Dennis Kirk Inc.
Legendary Service... Ask Your Friends - Since 1969
Need Assistance?
Over 150K Powersport Items - In-Stock and ready to ship today! View tires, apparel, helmets, exhaust and more!

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

T-4 4-Stroke Silencer - 4Y00225

4 out of 7 reviews
Fitment:
Sound:
soft loud
Loud
Finish:
Performance:


Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

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.

Review By:

from Billings, MT

Was this review helpful to you?


Fitment:
Finish:
Performance:

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.

Review By:

from NY

Was this review helpful to you?


Fitment:
Sound:
soft loud
Very Soft
Finish:
Performance:

Review By:

Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

Review By:

Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

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

Review By:

from erie pa

Was this review helpful to you?


Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

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.

Review By:

from Charleston, SC

Was this review helpful to you?


Fitment:
Sound:
soft loud
Loud
Finish:
Performance:

GOOD EXHAUST

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

Review By:

from SPAIN

Was this review helpful to you?


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