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  • 4" Foam Surround - OD:97MM ID:64MM
  • Optimus 4" Foam Repair Kit – image 3
  • 4" Foam Surround - OD:97MM ID:64MM – image 3
  • 4" Foam Surround - OD:97MM ID:64MM – image 4
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4" Foam Surround - OD:97MM ID:64MM

4" Foam Surround - OD:97MM ID:64MM

£4.95 GBP
£4.95 GBP
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Options

100% Fit Guarantee

Wrong size or doesn't fit? We'll cover the return — pick a full refund or a free replacement in the correct size, on us.

Will it fit my speaker?

  • OD 97 mm
  • ID 64 mm
  • Foam
  • 4" driver

You need this if: the foam ring is crumbling, cracked or missing, the bass sounds weak or "farty", or the cone rattles at volume.

Step-by-step repair video →Doesn't fit? measure your OD & ID and use the Surround Finder.

Fit questions

My model isn't listed. Will it still fit?

Measure the outer diameter (OD) and inner diameter (ID) of your old surround and compare them with the measurements on this page. If you are unsure, contact us with your measurements and speaker model and we will confirm the fit before you order.

Can I use rubber instead of foam (or foam instead of rubber)?

We recommend matching the material of your original surround. Foam and rubber differ in weight and stiffness, which changes how the woofer moves and how the bass sounds.

Technical Specifications & Sizing

Measurement Type Dimension
Model 4F#1
Outer Diameter (A) 97mm
Roll Outer Diameter (B) 88mm
Cone Diameter (C) 72mm
Inner Diameter (D) 64mm
Gauge 0.1mm
Edge Type Flat Edge

Purchase Options & Package Contents

Option 1: Surround Only

Ideal if you already have your own adhesive and repair tools.

  • 1x Premium Foam Surround

Option 2: Full Repair Kit

Includes everything required for a professional, seamless installation.

Included Item Quantity
Premium Foam Surrounds 2x
T7000 High-Grade Glue 1x
Precision Applicator Brush 1x
Detailed Paper Instructions 1x

Speaker Compatibility & Fitment Guide

This premium 4-inch foam surround repair kit (Model 4F#1) is engineered to restore the precise mid-range clarity, vocal articulation, and flexibility of smaller audio drivers. It is an excellent choice for breathing new life into vintage or modern compact bookshelf speakers, multimedia desktop monitors, surround sound satellite speakers, and small center channels.

Because this is a universal sizing kit, please ensure you carefully measure your existing speaker cone and basket edge against our technical specification table above before purchasing.

💬 If you are unsure whether this kit fits your specific speaker, drop us a message with your make and model and we'll gladly check it for you!

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Anonymous

Super fast delivery and thank you very much!