The KTM SX ATV 505 is a Sport Style ATV equipped with an 477cc, Liquid Cooled, Single-Cylinder, SOHC, 4-Stroke Engine and a Manual Transmission. It has a 4X2 driveline. The SX ATV 505 has a Double A-Arm Front Suspension with 9.6 inches of travel while the Swing Arm Rear Suspension has 10.2 inches of travel. To enhance this raceready machine, we developed a Performance Series slip on system that will get 10% more horse power over stock while the Full System gets 10-15% more.
About the HMF Competition Series: The new HMF Competition Series exhaust was designed and tested for Sport ATVs and Dirtbikes. The Trimax Core technology features 3 levels of power and sound, allowing you to dictate the type of power and sound you need, when you need it. Included with every exhaust are 3 removable inserts, each of which effect the sound and power in different ways, giving the rider complete control.
Stage 1 uses an insert that restricts sound levels extensively yet produces industry leading power at that dB level.
Stage 2 uses a different sound altering insert that partially lowers sound levels without losing much horse power.
Stage 3 acts as an unrestricted core producing high dB levels with industry leading power throughout the RPM range.
The new Euro End Cap is forged out of 304 Stainless Steel and adds an incredible sound output. Stainless Steel rivet bands are wrapped around the shell and air riveted in for more durability and security.
About the HMF Performance Series: Setting the standard for power and value, the HMF Performance Series has been tested for over a decade with endless championships. The specially designed, unrestricted core allows the exhaust to increase power evenly throughout the entire power curve. The Performance Series has the signature HMF sound with industry-leading end cap and color options, giving you a completely custom look and sound.
All HMF exhausts feature:
- USFS approved spark arrestor included
- 304 stainless steel flanges, headpipes & S-bends
- Tough T6061 aluminum or lightweight Carbon Kevlar exhaust shells
- Volumized, high performance glass wool packing
- Significantly lighter when compared to stock systems
- Made in the U.S.A.
HMF Recommended Jetting for KTM 450/505 SX (09-10)
2009: Slip on: Unavailable. Contact Us for more details.
- These settings were determined on our dyno at 900ft - 60°F
- Bikes must be jetted for valid exhaust warranties.
Resources for KTM 450/505 SX (09-10)
