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Compare direct-fit & high-flow catalytic converters for the 2003-2008 Nissan 350Z & Infiniti G35 (VQ35). Spec...

Compare Audi RS3 brake rotor upgrades: GiroDisc vs EBC Racing 2-piece kits for the 8V & 8Y 2.5T. Specs, weights, ...

Install 2005-2013 C6 Corvette LED headlights, halo DRLs, and LED tail lights. Full step-by-step guide with fitment, t...

Audi RS6 brake upgrades for the C5, C6 and C7: compare GiroDisc, EBC and DFC slotted two-piece rotors from $586 to $1...

Compare the best BMW F8x M3/M4 sway bars for 2015-2020: aFe Control, H&R, Eibach and Whiteline. Adjustable bars, ...

Compare the best Audi B9 S4, S5 & RS5 coilovers (2017-2020): Ohlins, Bilstein, KW & H&R. Specs, drop, dam...

KW V2 coilovers for the W211 Mercedes E55/E63 AMG: 1.2-2.3in lowering, 16-click rebound, TUV-approved. Full review, s...

Best BMW M6 suspension upgrades for the 2012-2018 F06/F12/F13: KW H.A.S., ST, H&R & AST springs that lower th...

Compare the best 2004-2006 Pontiac GTO cooling upgrades: Mishimoto oil coolers, aluminum radiators, and silicone hose...

Compare the best Dodge Challenger headlights for 2008-2023: Oracle ColorSHIFT halos vs Anzo crystal housings, priced ...

Borla cat-back exhaust review for the 1998-2002 LS1 Camaro & Firebird: T-304 stainless, quad tips, real power gai...

Compare the 5 best Kia Stinger GT cat-back exhausts (2018-2023) from aFe, Borla, MBRP & MagnaFlow. Sound, materia...