WheelSTO is proud to offer the Challenge line of products for the E9x M3 Community. Challenge Engineering X Pipes for the E9x M3 are made of 304 stainless steel and hand built in the United States. They are offered in three different varieties: Street, Sport and the Race.
We have the Challenge E9x M3 X-pipes in stock and ready to ship
Street - OEM Catalysts
The Challenge Street X Pipe features 304 stainless steel piping and flanges, twin high flow resonators, and a precision fabricated X section. This pipe slip fits after your OEM cats, for easy installation with NO check engine lights! Best of all, no exhaust smell to alert the law at inspection. All bolts, gaskets, and stainless clamps necessary for install are included.
Features:
- Made in the USA
- Full stainless steel construction
- Laser cut and formed mounting brackets
- 2.5 in Piping
- Twin resonators for noise and drone reduction
- Retains factory primary cats
- No check engine light
- Flanged design for easy installation and upgrade options
- 10 wheel hp and 15 ft tq gains with factory exhaust
- Increased low end power
MSRP: $1095.00 USD
Race - Catless
The Challenge Sports X Pipe features 304 stainless steel piping and flanges, twin high flow resonators, and a precision fabricated X section. This is a full bolt on solution that connects directly to the OEM header flange. All bolts, gaskets, and stainless clamps necessary for install are included. ECU reflash or CEL deleter is required to turn off the check engine light
Features:
- Made in the USA
- Full stainless steel construction
- Laser cut and formed mounting brackets
- 2.5 in Piping
- Twin resonators for noise and drone reduction
- Full bolt on installation
MSRP: $1695.00 USD
Sports - High Flow Catalysts
The Challenge Sports X Pipe features 304 stainless steel piping and flanges, twin high flow resonators, 200 cel High flow metallic race Catalysts, and a precision fabricated X section. This is a full bolt on solution that connects directly to the OEM header flange. All bolts, gaskets, and stainless clamps necessary for install are included. Get all the performance gains without the exhaust smell! ECU reflash or CEL deleter is required to turn off the check engine light
Features:
- Made in the USA
- Full stainless steel construction
- Laser cut and formed mounting brackets
- 2.5 in Piping
- Twin resonators for noise and drone reduction
- Full bolt on installation
- Twin 200 cell cats
MSRP: $1995.00 USD