Close


Page 1 of 2 12 LastLast
Results 1 to 10 of 16
  1. #1
    Join Date
    Jan 2006
    Posts
    20
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Best Pipe Setup - 06' YZ125

    Just wondering what you guys are running out there and what pipe(s) I should get for my new 125. I was thinking either a Pro Circuit/R304 silencer or an FMF Factory Fatty/Shorty silencer. The bike is all stock and if the bike is missing one thing, that's throttle response, because the bike revvs to the moon! Would like to get better throttle response/ lowend power while keeping the same revv out if possible in the pipe. Bike has stock jetting with slight bog if I crack the throttle too hard, so I want to get rid of that bog. Main mod's I'm looking into are VForce reed cage setup and pipe/silencer combo for now. Tell me what you think!!







  2. #2
    Join Date
    Apr 2003
    Posts
    157
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    24
    Biggest difference would be to get the cylinder ported. That was my money best spent. It was cheaper than a pipe/scilencer and reeds. My friend with the same exact bike as me (an 05' YZ125 which is pretty much esactly the same as an 06') tryed PC pipe and scilencer and v-force reeds and also tryed and FMF system as well with the v-force reeds and barely made a difference over stock. My bike is ported with everything else stock and it blew his away and I spent half the money. give www.tech-care.com a call they did my porting and it works awesome; completely reliable and great throttle response.




  3. #3
    Join Date
    Jan 2006
    Posts
    20
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Yeah, I was planning on getting the engine ported soon and/or a EG 144cc bigbore, but right now I need to get some more power downlow. By the way, did your bike or his have a bog at all in the lowend when it was all stock?? I'm starting to think the bike might be jetted a bit fat stock, but I doubt it. When it's warm, the bog isnt so bad, but it definitely is still there unless I really ease the throttle out a bit every so often when Im in turns or what not.

    BTW What pipe did your friend like better, the PC or FMF overall, and how did the two perform across the powerband?? Thanks for the help and info.




  4. #4
    Join Date
    Nov 2000
    Posts
    749
    Thanks
    0
    Thanked 2 Times in 2 Posts
    Rep Power
    35
    Track and dyno testing have shown me that the FMF factory Fatty is the best pipe for stock cyl , ported stock bore cyl or 144 kit . This is between the PC , FMF fatty and FMF factory fatty.
    Just my 2 cents worth.




  5. #5
    Join Date
    Jan 2006
    Posts
    20
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Ok, thanks alot Pete, than I guess FMF it is. You say this is between the PC and Fatty. Is there another pipe out there im missing out on?? Bill's, Doma, Dep, etc., or is the FMF Fatty just the best pipe for the YZ125 period? Thanks again...




  6. #6
    Join Date
    Feb 2006
    Posts
    70
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    17
    woah whats up buddy, this is big-ped00. i have a pc on my kx ripps dam well. ever been to the rockyhill track? www.ctmotocross.com .if ur ever heading out to this track tell me and well tear it up.




  7. #7
    Join Date
    Apr 2005
    Posts
    288
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    21
    Quote Originally Posted by OverheatedR
    Y I'm starting to think the bike might be jetted a bit fat stock, but I doubt it. When it's warm, the bog isnt so bad, but it definitely is still there unless I really ease the throttle out a bit every so often when Im in turns or what not.
    I'm not the best with jetting, but it sounds like your bike is running a little lean on the pilot jet, perhaps the needle as well.

    When the temps drop, the jetting leans and when it warms it should richen due to the air density. Cold air is more dense. Which would explain the bike running better when it's warmer outside.

    Try putting going up a size on your pilot, it could make a huge difference.

    I have been running a 42 pilot for temps around 60ish, and went down to a 40 this past weekend in anticipation of warmer weather. It was a mistake, as all I did was bog all over the place down low.

    I may be incorrect with the jetting, so someone please correct me if I goofed it up.




  8. #8
    Join Date
    Nov 2000
    Posts
    1,848
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    46
    I ended up jetting mine alittle leaner over stock actually one leaner on the pilot to a 37.5 and the clip pos to #2 mine was running alittle rich stock. Def get the Vforce for it that helped get ride of that bog it sometimes get. The stock reed block looks alittle more restrictive than it should be more like yamaha was alittle conservative when it came to the stuffer piece.

    I just put the factory fatty on mine with the shorty ran the stocker for a good while since aug and the FMF is not a oem copy different bends and cone shapes. It really helped out my 144 the stocker felt like it was choking it off up top only minus is the bigger cones blocks oil filler hole access some. Glad I got it and if you think it's fun stock should try my EG 144 you won't ride it stock again.




  9. #9
    Join Date
    Jan 2006
    Posts
    20
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Quote Originally Posted by MXP1MP
    I ended up jetting mine alittle leaner over stock actually one leaner on the pilot to a 37.5 and the clip pos to #2 mine was running alittle rich stock. Def get the Vforce for it that helped get ride of that bog it sometimes get. The stock reed block looks alittle more restrictive than it should be more like yamaha was alittle conservative when it came to the stuffer piece.

    I just put the factory fatty on mine with the shorty ran the stocker for a good while since aug and the FMF is not a oem copy different bends and cone shapes. It really helped out my 144 the stocker felt like it was choking it off up top only minus is the bigger cones blocks oil filler hole access some. Glad I got it and if you think it's fun stock should try my EG 144 you won't ride it stock again.

    Thanks alot man and i'll try it when leaned out a bit, because my plug just can't become the right color on the stock jetting with 32:1 ratio. I plan on getting the factory fatty/shorty and a vforce. I heard alot of good things about the EG 144cc, but am afriad it will kill the revvs. I'm sure you know how the stock YZinger 125 revvs like no other, and I hate to get rid of that and have to reside to constant short shifting. But any advantages over those damn 250f's I'll take!! :D




  10. #10
    Join Date
    Jan 2006
    Posts
    20
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0
    Quote Originally Posted by ruffrydaz127
    woah whats up buddy, this is big-ped00. i have a pc on my kx ripps dam well. ever been to the rockyhill track? www.ctmotocross.com .if ur ever heading out to this track tell me and well tear it up.
    Hey bro, yeah I've been to Rocky Hill once only to watch. Can't wait to get my bike up there and tear it up soon. How do you like it, from what it looks is a great track! You hit up that 80ft. double?? haha I'll deff talk to you on aim if I go out there. I'm currrently waiting for my acceptance at Milford MX club as well, you should try to join too.




Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Topics

  1. '01 yz125 PC pipe to '03?
    By mxer842 in forum 2-Stroke Discussion
    Replies: 0
    Last Post: 08-19-2005, 03:48 PM
  2. Wanted: YZ125 Pipe & Silencer
    By MXFastGuy in forum Dirt Bikes & Gear For Sale / Wanted
    Replies: 1
    Last Post: 10-28-2003, 12:44 PM
  3. yz125 pipe for more bottom? other mods?
    By stormer94 in forum 2-Stroke Discussion
    Replies: 5
    Last Post: 09-10-2002, 01:16 PM
  4. F/S-drz pipe and double wall bar setup.
    By PATHUMPERGUY in forum Dirt Bikes & Gear For Sale / Wanted
    Replies: 0
    Last Post: 01-22-2002, 09:01 PM
  5. FMF SST Pipe for 2000 YZ125
    By blakemx124 in forum Dirt Bikes & Gear For Sale / Wanted
    Replies: 1
    Last Post: 07-31-2001, 07:56 AM

Members who have read this thread: 0

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •