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).
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
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 PARTS THAT CAN BE ADDED TO THE PACKAGE INCLUDE...
** OPTIONAL: EFI Controller (adds $225 to package price):
An EFI (Electronic Fuel Injection) Controller, like the one from EJK (ElectronicJetKit.com), 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.
In Stock - Usually leaves our warehouse in 1-2 business days
NOTE: This item cannot be shipped to California.
NOTE: To see configured price for the package, choose options below and click "ADD TO CART"...
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