Same-day shipping cutoff: Noon Pacific Time

Spring time is in full swing here at ProCycle.  With these busy days please be sure to let us know if your order is time sensitive.  We try to do as much as we can to accommodate your upcoming trip.  

Exhaust

Model
Made In

Exhaust Gasket

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
KLX140(R) '08 - '25 KLX140L(RL) '08 - '25 KLX140G(RF) '17 - '25

The headpipe gasket seals the joint between the head pipe and Exhaust port. These gaskets are designed to crush a little bit to tightly seal where the pipe fits to the head, thereby making them a single use part. Get a fresh one now avoid having an exhaust leak when you install your new exhaust.

The muffler joint gasket seals the joint between the head pipe and muffler. These gaskets are easily damaged when removing the original muffler. Get a fresh one now to ease installation of your new performance muffler.

Choose Gasket
Ships in 3-5 business days
$5.95

Exhaust System: Big Gun EVO-R

Made in USA WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
KLX140(R) '08 - '25 KLX140L(RL) '08 - '25 KLX140G(RF) '17 - '25

The EVO R is a tried-and-true series that will save weight, add noticeable performance gains and sound tremendously better than stock.

  • Hard anodized oval shaped aluminum muffler
  • TIG welded reinforced muffler bracket(s)
  • 304 stainless steel mid pipe / head pipe
  • Red powder coated stainless steel end tip
  • Lighter than stock exhaust system
  • Huge horsepower and torque gains
  • Sleek muffler design allows for maximum clearance
  • Removable screen-type spark arrestor included
Please contact us for availability information
$373.95

Exhaust System, Pro Circuit T-6

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
KLX140(R) '08 - '25 KLX140L(RL) '08 - '25 KLX140G(RF) '17 - '25

The T-6 Stainless Steel Exhaust System offers the same benefits as our popular Ti-6 Titanium Exhaust System, but the T-6 is constructed of stainless steel and aluminum for increased strength and durability while giving riders a more affordable alternative to titanium. The T-6 comes with a removable United States Forest Service (USFS) Approved Spark Arrestor making it easy to alternate between off-road and closed course riding.

Features:

  • Improved performance
  • Titanium canister
  • Stainless steel header
  • Carbon fiber end-cap
Please contact us for availability information
$465.95

Muffler, Slip-On FMF

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
KLX140(R) '08 - '25 KLX140L(RL) '08 - '25 KLX140G(RF) '17 - '25

Delayed stock from manufacture, please ask for availability.

  • The Mini Powercore 4 is the best bang for your buck performance bolt on for your mini
  • Superior power and performance - horsepower improved throughout the rpm range
  • Feature exclusive proprietary Chamber Core technology
  • Factory Forward Engineering centralizes mass, improves handling
  • Made from premium quality American materials
Please contact us for availability information
$269.95

Muffler, Slip-On Yoshimura RS-9

Made in USA WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
KLX140(R) '11 - '25 KLX140L(RL) '11 - '25 KLX140G(RF) '17 - '25
  • Dual-muffler design exhaust system
  • Achieves maximum performance, mass centralization, and rider usability
  • Systems feature three-stage tapered headpipe for the best power gains, better throttle response and power delivery
  • Vertical divider splits the exhaust gases more evenly for smoother flow to the mufflers for better mid-top power and throttle response
  • Parallelogram-shaped muffler bodies increase muffler volume over the stock system for even crisper throttle response and reduced noise levels
  • Systems meet AMA noise sound regulations right out of the box (AMA 2-Meter Max and Amateur 94 dB sound compliant)
  • Muffler inserts are tunable to adjust power delivery and noise level
Please contact us for availability information
$499.95