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4-Stroke Exhaust Systems

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169 Results

Yoshimura
RS-3 Comp Series Full System Exhaust

$509.00 - 519.00
5 out of 5 stars (20) reviews
Video Available

Yoshimura
RS-4 Titanium Full System Exhaust

$854.05 - 1072.55
Clearance
Up to 5%
5 out of 5 stars (9) reviews

FMF
Factory 4.1 Dual RCT Complete Exhaust W/ Stainless Megabomb

$877.99 - 1169.99
Sale
Up to 10%
5 out of 5 stars (7) reviews

Yoshimura
RS-4 Slip-On Exhaust

$359.00 - 589.00
Clearance
Up to 5%
5 out of 5 stars (6) reviews
Video Available

Two Brothers
S1R Slip-On Exhaust

$424.98 - 650.23
Sale
Up to 15%
5 out of 5 stars (5) reviews

Pro Circuit
T-4 GP Complete Exhaust

$709.99 - 737.99
Sale
Up to 10%
5 out of 5 stars (5) reviews

Yoshimura
TRS Comp Series Complete Exhaust With Stainless Header

$349.00
5 out of 5 stars (5) reviews
Video Available

FMF
Megabomb Header With Mid Pipe - Titanium

$472.99 - 539.99
Clearance
Up to 10%
5 out of 5 stars (5) reviews

Pro Circuit
T-4R GP Complete Exhaust

$737.99
Sale
Save 10%
5 out of 5 stars (5) reviews

FMF
Powerbomb Header With Mid Pipe

$314.99
Sale
Save 10%
5 out of 5 stars (4) reviews

Dr. D
Head Pipe

$177.77 - 252.99
Clearance
Up to 30%
5 out of 5 stars (4) reviews

Dr. D
Replacement Spark Arrestor

$16.95
5 out of 5 stars (4) reviews

Pro Circuit
Ti-6 Complete Exhaust

$899.99 - 1007.99
Sale
Up to 10%
5 out of 5 stars (4) reviews

Two Brothers
S1R Black Series Slip-On Exhaust

$390.98 - 611.98
Sale
Up to 15%
5 out of 5 stars (3) reviews
Video Available

Yoshimura
RS-9D Slip-On Exhaust - Dual

$689.00 - 809.00
5 out of 5 stars (3) reviews
Video Available

Pro Circuit
T-4 Slip-On Exhaust - Dual Without Midpipe

$496.99
Sale
Save 10%
5 out of 5 stars (3) reviews

FMF
Factory 4.1 RCT Complete Exhaust With Stainless Megabomb

$629.99 - 787.99
Sale
Up to 10%
5 out of 5 stars (3) reviews

FMF
Factory 4.1 RCT Spark Arrestor Insert

$26.99
Sale
Save 10%
5 out of 5 stars (3) reviews

Pro Circuit
Ti-6 Complete Exhaust - Dual

$1189.99 - 1369.99
Sale
Up to 10%
5 out of 5 stars (3) reviews

FMF
Factory 4.1 RCT Spark Arrestor Insert - Yamaha

$35.99
Sale
Save 10%
5 out of 5 stars (3) reviews

Pro Circuit
Stainless Steel New End Cap

$31.99
Sale
Save 9%
5 out of 5 stars (2) reviews

FMF
Factory 4.1 Titanium Slip-On RCT - Natural

$562.49
Sale
Save 10%
5 out of 5 stars (2) reviews

Pro Circuit
Stainless Steel Modular End Cap

$26.99
Sale
Save 10%
5 out of 5 stars (2) reviews

Pro Circuit
TI-4 Slip-On Exhaust

$449.99 - 520.99
Sale
Up to 10%
5 out of 5 stars (2) reviews

FMF
Powercore 4 HEX Slip-On Exhaust With Side Panel

$305.99 - 341.99
Clearance
Up to 10%
5 out of 5 stars (2) reviews

Yoshimura
Quiet Insert - RS-2

$27.50 - 28.95
Clearance
Up to 5%
5 out of 5 stars (2) reviews

FMF
Factory 4.1 Titanium Slip-On RCT - Carbon Fiber

$494.99 - 607.49
Sale
Up to 10%
5 out of 5 stars (2) reviews

Pro Circuit
Ti-5 Complete Exhaust - Dual

$1254.99
Sale
Save 10%
5 out of 5 stars (2) reviews
Video Available

Pro Circuit
Ti-5 Complete Exhaust

$944.99
Sale
Save 10%
5 out of 5 stars (2) reviews
Video Available

Leo Vince
X3 Enduro Slip-On Exhaust

$451.95 - 524.95
5 out of 5 stars (2) reviews

Akrapovic
Racing Full System Exhaust With Spark Arrestor

$604.15 - 1188.95
Sale
Up to 5%
5 out of 5 stars (2) reviews

Pro Circuit
T-5 Complete Exhaust

$573.77 - 737.99
Clearance
Up to 30%
5 out of 5 stars (2) reviews

