The race-proven RS-4 exhaust system is the most advanced performance off-road exhaust Yoshimura has to offer, and that system is now available for 2010-11 Suzuki RM-Z250s. The addition of an RS-4 exhaust system will give your Suzuki a great boost in power that you'll feel from right off
idle all the way to redline.
The RS-4 features a unique duplex chamber design that delivers optimal noise reduction without impeding the flow of exhaust gasses. This means you'll get more power without the excessive noise commonly associated with high performance exhaust systems. Noise levels can be further tuned through the use of the RS-4's interchangeable volume inserts, from the USFS approved insert to the AMA Pro Racing legal insert.
RS-4 exhausts also feature legendary Yoshimura build quality from high-grade materials that can take whatever you might throw at it and keep performing. The RS-4 Slip-on is constructed from stainless steel and aluminum for strength and lightness, while the RS-4 Full System features stainless/aluminum, titanium/titanium or titanium/carbon finishes for that factory look. Each RS-4 system also includes high-quality hardware and instructions for an easy installation.
Each of these exhausts can also be paired with a Yoshimura PIM-2 unit and DATA box accessory for even more power. The PIM-2 unit remaps your Suzuki's fuel-injection system with one of the two included maps (designed for use with a Yoshimura Slip-on or Full System), or one of the additional maps available for download from the Yoshimura website. The PIM-2 installs in minutes, and comes with a mounting bracket and hardware.
For those looking to extract the best possible performance from their machine, the DATA box accessory can be combined with the PIM-2 unit to create custom fuel maps to match the user's requirements. The DATA box accessory will help you get the most out of your Suzuki without the need for an expensive dyno tune. Like the PIM-2, the DATA box includes a mounting bracket and mounting hardware.
