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Side Fin

Universal 480 mm Lower Body Moldings, 2-Piece Kit

Ships within 48 h · delivery in 8 to 25 business days · 30-day returns

Becquet Voiture price −15%
101,90 € 120,90 €
You save 19,00 €

Price in cart: 91,71 €
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Finishing
Ships within 48 hours with tracking and insurance. Estimated delivery in 8 to 25 business days (France and EU).
Free shipping on orders over 99 €, otherwise 9,95 €.
30 daysto change your mind
Secure payment3D Secure, PayPal
Legal warranty2-year conformity guarantee
Expert advicereply within 24 business hours
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DescriptionEverything about this product

Universal side skirt fins: the detail that stretches the entire side

This pair of side fins attaches to the end of the side skirt, just behind the front wheel or in front of the rear wheel. Each piece measures 480 mm long, 120 mm wide, and 80 mm high: enough to create a real break in the line, discreet enough to look credible on a production car. The shape is universal and they are installed using adhesive, without touching the bodywork.

Why install side separators

  • Immediate visual effect: the fin marks the end of the side skirt and visually elongates the profile.
  • 480 x 120 x 80 mm: dimensions designed for compacts, sedans, and coupes, without overhanging the frame.
  • Semi-flexible ABS: the fin flexes when it hits a curb instead of breaking.
  • Two finishes: gloss black or carbon look, with UV-resistant clear coat.
  • Pre-applied double-sided adhesive: reversible installation, no drilling.
  • 2-piece symmetrical kit: left and right sides delivered as a pair.

Fin, duckbill, or separator: what are we talking about

A side fin — sometimes called a duckbill or separator — is a small vertical blade added to the end of a side skirt or fender. On race cars, it detaches the airflow from the side; on a road car, its role is primarily visual: it breaks the smooth surface of the lower bodywork and gives the impression of a wider track. It is also the logical complement to a front lip or a side skirt, when you want a stretched look without committing to a full kit.

Technical specifications

Compatibility: universal, on any flat side skirt. Measure the area before ordering.
Dimensions: 480 mm long, 120 mm wide, 80 mm fin height.
Contents: 2 pieces, left and right.
Material: Semi-flexible ABS.
Finishes: gloss black, carbon look.
Attachment: double-sided adhesive, no drilling.
Condition: 100% new.

Installation and maintenance

Allow 20 to 30 minutes for the pair. Wash and then degrease the area with isopropyl alcohol. Position the fin while dry and check the alignment of both sides with a tape measure, starting from the wheel arch: a 2 cm asymmetry is immediately noticeable. Work above 15°C, remove the film, press down for 30 seconds with firm pressure, then wait 24 hours before the first wash. Then, maintain it the same way as the bodywork.

Frequently asked questions

Where exactly should they be installed?
The most common installation is at the rear end of the side skirt, just in front of the rear wheel, or at the exit of the front wheel arch. Align both sides with a tape measure.

Will it scrape when going over a speed bump?
The fin protrudes 80 mm downwards. On a lowered car, measure the remaining ground clearance before permanently gluing it.

Do you need to drill the bodywork?
No, the attachment is with double-sided adhesive. The installation remains reversible using nylon string and adhesive remover.

Is the carbon look real fiber?
No, it is a woven film under clear coat applied to an ABS support. The visual result imitates fiber, while the price remains that of plastic.

Can they be painted in body color?
Yes: sand with 400-grit sandpaper, apply plastic primer, then clear coat. Do it before installation, as the piece is easier to treat flat.

Two pieces, twenty minutes, no drilling: the profile of your car changes at first glance.

Type: side fins / side separators
Compatibility: universal
Dimensions: 480 x 120 x 80 mm
Contents: 2 pieces, left and right
Material: Semi-flexible ABS
Finishes: gloss black, carbon look
Installation: 20 to 30 minutes on adhesive
Condition: 100% new

Vehicle compatibilityUniversal: fits most cars
Universal fit Universal: fits most cars

Check before ordering

  • Bumper finish (standard or sport): the parts follow its shape
Not sure? Send us your VIN and the link to this product: we check compatibility for free and reply within 24 business hours. Ask an advisor
Installation20 to 30 min · With or without drilling depending on the version, double-sided tape
DifficultyMedium
Time20 to 30 min
FixingWith or without drilling depending on the version, double-sided tape

In the box

  • 2 pieces
  • Left and right

Useful tools

  • Isopropyl alcohol
  • Masking tape
  • Screwdriver
  • Drill
  • Metal drill bits
  • Anti-rust product

Fitting steps

  1. Mark the position

    Offer the parts up to your vehicle's bumper and mark their position with masking tape. Check the package contents: 2 pieces, Left and right. Before fitting, check that the version received (Gloss Black, Carbon Look) is the one you ordered.

