Borla Cat Back Exhaust 2011-2014 WRX / 2008-2014 Subaru STI Hatchback vendor_GSC Power Division The three spoke design is

The three spoke design is accented with matching color inserts to fit your style

This lower weight yields a large reduction in the rotating inertia of the belt train

which is durable

Evo 9) Need a flywheel

it's a rebadged Walbro

Borla Cat Back Exhaust 2011-2014 WRX / 2008-2014 Subaru STI Hatchback vendor_GSC Power Division The three spoke design isPart #: 140312 Borla Catback Exhaust for the Subaru WRX and STI is a full stainless steel exhaust system that uses slip fittings for easy install and removal. The piping tapers to 2. 5in right before connecting to the downpipe for great fitment using stock or aftermarket downpipes. This system does not have any resonators and will be fairly loud, but not overly noisy and annoying. It will however net you some serious gains through out the power band