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4-Stroke Exhaust Systems

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169 Results

Yoshimura
TRS Comp Series Complete Exhaust With Stainless Header

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

Yoshimura
TEC Insert

$24.95
4 out of 5 stars (1) review

Yoshimura
Spark Arrestor Insert

$33.20 - 33.95
Sale
Up to 5%
4 out of 5 stars (2) reviews

Yoshimura
Spark Arrestor

$19.95
4.5 out of 5 stars (7) reviews

Yoshimura
RS-9T Slip-On Exhaust - Dual

$729.00 - 749.00
5 out of 5 stars (5) reviews

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

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

Yoshimura
RS-9D Slip-On Exhaust - Dual

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

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

$1262.55 - 1329.05
Sale
Up to 5%
Video Available

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

Yoshimura
RS-4 Titanium Full System Exhaust

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

Yoshimura
RS-4 Slip-On Exhaust

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

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

Yoshimura
RS-4 Full System Exhaust

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

Yoshimura
RS-4 Comp Series Slip-On Exhaust With Carbon Fiber End Cap

$409.00 - 449.00
5 out of 5 stars (18) 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

Yoshimura
RS-3 Comp Series Slip-On Exhaust

$399.00
4.5 out of 5 stars (13) reviews
Video Available

Yoshimura
RS-3 Comp Series Full System Exhaust

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

Yoshimura
RS-2 Comp Series Slip-On Exhaust

$339.00 - 419.00
Sale
Up to 5%
5 out of 5 stars (15) reviews
Video Available

Yoshimura
RS-2 Comp Series Full System Exhaust

$339.00 - 699.00
Clearance
Up to 10%
5 out of 5 stars (47) reviews
Video Available

Yoshimura
RS-12 Full System Exhaust

$669.00 - 1139.00
Video Available

Yoshimura
Quiet Insert - RS-4

$28.45 - 28.95
Sale
Up to 5%
3 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

Yoshimura
Low Volume Insert For RS-4 Exhaust

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

Yoshimura
LE Tim Gajser Signature RS-9 Full System Exhaust

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

Two Brothers
S1R Slip-On Exhaust

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

Two Brothers
M-7 Slip-On Exhaust

$310.23 - 494.98
Sale
Up to 15%
4.5 out of 5 stars (16) reviews

Pro Circuit
Ti-6 Pro Complete Exhaust - Dual

$1189.99 - 1369.99
Sale
Up to 10%

Pro Circuit
Ti-6 Pro Complete Exhaust

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

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 Complete Exhaust

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

Pro Circuit
Ti-5 Carbon End Cap

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

Pro Circuit
Ti-4R / GP Midpipe

$251.99
Sale
Save 10%

Pro Circuit
Ti-4R / GP Headpipe

$288.99
Sale
Save 10%

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-4 Slip-On Exhaust

$449.99 - 520.99
Sale
Up to 10%
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

Pro Circuit
TI-4 GP Complete Exhaust

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

Pro Circuit
T-6 Slip-on Exhaust - Dual

$707.99 - 708.99
Sale
Up to 10%

Pro Circuit
T-6 Slip-On Exhaust

$342.77 - 737.99
Clearance
Up to 30%
4.5 out of 5 stars (12) reviews

Pro Circuit
T-6 Full-System Exhaust

$346.99 - 368.99
Sale
Up to 10%

Pro Circuit
T-6 Complete Exhaust - Dual

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

Pro Circuit
T-6 Complete Exhaust

$331.99 - 765.99
Sale
Up to 10%
5 out of 5 stars (8) reviews

Pro Circuit
T-5 Slip-On Exhaust

$440.99
Sale
Save 10%
4 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
T-4R GP Complete Exhaust

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

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

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

Pro Circuit
T-4 Slip-On Exhaust

$297.99 - 440.99
Sale
Up to 10%
4.5 out of 5 stars (18) 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