Pro Circuit T-4 4-Stroke Silencer - 4QY06450

  • Part #: 433087
  • Manufacturer Part #: 4QY06450
  • MSRP Price: $424.95
  • Our Price: $382.46
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Overview of Pro Circuit T-4 4-Stroke Silencer - 4QY06450

  • Designed to reduce exhaust noise level to legal dB while producing a noticeable gain in horsepower over OEM systems
  • State-of-the-art system uses a longer aluminum body and special internal E-glass packing for maximum sound disbursement for less noise and more power
  • Lightweight brushed aluminum muffler body
  • FIM-approved stainless steel modular end cap and intake tube
  • Hand-assembled and -welded for a fit and finish that would rival any Factory Works part
  • Includes lightweight aluminum mounting brackets
  • Wire mesh removable U.S. Forest Service-approved spark arrestor


Specs

Type Muffler/Silencer w/Spark Arrestor
Units Each
Weight 7.3 lbs

Specs for Pro Circuit T-4 4-Stroke Silencer - 4QY06450

Type Muffler/Silencer w/Spark Arrestor
Units Each
Weight 7.3 lbs

Fitment for Pro Circuit T-4 4-Stroke Silencer - 4QY06450

Part 433087 fits the following machines

See if this part fits your ride

Yamaha
2012 Yamaha YFZ450
2009 Yamaha YFZ450
2008 Yamaha YFZ450
2007 Yamaha YFZ450
2006 Yamaha YFZ450
2005 Yamaha YFZ450
2004 Yamaha YFZ450
2007 Yamaha YFZ450BB Bill Ballance Edition
2006 Yamaha YFZ450BB Bill Ballance Edition
2005 Yamaha YFZ450LE Limited Edition
2004 Yamaha YFZ450LE Limited Edition
2008 Yamaha YFZ450SE Special Edition
2007 Yamaha YFZ450SE Special Edition
2005 Yamaha YFZ450SE Special Edition
2008 Yamaha YFZ450SE2 Special Edition 2
2007 Yamaha YFZ450SE2 Special Edition 2
2006 Yamaha YFZ450SP 50th Anniversary Edition
2008 Yamaha YFZ450SP Special Edition
2008 Yamaha YFZ450SP2 Special Edition 2

Reviews for Pro Circuit T-4 4-Stroke Silencer - 4QY06450

out of 7 reviews.

6 out of 7 (86%) customers would recommend this to a friend.

5 Stars
4
4 Stars
2
3 Stars
0
2 Stars
0
1 Stars
1
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
Write a Review

More power better sound!

May 27, 2013

Bought for my '95 KLX650R and am very happy. I replaced a cheap aftermaket silencer that rattled. Huge upgrade! Fit perfect sounds awesome, and better power.

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

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nice pipe

October 7, 2011

this was well made but the T-4 4-Stroke Silencer Part #448937 didn't fit my stock 2001 drz400s head pipe, It looked well made but i sent it back , Not sure if a different part number would have fit. I ended up just getting a full system from another maker.

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

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May 7, 2011

I wouldn't recommend this item to a friend.
Fitment:
Sound: Very Soft
soft loud
Finish:
Performance:
By:

May 6, 2011

I would recommend this item to a friend.
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
By:

good pipe

January 11, 2011

Put on 03 wolverine sounds nice and throaty and not too loud . nice machine welds on canister - welds on mid pipe not so nice . fit well but had to cut a slot on end of pipe so hose clamp could compress the seam

I would recommend this item to a friend.
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
By: from erie pa

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Nice Pipe

August 17, 2010

Good sound, good power. Quiets down considerably when at cruising speed. I needed to re-jet but that helped with power as well.

I would recommend this item to a friend.
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
Product Recommendations
By: from Charleston, SC

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GOOD EXHAUST

September 26, 2009

It´s very good exhaust, good quality, good performance. Too much better than leovince or FMF.

I would recommend this item to a friend.
Fitment:
Sound: Loud
soft loud
Finish:
Performance:
By: from SPAIN

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Instructions and Media for Pro Circuit T-4 4-Stroke Silencer - 4QY06450

Instructions - PDF Instructions - PDF Instructional PDF