What do rear fins do on a Model Y?

Question

Unplugged Performance · Accepted Answer

As air travels down the body it can peel away too early and spill into the wake, which creates drag and a less settled feel. Mounted at the outer edges of the rear bumper, these fins act as subtle fences that help the airflow stay attached a little longer before it enters the wake. Keeping the side flow organized supports pressure recovery at the rear, so you get calmer air, better highway stability, and a more planted rear end.

Q: What do rear fins do on a Model Y?

Will these fins jeopardize my Tesla warranty?

When do the rear fins ship?

Will the rear fins fit a non-Performance 2026 Model Y?

How hard is it to install, and can Unplugged Performance do it for me?

Does a body kit actually do anything on a Model Y, or is it just for looks?

What comes in the 2026 Model Y Performance aero package?

Will the full kit fit my Model Y Long Range, or is it Performance only?

Is this the 2026 Tesla Model Y body kit that works on the Juniper refresh?

Is the aero kit reversible if I lease my Model Y?

How does the full kit compare to just adding the trunk spoiler by itself?

Will the kit hurt my range or make the car louder?

What are the mirror covers made of, and do they change anything aerodynamically?

Will fitting this aero kit affect my Tesla warranty?

What does a trunk spoiler do on a Model Y Juniper?

How is this spoiler backed if something goes wrong?

Can I still wrap or repaint it later?

Is the Juniper spoiler tested, or is the aero claim marketing?

Does this spoiler fit a non-Performance Model Y like the Long Range or RWD?

Will this spoiler fit my 2021 or 2023 Model Y?

How is it installed, and does it require drilling?

Should I get the spoiler alone or the whole aero package?

Does adding this spoiler improve efficiency day to day?

When does the next batch of spoilers ship?

Could adding a spoiler void my Tesla warranty?

What color and finish does the spoiler come in?

Can I run the splitter by itself, or does it need the rest of the kit?

When will a set actually ship?

Do the canards change how the front looks, or is it purely functional?

Does this splitter fit a non-Performance Juniper or an older Model Y?

What does a front splitter change on a Model Y Performance?

How many mounting points does it use, and is the install reversible?

Is this carbon fiber?

Can I fit the splitter at home, or is this a shop job?

How is a splitter different from adding canards up front?

Does the splitter hurt range or efficiency?

When does the next batch ship?

Does it look aggressive or stay subtle?

What makes the Koenigsegg version different from the standard trunk spoiler?

What is the Arrow-weave construction?

Are these mirror covers meant to be removed and refitted often?

Do these canards fit a 2020 to 2024 Model Y?

What do canards actually do on a car like the Model Y?

Do they change the mirror shape or just the surface?

Will UP install these in Hawthorne?

Do these replace the whole mirror or just cap over it?

Is there a warranty on the carbon, and does it cover fading?

Gloss or satin, which finish should I pick?

What kind of carbon are the covers, prepreg or a cheaper layup?

How much drag do these actually save?

What are vortex generators and why are they on a mirror cover?

Do these mirror covers fit the 2020 to 2025 Model Y?

How quickly can I get it?

Is the range benefit real or just marketing?

How is this different from the high-efficiency trunk spoiler?

What warranty backs it?

Is drilling required to fit it?

Who actually makes the Ascension-R wing?

Does mounting this wing require drilling into my trunk?

Does the Ascension-R work on a Juniper trunk or only the first-gen car?

Will this wing block my rear view?

Is the wing carbon fiber, and how is it built?

Does the Ascension-R make sense for a daily-driven Model Y?

Should I have the drilled mount done professionally?

What warranty covers the wing?

Does the wing add downforce or is it mostly for show?

Will a front lip spoiler help my Model Y at speed?

Does it fit any Model Y or just certain years?

Did the Ascension fascia affect parking sensors or Autopilot?

Does installing it require drilling?

How is this carbon made, and is it real dry carbon?

How does it compare to the Ascension-R racing wing?

Will it noticeably change how the car looks?

Is the efficiency gain actually noticeable day to day?

What finishes can I get, and which lasts best?

Can I take it back to stock if I sell the car?

Is the Model Y Ascension Front Fascia still available?

What was the Ascension Front Fascia made of?

If I want that aggressive front look now, what should I buy instead?

Is this a real diffuser or a cover that sticks over the stock one?