- Designed to be used with OEM stock head pipes or Pro Circuit head pipes
- Ultra-responsive performance
- Incredible horsepower gains when compared to stock
- Developed to increase the horsepower and torque throughout the power curve
- Aluminum/stainless construction for reduced weight and increased durability
- Strong mounting bracket(s) for increased durability
- Designed for easy disassembly and re-packing when needed
- Removable USFS approved spark arrestor
KTM -- 400 MXC -- (2000, 2002, 2001); KTM -- 400 EXC -- (2002, 2001, 2000); KTM -- 400 SX -- (2001, 2002, 2000); KTM -- 250 EXC -- (2003, 2002); KTM -- 450 MXC -- (2003); KTM -- 520 MXC Racing 4-Stroke -- (2001, 2002, 2000); KTM -- 520 EXC Racing 4-Stroke -- (2000, 2002, 2001); KTM -- 525 MXC Racing 4-Stroke -- (2003); KTM -- 520 SX Racing 4-Stroke -- (2001, 2002, 2000); KTM -- 450 EXC -- (2003); KTM -- 525 EXC Racing 4-Stroke -- (2003); KTM -- 525 SX Racing 4-Stroke -- (2003)