage
    TCS ZPS, douglas ultimate billet beadlock wheels with Maxxis Razr's
    Roll +1.5" chrome anti vibe stem with Tag T-2 oversized bars cr hi bend
    Herrmann arms Trail Tech HID Lights w/ custom billet mount (for the dunes)
    Overized UM vented oil tank FST oil cooler kit and even more

  9. #9
    Join Date
    Dec 2003
    Location
    Spartanburg, SC
    Posts
    323
    Originally posted by 400exrider707
    what size tires? I dont think mine will do that with stock gearing!
    20's and that was with it popping off the rev box. Opened it up with the stock 15/38 setup yesterday and got to 72 before I had to back out. I have seen another 400 hit 72 also on GPS with 14/38 and a WB rev box.
    99 416EX: Being parted out.

    03 Honda 250EX: Full skids, Pro Circuit T-4 exhaust, Tusk T7 bars, Ign. and lights relocated, 1.5" front spacers, 20x11 Razor's, K&N and Shockwears

    '03 Yamaha Blaster- For Sale $2k

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