ESSENTIALS
Owner: William Chang
Location: Brea, CA
Vehicle: 2013 Kia Optima SX
Horsepower: 295hp, 290ft/lbs torque
Club: Concept Nation
Facebook: William Chang
Instagram: @concept3
ENGINE/PERFORMANCE
- Upgraded front-mount intercooler
- HKS SSQV4 blow off valve
- K&N air filter
- Torque Solution throttle body spacer
- HKS M45XL spark plugs
- Custom powder coated hardware
PERFORMANCE ELECTRONICS
- Racepak IQ3S
- AEM boost gauge
EXHAUST
- JUN B.L. exhaust
- Megan Racing downpipe
WHEELS/TIRES
- Avant Garde F431 wheels - 20x9.5 +42 (f), 20x10.5 +37 (r)
- Michelin Pilot Sport 4 S tires - 225/35/20 (f), 245/35/20 (r)
BRAKES
- R1 Concepts 8-piston calipers, 2pc 380mm drilled rotors (f); 6-piston calipers, 2pc 365mm drilled rotors (r); ceramic pads
- Motul 660 fluid
CHASSIS/SUSPENSION
- Air Force air suspension
- Neo Tech sway bars (f/r)
- Luxon front strut bar, custom-chromed
- Neo Tech camber arms (r)
EXTERIOR
- Garcia Factory lip kit
- Seibon hood, trunk
- MyRide roof spoiler
- Concept-3 rear diffuser
- KeenDesign trunk spoiler
- Gp_Grahpics roll call and decals
- Indy Paints front emblem shave
LIGHTING
- KDM headlights with FlyRyde demon eyes
- Ex-Led taillight blinker with dual reverse light modification with smoke out inserts (Gp_Graphics), interior LED kit
- Titan RGB underglow
- Sylvania RGB trunk lighting
- Center console LED panels
INTERIOR
- New-Face shift knob
- Recaro Sportster CS w/heard option
- KDM dual layer floor mats
- Cyphier harness bar
- Kia Mobis KDM center console
- Hyundai Mobis folding mirror module
- Hyundai Mobis K5 door sills
SPONSORS
- R1 Concepts
- Ultra Dash
- Killerwaxx
- Jun B.L.
- Gp_Graphics
- Recaro
- Michelin
SHOPS
- Rob Soto @ Star Automotive, Brea, CA
- Andy Romero @ Firestone La Habra, CA
Related Articles

Air Lift Performance just pulled the wraps off ALP4 - its latest air management system - and it’s a big shift toward simplification and refinement for...

Nestled in the heart of Pennsylvania, the Carlisle Import & Performance Nationals once again roared to life on May 16-17, filling over 82 acres of...

Bag Riders, a leader in air suspension solutions, is proud to introduce the new PRO Control System—a high-performance, cost-effective air...

I’m not saying we here at PASMAG are going to dive head-long into the prediction business, but we really nailed it when we said on the latest episode...
The Nissan Z sports coupe was all-new for a seventh generation in 2023, and last year the top-line Nismo was introduced.
We were lucky enough to get...

As a car journalist, I spend my days writing about and reviewing other people’s builds – their visions, their stories. I analyze, critique, and...