ABOUT
The Workshop
Siam Prototype Cambodia is a specialist garage in Phnom Penh. We focus on four lines of work: custom builds, body kit installation, 4x4 preparation, and dyno tuning. The work we take on is the work most shops cannot do.
Our facility is equipped with multiple bays, car lifts, a professional paint booth, a dedicated welding and fabrication area, and an in-house dyno room. The harder parts of the job stay in-house.
For 4x4 preparation we work with FOX, ARB, WARN, Gigglepin, PIAA, and the brands serious off-road builds depend on. For body kits we handle widebody conversions, carbon aero, and air suspension. For tuning we run an in-house dyno.
The Founder
Siam Prototype was founded by Tea Siam, Vice President of the Cambodia Motor Sports Federation. He builds, crews, and races. Recent results: 1st in Class Pro Dragster (Petrol) and 2nd overall at Souped Up 2024 with a 6.899s quarter-mile; 3rd place Class T2D-A at the Asia Cross Country Rally 2022; Class A Champions at the Sihanoukville International Offroad Challenge 2024.
See the motorsport programs for the full record across drift, drag, rally, and 4x4 extreme.
Tea Siam is also the founder of RWB Cambodia, the Cambodian chapter of Akira Nakai's RAUH-Welt BEGRIFF. And he runs Cambodia Car Culture, the media brand documenting the country's automotive scene across YouTube, Facebook, Instagram, and TikTok.



SISTER BRAND
RWB Cambodia
RAUH-Welt BEGRIFF in Cambodia. Built by Nakai-san at Siam Prototype's workshop. The two brands share an owner, a workshop, and a philosophy: build it right, by hand.
Visit RWB Cambodia →