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Certified EssilorLuxottica distributor An international benchmark for Ray-Ban and Oakley replacement parts Over 600,000 glasses restored in 50+ countries New High-precision custom engraving on your lenses 3-year warranty on all replacement parts Compatible Quality and savings to renew your glasses Certified EssilorLuxottica distributor An international benchmark for Ray-Ban and Oakley replacement parts Over 600,000 glasses restored in 50+ countries New High-precision custom engraving on your lenses 3-year warranty on all replacement parts Compatible Quality and savings to renew your glasses

All Ray-Ban replacement lenses →All original Ray-Ban lenses →

Ray-Ban · Alex

Original Ray-Ban RB4201 Alex lenses

Bring your Alex back to life with a pair of original Ray-Ban lenses, made for the RB4201 model and bearing the original logo.

Complete pair Polycarbonate Original logo
$ 59.07 price per pair
Select the lens size59 mm
Choose the color and coating8G · Gray gradient · plastic

Material: Polycarbonate

Optional
Your configurationOriginal lenses RB4201
$ 59.07 per pair
Model
Ray-Ban RB4201 Alex
Material
Polycarbonate
Product
Original pair · with Ray-Ban logo
Choose the options to see availability
Quantity: 1 Total $ 59.07
Check the model. This pair is only for the Ray-Ban RB4201.
Before you choose

Find the right lens size for your RB4201

The inscription on the inside of the arm lets you confirm the model and exact lens measurement without visually comparing frames.

Inscription on the inside of the arm: RB4201 ··· 59□·· ···Example for guidance only. The position and order of the codes may vary depending on the frame.

How to read the inscription

In an inscription such as RB4201 ··· 59□·· ···, each part has a purpose:

RB4201ModelMust match this product.
···Frame colorIdentifies the finish of the frame front.
59Lens sizeThis is the size you need to select.
··BridgeThis is not the lens size.
Quick rule: the lens size is the number right before the □ symbol. If you read 59□··, select 59 mm.
Product and model

Ray-Ban RB4201 Alex

Frame material of the RB4201: Nylon. This pair of original lenses keeps the shape, thickness, beveling and fit designed for this frame; you just need to confirm that the reference and lens size match.

Reference
RB4201
Name
Alex
Available lens sizes
59 mm
Identification
Original logo
MaterialPolycarbonate
CurvatureBase 6
Packaging1 pair
ManufacturingOriginal Ray-Ban
Product contents

What you'll receive with your order

1Original right lens with Ray-Ban logo
2Original left lens with RB engraving
3Selected color, coating and lens size
CristalesRepuesto technician checking a lens in the Granada workshop
Specialists since 2018Original product with specialist support
Why choose ReplacementLenses

Origin, compatibility and contents explained before you buy

We work with original replacement parts and help you confirm the model and lens size to reduce mistakes before we prepare your order.

EssilorLuxottica Ray-Ban Certified distributor
since 2018
Certified distributor

ReplacementLenses has been a certified EssilorLuxottica distributor since 2018.

Verifiable original

Ray-Ban pair with the original markings for the variant.

Guided compatibility

We explain where to find RB4201 and how to tell the 59 mm lens sizes apart.

3-year warranty

Coverage against manufacturing defects and after-sales support.

Installation guide

How to replace the lenses on your RB4201

This model has a dedicated guide: follow the method shown in the video for your frame.

Guide specific to the RB4201Step-by-step installation
ReplacementLenses · YouTube
More information

Everything about this replacement part for the Ray-Ban RB4201

Original Ray-Ban RB4201 replacement lenses

Bring your Ray-Ban RB4201 sunglasses back to clear vision without buying a complete new frame. These original Ray-Ban replacement lenses are a smart way to renew your sunglasses for less, with free shipping on qualifying orders and the support of a specialist optical workshop.

At ReplacementLenses.net we handle Ray-Ban lenses every day in our own workshop in Granada. We are an official EssilorLuxottica distributor, and qualified opticians check every lens with a lensmeter before dispatch.

Model compatibility

These lenses are made for the Ray-Ban RB4201 model in size 59. They are designed to fit the original Ray-Ban frame for this exact model, respecting the lens shape, Base 6 curve and factory look.

Do not use them for other Ray-Ban models that only look similar. Even small differences in shape or curvature can prevent a secure and accurate fit.

