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  • Pro Circuit

Pro Circuit Ti-4GP Low Boy 4-Stroke Exhaust System - 4Y09450TIGP

  • Part #: 434440
  • Manufacturer Part #: 4Y09450TIGP
  • MSRP Price: $949.95
  • Our Price: $854.96
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434440
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Overview of Pro Circuit Ti-4GP Low Boy 4-Stroke Exhaust System - 4Y09450TIGP

  • Pro Circuits newest systems offer top-of-the-line performance and power
  • Complete systems from front to back
  • Ti-4 GP systems feature high-quality grade-two aerospace titanium throughout to provide huge weight savings and unique highlights
  • Packed with performance features tailored to the demands of serious racers and developed to lower and centralize the machines center of gravity, which improves handling and critical clearances
  • In addition to an instant hook-up under power, the systems also offer huge horsepower gains across the rpm range
  • Each model has been rigorously track- and dyno-tested to yield peak performance
  • Features tapered style end cap

    NOTE: This item ships 3-4 business days after order is processed

    Included Items:
    (1) Titanium muffler with mid-pipe and (2) Springs attached and removable baffles
    (1) Head pipe
    (1) Spark arrestor
    (1) 8mm-1.25 x 25mm flange head bolts
    (5) 6mm-.80 x 8mm button head bolts
    (2) Exhaust springs
    (1) Tube anti-seize
    (1) Fiberglass muffler repacking

    Specs

    Type Complete System w/o Spark Arrestor
    Units Each
    Weight 9.55 lbs

Specs for Pro Circuit Ti-4GP Low Boy 4-Stroke Exhaust System - 4Y09450TIGP

Type Complete System w/o Spark Arrestor
Units Each
Weight 9.55 lbs

Fitment for Pro Circuit Ti-4GP Low Boy 4-Stroke Exhaust System - 4Y09450TIGP

Part 434440 fits the following machines

See if this part fits your ride

Yamaha
2009 Yamaha YZ450F
2008 Yamaha YZ450F
2007 Yamaha YZ450F

Reviews for Pro Circuit Ti-4GP Low Boy 4-Stroke Exhaust System - 4Y09450TIGP

out of 6 reviews.

6 out of 6 (100%) customers would recommend this to a friend.

5 Stars
6
4 Stars
0
3 Stars
0
2 Stars
0
1 Stars
0
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
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A little loud, but nice sound

March 15, 2013

I have had this exhaust for many years after running both the stock exhaust and an XR's Only exhaust which was super loud. This one has better mid range to top end than both the other two exhausts mentioned. It pulls to the moon, just like my 2 stroke pro circuit exhaust. Finish is nice.

I would recommend this item to a friend.
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
By: from Southern California, USA

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Sweet

September 16, 2010

Fast shipping best price got it for like half price;) Very happy

I would recommend this item to a friend.
By: from Dayton, ohio

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awsome exoust

August 24, 2010

man this thing is SWEET words dont even describe it hear it for your self

I would recommend this item to a friend.
Fitment:
Finish:
Performance:
By: from michigan

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Strong running Pipe

August 16, 2010

Pro Circuit makes a very high quality pipe. Fitment was excellent on my 2008 CRF250R except for the fact that the can presses out on the number plate (which is the only reason I gave it 4 stars for fitment). I also didn't like how far the muffler stuck out past the # plate (I liked that the duals didn't stick out at all) but that's just cosmetic. Now the performance... Seems like it added power everywhere in the rpm range and really punched up the throttle response! Can't wait to see what it's like with a Hi-comp piston!

I would recommend this item to a friend.
Fitment:
Finish:
Performance:
By: from Ham Lake, MN

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Great pipe

March 15, 2010

Easy install, fits like a glove, great sound and nice extra power, alway a great product from Pro Circuit!!!

I would recommend this item to a friend.
Fitment:
Sound: A Little Loud
soft loud
Finish:
Performance:
By: from Holliater, CA

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Light, powerful, trick

February 8, 2010

I have ran this system on my race bike for the past 2 years. As a fast Vet intermediate level rider I need power everywhere and this system delivers. Where the stock system falls off in the upper rpm's these bad boys keep producing power. Not only is there no sight of sign off with this pipe and header, it is light! I mean really light!

I would recommend this item to a friend.
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
By: from San Diego, Ca

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Instructions and Media for Pro Circuit Ti-4GP Low Boy 4-Stroke Exhaust System - 4Y09450TIGP

Instructions - PDF Instructions - PDF Instructional PDF