  2. Choose the mounting

    Depending on the version, the fins are fitted with or without drilling. Hold the part in place and locate the original points before drilling anything.

  3. Clean and degrease

    Wash the fitting area, then degrease it with isopropyl alcohol. Let it dry completely.

  4. Stick on the fins

    Dry-fit the fins, peel the film off the double-sided tape, then press firmly for 30 seconds over the whole surface.

  5. Check the symmetry

    Check that the left and right parts are at the same height.

  • Measure from a fixed reference point (headlight, wheel arch) for a symmetrical fit.
  • Fit above 59 °F (15 °C) and avoid washing for 24 h: the adhesive reaches full strength after that time.
Need help while fitting? Write to us with a photo: an advisor will reply within 24 business hours. Ask for help
Shipping and returnsShips within 48 hours · 30 days to change your mind
Order prepared and shipped within 1 to 2 business days, with a tracking link.
  • Delivery in 8 to 25 business days to France and Europe, 15 to 30 days to French overseas territories and the rest of the world. Shipping info.
  • Tracked and insured shipping (loss, damage, theft): 9,95 €, free on orders over 99 €.
  • 30 days after delivery to change your mind: item not fitted, in its original packaging.
  • Tracking link sent by email as soon as your order ships. Shipping policy · Return policy

Universal side skirt fins: the detail that stretches the entire side

This pair of side fins attaches to the end of the side skirt, just behind the front wheel or in front of the rear wheel. Each piece measures 480 mm long, 120 mm wide, and 80 mm high: enough to create a real break in the line, discreet enough to look credible on a production car. The shape is universal and they are installed using adhesive, without touching the bodywork.

Why install side separators

  • Immediate visual effect: the fin marks the end of the side skirt and visually elongates the profile.
  • 480 x 120 x 80 mm: dimensions designed for compacts, sedans, and coupes, without overhanging the frame.
  • Semi-flexible ABS: the fin flexes when it hits a curb instead of breaking.
  • Two finishes: gloss black or carbon look, with UV-resistant clear coat.
  • Pre-applied double-sided adhesive: reversible installation, no drilling.
  • 2-piece symmetrical kit: left and right sides delivered as a pair.

Fin, duckbill, or separator: what are we talking about

A side fin — sometimes called a duckbill or separator — is a small vertical blade added to the end of a side skirt or fender. On race cars, it detaches the airflow from the side; on a road car, its role is primarily visual: it breaks the smooth surface of the lower bodywork and gives the impression of a wider track. It is also the logical complement to a front lip or a side skirt, when you want a stretched look without committing to a full kit.

Technical specifications

Compatibility: universal, on any flat side skirt. Measure the area before ordering.
Dimensions: 480 mm long, 120 mm wide, 80 mm fin height.
Contents: 2 pieces, left and right.
Material: Semi-flexible ABS.
Finishes: gloss black, carbon look.
Attachment: double-sided adhesive, no drilling.
Condition: 100% new.

Installation and maintenance

Allow 20 to 30 minutes for the pair. Wash and then degrease the area with isopropyl alcohol. Position the fin while dry and check the alignment of both sides with a tape measure, starting from the wheel arch: a 2 cm asymmetry is immediately noticeable. Work above 15°C, remove the film, press down for 30 seconds with firm pressure, then wait 24 hours before the first wash. Then, maintain it the same way as the bodywork.

Frequently asked questions

Where exactly should they be installed?
The most common installation is at the rear end of the side skirt, just in front of the rear wheel, or at the exit of the front wheel arch. Align both sides with a tape measure.

Will it scrape when going over a speed bump?
The fin protrudes 80 mm downwards. On a lowered car, measure the remaining ground clearance before permanently gluing it.

Do you need to drill the bodywork?
No, the attachment is with double-sided adhesive. The installation remains reversible using nylon string and adhesive remover.

Is the carbon look real fiber?
No, it is a woven film under clear coat applied to an ABS support. The visual result imitates fiber, while the price remains that of plastic.

Can they be painted in body color?
Yes: sand with 400-grit sandpaper, apply plastic primer, then clear coat. Do it before installation, as the piece is easier to treat flat.

Two pieces, twenty minutes, no drilling: the profile of your car changes at first glance.

Type: side fins / side separators
Compatibility: universal
Dimensions: 480 x 120 x 80 mm
Contents: 2 pieces, left and right
Material: Semi-flexible ABS
Finishes: gloss black, carbon look
Installation: 20 to 30 minutes on adhesive
Condition: 100% new

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  • 30 daysto change your mind
  • Legal warranty2-year conformity guarantee
  • Expert advicereply within 24 business hours
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