Pro Circuit
Ti-4 Head Pipe

$244.99 - 256.99
Sale
Up to 11%
5 out of 5 stars (1) review

Bill's Pipes
SA-4 Series Head Pipe

$230.00
5 out of 5 stars (1) review

Yoshimura
Low Volume Insert For RS-4 Exhaust

$28.95
5 out of 5 stars (1) review
Video Available

GYTR
FMF Megabomb Head Pipe

$349.99 - 379.99
5 out of 5 stars (1) review

KTM PowerParts
Akrapovic Factory Silencer

$599.99 - 649.99
Sale
Up to 10%
5 out of 5 stars (1) review

GYTR
FMF Factory 4.1 Titanium Slip-on Exhaust

$449.99
5 out of 5 stars (1) review

FMF
Q4 Spark Arrestor Slip-On Exhaust - Single Pipe

$341.99
Sale
Save 10%
5 out of 5 stars (1) review

KTM PowerParts
FMF Factory 4.1 RCT Muffler

$649.99
5 out of 5 stars (1) review

Yoshimura
RS-4 Pro Series Titanium Full System Exhaust

$896.36 - 1101.05
Clearance
Up to 10%
5 out of 5 stars (1) review
Video Available

KTM PowerParts
FMF Powercore 4 Silencer

$449.99
5 out of 5 stars (1) review

FMF
Q4 Hex Spark Arrestor Slip-On Exhaust With Side Panel

$350.99 - 359.99
Sale
Up to 10%
5 out of 5 stars (1) review

Pro Circuit
T-6 Complete Exhaust - Dual

$845.99 - 893.99
Sale
Up to 10%
5 out of 5 stars (1) review

FMF
Q4 Hex Exhaust With Megabomb Header and Side Panel

$607.99
Sale
Save 10%
5 out of 5 stars (1) review

Pro Circuit
Ti-5 Carbon End Cap

$89.99
Sale
Save 10%
5 out of 5 stars (1) review

Graves
Works Stainless Full System Exhaust

$902.45
Sale
Save 5%
5 out of 5 stars (1) review

Pro Circuit
TI-4 GP Complete Exhaust

$402.99 - 898.99
Sale
Up to 10%
5 out of 5 stars (1) review

Dr. D
Quiet Core Insert

$54.95
5 out of 5 stars (1) review

Fastway
Ultra Silent Insert

$46.99
5 out of 5 stars (1) review

Fastway
Replacement Spark Arrestor Screen

$14.95 - 14.99
5 out of 5 stars (1) review

GYTR
Stainless Steel Exhaust System - 99 dBA

$709.95
5 out of 5 stars (1) review

Akrapovic
Slip-On Line Exhaust

$649.95 - 827.95
5 out of 5 stars (1) review

KTM PowerParts
FMF Megabomb Plus Header

$299.99 - 399.99
5 out of 5 stars (1) review

Yoshimura
RS-9T Complete Exhaust With Stainless Header - Dual

$854.05 - 909.00
Sale
Up to 5%
5 out of 5 stars (12) reviews

FMF
Powercore 4 Complete Exhaust Stainless Hi-Flo Header

$233.99
Sale
Save 10%
5 out of 5 stars (12) reviews

FMF
Factory 4.1 RCT Slip-On Exhaust

$337.49 - 607.49
Sale
Up to 10%
5 out of 5 stars (88) reviews

Most Recent Dirt Bike 4-Stroke Exhausts Reviews

FMF HEX Q4 Quiet Core Spark Arrestor Insert

FMF HEX Q4 Quiet Core Spark Arrestor Insert

Derek - Michigan
2 out of 5 stars
Got stuck in my PC4 Hex "I waited for almost 4 months to get this quiet insert. It finally came back in stock. When I went to instal it, The insert would slip half way in and get stuck. A tap with my palm was enough to wedge it in there so I couldn’t fully instal it or remove it... I ended up riding with it for about an hour. It IS a lot quieter than the bare PC4 Hex but either my pipe ID is under sized or this insert is oversized. For that, I give 2 stars as this insert was the reason I bought the PC4 in the first place. I even called FMF before I bought the insert to ensure I was ordering the right part number."
See all reviews for this product
FMF Factory 4.1 RCT Full Exhaust System

FMF Factory 4.1 RCT Full Exhaust System

Alex879 - NORTH CAROLINA
5 out of 5 stars
FMF 2011 KX250F "this has been amazing... noticed a performance difference with the bike. Sounds even better than stock does and fit perfect. Highly recommend"
See all reviews for this product