I'm buying a Pitster Mini Monster 125! - Page 2

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I'm buying a Pitster Mini Monster 125!

This is a discussion on I'm buying a Pitster Mini Monster 125! within the 1988 ZB50 and ZB Import Replica Bikes forums, part of the General Talk category; The header is a pretty large ID, plus the one I got is tapered, so it gets even bigger I dunno if the muffler you ...

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Thread: I'm buying a Pitster Mini Monster 125!

  1. #16
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    The header is a pretty large ID, plus the one I got is tapered, so it gets even bigger

    I dunno if the muffler you got will be like this, but it necks down to about 7/8" or so.

    Click image for larger version. 

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    It looks like your pipe will have good back pressure for low/ mid rpm torque and its large enough to breath at top speed. Hopefully my exhaust is the same It might be a little too restrictive when I swap in the Lifan 150 though.

    I checked out the gearing just now, 15t countershaft and 32t rear sprocket.

    can the 140 maintain 8000 rpms for a couple hours? I'm sure its not good for the skyteam 125, but sunday I had it pegged for over over an hour at 7500 rpm and it was vibrating real bad. I'm thinking my lifan 150 would puke the con rod or pin after 30 minutes at 7500rpm
    Last edited by rustynuts; 09-22-2014 at 10:22 PM.

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    Quote Originally Posted by rustynuts View Post
    It might be a little too restrictive when I swap in the Lifan 150 though.
    Yeah Ive got a pitster 140 going in. its far too restrictive for that.

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    Quote Originally Posted by rustynuts View Post
    can the 140 maintain 8000 rpms for a couple hours? I'm sure its not good for the skyteam 125, but sunday I had it pegged for over over an hour at 7500 rpm and it was vibrating real bad. I'm thinking my lifan 150 would puke the con rod or pin after 30 minutes at 7500rpm
    No idea and I dont intend on finding out. the most Ill ever need to hold it WFO will be a quarter mile or so.

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    I'm looking to buy inexpensive rearsets. Does anybody have any reccomendations? I searched and all the ones I found were several hundred bucks.

    Also, I've seen a couple kickstarter on different builds that had a lot of offset. I've looked around to try to find those kickers and can't find anything for the small 13mm or 14mm kicker shafts

    I found cheap rearsets on Ebay, but they're for disc brakes Monkey Bike Z50 Jingcheng M50 Billet Rearsets Footrest Backstep Rear Disc Brake | eBay



    Last edited by rustynuts; 09-23-2014 at 01:15 PM.

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    Quote Originally Posted by rustynuts View Post
    I'm looking to buy inexpensive rearsets. Does anybody have any reccomendations? I searched and all the ones I found were several hundred bucks
    your best bet is to get a slightly damaged set off ebay or the like. I got a pair of satos from a buddy of mine cheap. I had to straighten out a bracket, but they are going to work just fine.
    you can use almost any stock or aftermarket rearsets, as long as you dont mind drilling some mounting holes where you need them.
    Last edited by TexFiddy; 05-13-2014 at 05:56 AM.

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    also be aware that a pipe and rearsets will most likely render the kickstarter unusable:
    Attachment 141540

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    I thought they were about the same rusty from what I researched back in the days.
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    Quote Originally Posted by rustynuts View Post
    I've seen a couple kickstarter on different builds that had a lot of offset. I've looked around to try to find those kickers and can't find anything for the small 13 or
    I had a GPX 125 in my ZB and used a YSR50 kicker. Worked great Check link. I later on bought a Takegawa kicker.
    tmas

    Yamaha YSR50 Kick Starter Lever | eBay

    tmas.... ZB update

    GPX in ZB
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    I just picked up these rearsets in the past couple months. If you like the look I can dig through where I got 'em - may be the same set you have in the pic you posted. Let me know if I can help. Thanx

    b
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  12. #26
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    Quote Originally Posted by bwarren View Post
    I just picked up these rearsets in the past couple months. If you like the look I can dig through where I got 'em - may be the same set you have in the pic you posted. Let me know if I can help. Thanx

    b

    I would be interested in buying the rearsets if they're still available

    are they for drum or disc brakes?

    Can you post a link to the site that has the rearsets for drum brakes? Thanks!
    Quote Originally Posted by TexFiddy View Post
    also be aware that a pipe and rearsets will most likely render the kickstarter unusable:
    Attachment 141540
    I ordered this kick starter from vince @ tbolt https://tboltusa.com/store/advanced_...S-2606&x=0&y=0

    I got my new exhaust!





    Last edited by rustynuts; 09-23-2014 at 01:18 PM.

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    Disc brakes but I'm pretty sure they have a set for drum brakes as well

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    Hey mr nuts.... Haha...
    That exhaust looks pretty good.
    Its all chrome plated?
    What is the inner diameter on the header & can?
    Would it fit a z50 bike?
    Hidden Content Toooooo many mini bikes
    84z50, 91z50r, 95z50r, 91 & 99z50r apart, xr50, 2-xr70s, 03xr100, 08 hayabusa
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    2-71 ct70s

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    Quote Originally Posted by rustynuts View Post
    I got my exhaust and shock today!
    Damn, I might have to get one of those pipes, Im liking the ID of that muffler much better.

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    Yeah it does look wide enough for no restriction.
    Hidden Content Toooooo many mini bikes
    84z50, 91z50r, 95z50r, 91 & 99z50r apart, xr50, 2-xr70s, 03xr100, 08 hayabusa
    1999 & 2000 Jincheng Pandas stock n street legal....
    2 - 2013 skyteam flashback Red & black
    2-71 ct70s

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