Fat Cat Expansion Pipe

Discussion in 'Motorized Bicycle General Discussion' started by obd1kenobi, Apr 15, 2010.

  1. obd1kenobi

    obd1kenobi New Member

    Joined:
    Dec 28, 2009
    Messages:
    79
    Likes Received:
    0
    I was planning on ordering this pipe for my MB, but I have a few questions about it first. If anyone has or has had this exhaust, how does it perform next to the stock pipe? Also, will this pipe fit without getting a longer bottom bracket spindle (3pc)? I really am considering this pipeFat Cat Chrome Expansion Chamber - $49.99
     
  2. BarelyAWake

    BarelyAWake New Member

    Joined:
    Jul 21, 2009
    Messages:
    7,209
    Likes Received:
    4
    A buddy's kid got that 'un for his ride, it was a direct bolt-on w/o any modification needed. The flange's mount holes oversized a bit we could turn it slightly to clear the pedals on his mountain bike - while it was a cartage style crankset, the pedals were no wider apart than normal. I would recommend some sort of secondary support, I'd worry about the exhaust studs elsewise.

    As for power gain? According to the kid it's "awesome" but who knows what that means lol, I noticed it was a bit faster and ran a bit smoother when we took our bikes out for a spin...

    It's also freakin' LOUD lol, but he loves that too o_O

    :p
     
  3. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

    Joined:
    Mar 20, 2008
    Messages:
    6,169
    Likes Received:
    18
    26 inch has one on his bike & he's pretty fast! (& pretty loud... :rolleyes: )
     
  4. sportscarpat

    sportscarpat Bonneville Bomber the Salt Flat record breaker

    Joined:
    Jun 25, 2009
    Messages:
    1,722
    Likes Received:
    25
    I have ran a few of these with excellent results and the difference between this and the stock pipe is substantial. As for noise, well I control that with my right hand. It is easy to come off the throttle and quiet things down as I motor by people. I do improve them by cutting off the stock flange and using my own ported flange. I also tuck it up and back towards the bottom bracket when I do the flange swap.
     
  5. obd1kenobi

    obd1kenobi New Member

    Joined:
    Dec 28, 2009
    Messages:
    79
    Likes Received:
    0
    Cool, cool. I think I'm going to get this pipe. Thanks for the input. I wanna see how this pipe does against tommyboy's pk80 w/sbc pipe.
     

Share This Page