STi Mods Blog

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HT Autos Front Lip Spoiler for WRX/STI

This functional front lip aids in guiding airflow across and around the nose of your WRX or STI. Attaches using OEM body fasteners, plus additional hardware (included) for a totally secure fit. Black polyurethane....

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STi WRX Hatchback Axle Back Exhaust

This PERRIN hatchback exhaust features 4, 3.5″ slash cut exhaust tips adds an aggressive look to this impressive system. Made entirely of 304 stainless steel, inside and out. Also provides high corrosion resistance, and...

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HiFlow Exhaust Manifold Crosspipe

The stock exhaust manifold crossover. 50% of your exhaust gasses are passing through this tiny tiny pipe and that is not good. Well here comes the solution for this problem. Welcome the GrimmSpeed Version...

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Water Pump Housing for STi

Killer B’s Water Pump Housing is a much more robust design. Designed using state of the art 3-D CAD software to assure maximum flow with minimum turbulence for the best performance possible! – 3D...