4" Foam Repair Kit - OD:100MM ID:60MM
4" Foam Repair Kit - OD:100MM ID:60MM
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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 100 mm
- ID 60 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
Do I get one surround or a pair?
A pair. This kit has 2 surrounds, enough to repair both speakers.
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) | 100mm |
| Roll Outer Diameter (B) | 88mm |
| Cone Diameter (C) | 68mm |
| Inner Diameter (D) | 60mm |
| Gauge | 0.1mm |
| Edge Type | Flat Edge |
Repair Kit Contents
| 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!
Guides
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How to Repair Speaker Surrounds: Step-by-Step V...
Welcome to the North Speaker Parts definitive guide to DIY speaker restoration. Whether your vintage hi-fi foam has rotted away or your rubber surrounds have split, you can bring your...
How to Repair Speaker Surrounds: Step-by-Step V...
Welcome to the North Speaker Parts definitive guide to DIY speaker restoration. Whether your vintage hi-fi foam has rotted away or your rubber surrounds have split, you can bring your...
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Speaker Repair FAQ, Tips & Sizing Guide
General Questions I am not sure if a repair kit fits my speaker. What should I do? STOP! Please contact North Speaker Parts right away before applying any adhesive. If...
Speaker Repair FAQ, Tips & Sizing Guide
General Questions I am not sure if a repair kit fits my speaker. What should I do? STOP! Please contact North Speaker Parts right away before applying any adhesive. If...
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How to Measure a Speaker for New Foam or Rubber...
Don’t let rotted foam or cracked rubber ruin a perfectly good pair of vintage speakers. Repairing them yourself at home is easier than you think, but there is one crucial...
How to Measure a Speaker for New Foam or Rubber...
Don’t let rotted foam or cracked rubber ruin a perfectly good pair of vintage speakers. Repairing them yourself at home is easier than you think, but there is one crucial...
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