Composite Intake Manifold

The Boyesen RAD-41C is a high-performance intake manifold engineered for select Husqvarna and KTM dirt bikes with carbureted, single-cylinder engines. Its design utilizes a seamless, one-piece, precision casting with continuous aero-form surfaces, which Boyesen states ensures maximum flow velocities for instant, explosive power movement. Constructed from durable composite materials, the RAD-41C is built to enhance throttle response and increase horsepower. Users have reported noticeable improvements throughout the RPM range after installation. This reed valve is compatible with a range of KTM models, including the 125 EXC, 125 SX, 144 EXC, and 144 SX from 2015, as well as the 144/150 SX from 2007-2008. It also fits Husqvarna TC 125 models from 2014-2015 and TE 125 models from 2014-2016. Additionally, it is listed for KTM 150 XC models from 2008-2015 and KTM EXC 200 models from 2003. Some sources mention it for KTM SX 125 (2015) and KTM SX 144 (2010).