Click to enlargeWR250R WR250X Pro Circuit<br>T-4 Performance Exhaust Package

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Home > Dual Sport > Yamaha WR250X/R Parts > Pro Circuit T-4 Performance Exhaust Package

The Pro Circuit T-4 Exhaust System is designed to increase performance from bottom to top, making your Yamaha WR250R / WR250X perform better. The stainless steel and aluminum construction offer increased strength and durability; ideal for racing and off-road riding. This system is also tunable, meaning you can remove the spark arrestor screen turning it into a race tip for closed course racing; fasten the screen back on for off-road riding.

The T-4 system for the WR250R / WR250X is the only one on the market that provides mounting points for the factory heat shields both on the header AND on the muffler itself. This allows you to attach your stock header heat shield to the Pro Circuit header, and also attach the stock muffler heat shield to the Pro Circuit muffler (See inset photo above).

Fitment: 2008-2017 Yamaha WR250R / WR250X

Weight Savings:
WR250R/X Stock Muffler w/ Heat Shield: 9.89 lbs
WR250R/X Stock Header w/ Heat Shield: 1.98 lbs
WR250R/X Stock EXUP motor and cables: 1.48 lbs
WR250R/X Stock FULL SYSTEM: 13.35 lbs

WR250R/X Pro Circuit T-4 Muffler: 5.60 lbs
WR250R/X Pro Circuit T-4 Header: 1.20 lbs
WR250R/X Pro Circuit T-4 FULL SYSTEM: 6.80 lbs

TOTAL WEIGHT SAVINGS: 6.55 lbs


PACKAGE INCLUDES THE FOLLOWING...

One (1) WR250R WR250X Pro Circuit T-4 Exhaust System (Muffler and Header):
  • Brushed aluminum canister
  • Stainless steel head pipe and end-cap
  • Strong aluminum mounting bracket
  • TIG welded
  • Designed for easy disassembly and re-packing when needed
  • Removable USFS approved spark arrestor
  • Mounting points for stock header and muffler heat shields
  • Big Weight savings compared to OEM

    ** OPTIONAL: EFI Controller (adds $225 to package price):
    An EFI (Electronic Fuel Injection) Controller, like the one from EJK (ElectronicJetKit.com) or FMF Racing, is HIGHLY recommended any time you install an aftermarket exhaust and/or air filter on your fuel injected bike, otherwise you will see little to no performance gains, and the bike may even run poorly.
  • Pre-programmed specifically for the Yamaha WR250R/X with Stage 1 mods
  • Simple install. Plugs into existing wiring using the stock connectors
  • Unlike most other fuel-injection programmers, this one is load-sensitive
  • Additional tuning can be done and no laptop or software is required
  • Your choice of EJK brand or FMF brand (they both work identically)

    ** OPTIONAL: EXUP Servo Emulator (adds $55 to package price):
  • When you remove the OEM Yamaha WR250R/X exhaust, you will also be removing the EXUP cables and motor that are attached to the exhaust. This is a simple task, and involves un-plugging the EXUP Servo motor. 12oClockLabs offers an EXUP Servo Emulator which plugs right in so you're bikes computer won't realize you've removed anything. This optional part is highly recommended anytime you remove the OEM exhaust. Choose the option below if you want us to include it as part of the package.

    ** OPTIONAL: AIS Block Off Kit (adds $20 to package price):
  • When installing an aftermarket exhaust on your WR250R/X, the AIS (Air Induction System) is no longer serving any purpose and will cause backfiring/popping on deceleration. Once you remove the AIS from the bike, this kit can be used to block off the port/hose on the bike.


    Video Review:




    ** OUT OF STOCK - This item is currently on backorder. Check back for availability.


    NOTE: To see configured price for the package, choose options below and click "ADD TO CART"...


    WR250R WR250X Pro Circuit T-4 Performance Exhaust Package
    4Y09250WRXRetail Price: $779.99Our Price: $639.95
    Exhaust System: 
    EFI Controller: 
    EXUP Servo Emulator: 
    AIS Block Off Kit: 
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