The BASENOR Journal

Volume 01 · Issue 12 · Spring 2026

The BASENOR Journal

Engineering notes, teardowns, and design decisions from the Tesla accessory world.

228 products engineered  ·  1,000+ hours tested  ·  since 2017

Editorial Stance

We reverse-engineer OEM tolerances. We test until things break. And we publish what we learn — not when the marketing calendar says so, but when the work is worth documenting.

The Feature 10 min read
BASENOR TPE door pocket insert installed on a 2025+ Tesla Model Y Juniper front door, integrated flush with the factory armrest and door card
Issue № 12 · Model Y Juniper

Four of six competitor inserts block the emergency release.

Tesla's rear doors have a mechanical emergency release inside the door pocket. Most aftermarket inserts cover it. We scanned its location and cut a chamfered opening that guides your finger to it.

BASENOR Engineering · CA435

Read the full essay
The Journal is published irregularly. We release an essay only when a product has a story worth telling — a failure mode discovered, a tolerance battle won, a material science lesson learned. Subscribe below to be notified when Issue № 13 publishes.
The Archive
№ 11

Three of five competitor boxes broke our HVAC.

Model 3 Highland & Model Y Juniper · CA436

BASENOR Engineering
11 min read
№ 10

Tesla's sill isn't a rectangle. Our guard isn't either.

Model 3 Highland · CA384

BASENOR Engineering
10 min read
№ 09

The 191.6mm slot Tesla forgot to use.

Model 3 Highland & Model Y Juniper · CA380

BASENOR Engineering
9 min read
№ 08

We designed to the space between the rails.

Model 3 Highland · CA364-1 · Shipping since 2025

BASENOR Engineering
9 min read
№ 07

Two cup holders. One piece of TPE.

Model 3 Highland & Model Y Juniper · Shipping since 2025

BASENOR Engineering
9 min read
№ 06

0.91 millimeters. Still charges.

Model 3 Highland · Shipping since 2025

BASENOR Engineering
9 min read
№ 05

Universal-fit means nobody fits.

Model 3 · Shipping since 2025

BASENOR Engineering
7 min read
№ 04

The mud flap you have to look twice to see.

Model 3 · Shipping since 2025

BASENOR Engineering
7 min read
№ 03

The one spot on your Tesla that ages alone.

Model 3 Highland & Model Y Juniper · Shipping since 2025

BASENOR Engineering
9 min read
№ 02

We stopped asking how to make better tape.

Model 3 & Model Y · Shipping since 2025

BASENOR Engineering
9 min read
№ 01

Five prototypes. Two months. One armrest.

Model Y Juniper & Model 3 Highland · CA390 · Shipping since 2025

BASENOR Engineering
12 min read
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The BASENOR Journal is a publication by BASENOR Engineering, Tesla accessory specialists since 2017. Every product featured in these pages is already in production and shipping — these are engineering stories, not launch announcements. Published irregularly from our workshop.

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For methodology + equipment list: see How We Test Tesla Accessories →