Our Customer Rewards Program leads the industry! Earn 5% STG CASH Rewards on every dollar you spend with us that is credited to your account automatically (max $30 per order). Select Brands are excluded, please Click Here for more details.
Free Domestic Shipping for Orders over $99Any domestic order (lower 48 United States) over $99.00 ships for free! If your item isn't over $99 but your total cart value is, you'll qualify for free shipping as well! For more information on our Shipping Policies, click here.
Hassle Free Returns No Restocking FeesHere at STG we want any return or exchange to be quick and pain-free. You can contact anyone here to expedite your return or exchange and we'll make sure it's handled ASAP. For more information on our policies, click here.
New modular end cap allows easy tuning alterations
Standard Hi-Flo 2" end cap boosts all-around performance; optional smaller 13/4" end cap smooths power delivery; spark arrestor module adds off-road versatility
Computer designed and dyno tested for every 4-stroke application
Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power
A stainless steel mid-pipe mates to the computer-designed aluminum rear can for lightweight durability
Square or round (depending on the machine) perforated steel inner cores make for optimum flow, using hi-flo technology
FMF's exclusive cross-weave internal packing provides longevity and maximum sound dispersion
Elliptical aluminum can offers strategic sizing for superior performance
Optional Quiet Core insert will provide a decrease in sound level if desired
PowerCore 4 SA (spark arrestor) features a patented screen-type spark arrestor that is approved by the U.S.F.S. and does not interrupt exhaust flow so there's no performance loss
The PowerCore 4 SA system's strategic ports allow the sonics to evacuate more effectively with the computer-designed Performance Flow end cap