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

  • Part #: 433087
  • Manufacturer Part #: 4QY06450

MSRP Price: $424.95

Our Price: $382.46

You Save:
$42.49 (10%)
1 on Hand

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

Color - Primary Silver
Style - Exhaust Tip Canister Muffler
Type - Exhaust Muffler/Silencer w/Spark Arrestor
Units Each
Weight 7.30 lbs

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

Color - Primary Silver
Style - Exhaust Tip Canister Muffler
Type - Exhaust Muffler/Silencer w/Spark Arrestor
Units Each
Weight 7.30 lbs

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

See if this part fits your ride

Part 433087 fits the following machines

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
  • 2004 Yamaha YFZ450LE Limited Edition
  • 2007 Yamaha YFZ450SE Special Edition
  • 2005 Yamaha YFZ450SE Special Edition
  • 2007 Yamaha YFZ450SE2 Special Edition 2
  • 2006 Yamaha YFZ450SP 50th Anniversary Edition
  • 2008 Yamaha YFZ450SP Special Edition
  • 2008 Yamaha YFZ450SP2 Special Edition 2
4.1 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
4
2
0
0
1
Finish
4.7 / 5
Performance
4.0 / 5
Loudness
Very Quiet
Average
Very Loud
Finish
5 / 5
Performance
5 / 5
GOOD EXHAUST
It´s very good exhaust, good quality, good performance.
Too much better than leovince or FMF.
September 26, 2009
Finish
5 / 5
Performance
3 / 5
nice pipe
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.
October 7, 2011
Finish
5 / 5
Performance
5 / 5
More power better sound!
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.
May 27, 2013
Finish
5 / 5
Performance
5 / 5
Nice Pipe
Good sound, good power. Quiets down considerably when at cruising speed. I needed to re-jet but that helped with power as well.
August 17, 2010
Finish
4 / 5
Performance
5 / 5
good pipe
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
January 11, 2011
Finish
5 / 5
Performance
4 / 5
No Review Title Entered By User
No Review Text Entered By User
May 6, 2011
Finish
4 / 5
Loudness
Very Quiet
Average
Very Loud
Performance
1 / 5
No Review Title Entered By User
No Review Text Entered By User
May 7, 2011
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Instructions and Manuals for Pro Circuit T-4 4-Stroke Silencer - 4QY06450