How to identify your model and size

Check the inside of the temple arm. On an original Ray-Ban frame you should find the model reference, usually shown as RB4201, followed by sizing information. For this replacement, the key details are RB4201 and lens size 59.

If the print on your temple has worn off, compare the lens shape carefully and verify any remaining frame markings before ordering. A correct model match is essential for a safe installation.

Main features

  • Brand: Ray-Ban
  • Compatible model: RB4201
  • Size: 59
  • Product type: original
  • Lens material: polycarbonate
  • Lens curve: Base 6
  • Use: sunglasses
  • Audience: adult
  • Associated frame temples: metal
  • UV400 protection: blocks 100% UVA/UVB

Available colours

  • 13 – brown gradient – plastic
  • 8G – grey gradient – plastic

Choose the lens colour that matches your original sunglasses to keep the same Ray-Ban RB4201 style. Both gradient lens options are ideal for everyday sun use and a refined look.

Material, protection and lens finishes

These lenses are made from polycarbonate, a lightweight and resistant material widely used in sunglasses. The Base 6 curvature helps maintain the correct optical geometry for the RB4201 frame.

UV400 protection blocks 100% of UVA and UVB rays. This is especially important when replacing sunglass lenses: a dark tint alone does not guarantee real eye protection unless the lens is properly certified.

Why replace only the lenses

If your frame is still comfortable, replacing only the lenses is the most efficient way to restore your sunglasses. You can save money compared with buying a complete new pair, while keeping the frame that already fits your face.

It is also a more sustainable choice. With more than 600,000 glasses repaired, over 400,000 orders and customers in 50+ countries since 2018, we know that a new set of original lenses can make your favourite sunglasses feel new again.

Authenticity and logo

As original Ray-Ban lenses, they include the Ray-Ban logo used on genuine products. Buying original Ray-Ban lenses helps ensure proper fit, UV protection and optical quality.

We are an official EssilorLuxottica distributor. Our opticians inspect each lens with a lensmeter before shipping, so your replacement reaches you ready for a precise installation.

Frequently asked questions

Are these lenses compatible with any Ray-Ban RB4201?
They are intended for Ray-Ban RB4201 in size 59. If your frame is a different model, even a similar-looking one, the lens shape may not fit correctly.

Can I use them in other Ray-Ban frames?
No. Ray-Ban models can look close in photos, but the lens cut and curve are model-specific.

How do I know my size is 59?
Look inside the temple arm for the model and size markings. If your frame shows RB4201 and size 59, this is the correct replacement.

Can I install them myself?
If you have experience, you may install them carefully. For plastic-type frames, gentle heat can help, but if the lens does not seat easily, stop and visit an optician.

Are they genuine Ray-Ban lenses?
Yes. This is an original Ray-Ban product and includes the Ray-Ban logo corresponding to genuine lenses.

Do they protect against UV?
Yes. These sunglass lenses provide UV400 protection, blocking 100% of UVA and UVB rays.

Are they polarised?
Only choose a variant marked as polarised when that option is available. The lens options listed here are 13 brown gradient and 8G grey gradient.

Ray-Ban 4201 Alex Original Lenses | Official Replacement
Real experiences

Reviews of these lenses

Ratings posted by customers for the Ray-Ban RB4201 Alex. We show the most recent ones.

5.00 out of 5 Based on 1 rating
5 stars1
4 stars0
3 stars0
2 stars0
1 star0
Lidia Vallejo

“Buena experiencia lentes ALEX”

Published review
We answer your questions

FAQ

Is the price for one lens or for the pair?

The price is for a complete pair: original Ray-Ban right and left lenses.

Can I choose a different color from the original?

Yes. You can choose another available variant as long as you select the RB4201 model and the exact lens size of your frame.

Do the polarized versions have a logo?

Yes. On polarized variants, the marking may appear as Ray-Ban P, in addition to the discreet RB engraving.

Will they fit another similar model?

No. Shape doesn't determine compatibility: these lenses are only for reference RB4201 and the lens size you choose.

Search by reference

Find your glasses' reference

Look on the inside of one of the temple arms. That's where you'll find the details needed to find the right replacement part.

Inside of a Ray-Ban temple arm showing reference RB2140, color 901, lens size 50, bridge 22 and arm length 150
RB2140Frame model
901Color code
50Lens size
22Bridge width
150Arm length
●

To find lenses: the model and lens size are usually enough. For arms: we also recommend checking the color and length.