Bespoke
Performance
Tuning Parts.
Affinis Motor Sports was a Houston performance house born from JDM tuner culture — magazine-featured builds, an Attack series sponsorship, and a curated wall of the best Japanese tuning brands. Total car part supply. The storefront's retired; the instinct never left.
Guaranteed Fitment
Always the correct part.
In-House Experts
We know our products.
Added Value
Real recommendations, not upsells.
Bespoke Selection
Only the special stuff.
As fellow die-hard car enthusiasts, we know the importance of a great price — without giving up service.
We strive to provide only the most special, bespoke products to those who truly share our passion. Through our efforts, we express our level of commitment and dedication.
Do not settle for less. Affinis — you can put your trust in us.
What started as a Houston build bay turned into a full performance catalog: intake manifolds, turbo systems, exhaust, fitment-correct JDM hardware for the cars that actually matter.
The full history →The cars that made the name.
Builds don’t make magazines by accident. These earned their pages.
Nissan 240SX — straight-six swap
Super StreetAn R34-sourced straight-six swapped into a 240SX — serious engineering that Super Street wrote up as a straight-six sensation. The car that defined the shop.
Silvia S14 — USA build
TimeAttackRA USA-built S14 covered by TimeAttackR — proof the shop’s taste and execution carried across the whole S-chassis lineup, not just one hero car.
Series SponsorAffinis backed the Attack — Maximum Challenge time-attack series as a 2016–2017 sponsor, putting the name on the wall at one of Japan’s most hallowed circuits.
Mayday Garage
RootsForged inside Mayday Garage — the Houston collective that helped pioneer the city’s car-meet culture with some of the wildest JDM builds around. Driven hard, not trailer-queened.
Brands we carried.
The legends we built for.
The platforms the catalog was built around.
Car culture, shot in the open.
Cars & coffee, meets, and the machines that show up — through our lens.
The crews & blogs we run with.
The photographers, drivers, and media that shaped the culture.
The archive lives on Instagram.
The shop is retired, but the builds, the photos, and the culture keep rolling. Everything new lands there first.