• Pro Circuit

Pro Circuit T-4 4-Stroke Silencer w/Mid-Pipe - 4QY86350

  • Part #: 446479
  • Manufacturer Part #: 4QY86350
  • MSRP Price: $374.95
  • Our Price: $337.46
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446479
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Overview of Pro Circuit T-4 4-Stroke Silencer w/Mid-Pipe - 4QY86350

  • Designed to boost output throughout the powerband
  • Fine-tune your power delivery by changing end caps(See T-4 Replacement End Caps under Exhaust Replacement Parts and Accessories)
  • Lighter than stock
  • Extruded 6063 aluminum silencer resists oxidation and features long-lasting packing material
  • Quick access to the U.S. Forest Service approved screen spark arrester through removable end cap tip
  • Can be used with OEM or Pro Circuit head pipe (sold separately)
  • This silencer comes with a 1.75 in. diameter end cap
  • Connector pipe included

Included Items:
(1) Silencer
(1) 8mm-1.25x60mm Flanged shoulder bolt
(1) 8mm Medium fender washer
(1) 8mmx38mm Spacer
(1) Instructions


Specs

Type Muffler/Silencer w/Spark Arrestor
Units Each
Weight 4.81 lbs

Specs for Pro Circuit T-4 4-Stroke Silencer w/Mid-Pipe - 4QY86350

Type Muffler/Silencer w/Spark Arrestor
Units Each
Weight 4.81 lbs

Fitment for Pro Circuit T-4 4-Stroke Silencer w/Mid-Pipe - 4QY86350

Part 446479 fits the following machines

See if this part fits your ride

Yamaha
2004 Yamaha YFM350X Warrior
2003 Yamaha YFM350X Warrior
2002 Yamaha YFM350X Warrior
2001 Yamaha YFM350X Warrior
2000 Yamaha YFM350X Warrior
1999 Yamaha YFM350X Warrior
1998 Yamaha YFM350X Warrior
1997 Yamaha YFM350X Warrior
1996 Yamaha YFM350X Warrior
1995 Yamaha YFM350X Warrior
1994 Yamaha YFM350X Warrior
1993 Yamaha YFM350X Warrior
1992 Yamaha YFM350X Warrior
1991 Yamaha YFM350X Warrior
1990 Yamaha YFM350X Warrior
1989 Yamaha YFM350X Warrior
1988 Yamaha YFM350X Warrior
1987 Yamaha YFM350X Warrior

Reviews for Pro Circuit T-4 4-Stroke Silencer w/Mid-Pipe - 4QY86350

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 w/Mid-Pipe - 4QY86350

Instructions - PDF Instructions - PDF Instructional PDF