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4-Stroke Exhaust Systems

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169 Results

Yoshimura
LE Tim Gajser Signature RS-9 Full System Exhaust

$1705.50
Clearance
Save 10%
4 out of 5 stars (1) review

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

$1329.05
Sale
Save 5%
4.5 out of 5 stars (6) reviews

Yoshimura
RS-9D Complete Exhaust With Titanium Header - Dual

$1262.55 - 1329.05
Sale
Up to 5%
Video Available

Pro Circuit
Ti-5 Complete Exhaust - Dual

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

Pro Circuit
Ti-6 Complete Exhaust - Dual

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

Pro Circuit
Ti-6 Pro Complete Exhaust - Dual

$1189.99 - 1369.99
Sale
Up to 10%

FMF
Factory 4.1 Dual RCT Complete Exhaust With Titanium Megabomb

$1124.99 - 1349.99
Sale
Up to 10%
5 out of 5 stars (7) reviews

Pro Circuit
Ti-5 Complete Exhaust

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

Pro Circuit
Ti-4R Complete Exhaust

$924.99 - 944.99
Sale
Up to 10%
4.5 out of 5 stars (6) reviews

Pro Circuit
Ti-6 Pro Complete Exhaust

$924.99 - 1118.21
Sale
Up to 10%
4.5 out of 5 stars (9) reviews

Graves
Works Stainless Full System Exhaust

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

Pro Circuit
Ti-6 Complete Exhaust

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

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

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 Titanium Full System Exhaust

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

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

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

Pro Circuit
T-6 Complete Exhaust - Dual

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

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

$806.55 - 1325.25
Clearance
Up to 5%
4.5 out of 5 stars (5) reviews
Video Available

Pro Circuit
T-4R GP Complete Exhaust

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

Yoshimura
RS-9T Slip-On Exhaust - Dual

$729.00 - 749.00
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

GYTR
Stainless Steel Exhaust System - 99 dBA

$709.95
5 out of 5 stars (1) review

Pro Circuit
T-6 Slip-on Exhaust - Dual

$707.99 - 708.99
Sale
Up to 10%

Yoshimura
RS-9D Slip-On Exhaust - Dual

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

Yoshimura
RS-12 Full System Exhaust

$669.00 - 1139.00
Video Available

KTM PowerParts
FMF Factory 4.1 RCT Muffler

$649.99
5 out of 5 stars (1) review

Akrapovic
Slip-On Line Exhaust

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

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 Slip-On Exhaust - Dual

$629.99 - 899.99
Sale
Up to 10%
5 out of 5 stars (10) reviews

FMF
Factory 4.1 RCT Complete Exhaust With Titanium Megabomb

$629.99 - 1034.99
Sale
Up to 10%
4.5 out of 5 stars (11) reviews

FMF
Q4 Hex Exhaust With Megabomb Header and Side Panel

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

Akrapovic
Racing Full System Exhaust With Spark Arrestor

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

KTM PowerParts
Akrapovic Factory Silencer

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

Pro Circuit
T-5 Complete Exhaust

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

Yoshimura
RS-4 Comp Series Complete Exhaust With Stainless Header

$569.05 - 689.00
Sale
Up to 5%
4 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

Yoshimura
RS-4 Full System Exhaust

$540.55 - 968.05
Clearance
Up to 19%
4.5 out of 5 stars (20) reviews

FMF
Factory 4.1 RCT Full Exhaust System

$517.48 - 1079.98
Sale
Up to 10%
4.5 out of 5 stars (4) reviews

Big Gun
Evo R Complete Exhaust

$512.99 - 569.99
Sale
Up to 10%
4.5 out of 5 stars (26) 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