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Optimus 4" Foam Speaker Repair Kit FSK-4 (PAIR)

Part Number:RSO-FSK-4
Optimus 4" Foam Speaker Repair Kit FSK-4 (PAIR)
Optimus Repair Kit # FSK-4
Optimus 4" Foam Speaker Repair Kit FSK-4 (PAIR)
Your Price:$24.95
List Price:$34.95
You Save:$10.00


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Foam Guard Sealer?
Optimus 4" Speaker Foam Repair New-Edge-It ® Kit, Part # FSK-4

Optimus Speaker Foam Edge Repair Kit
Outer diameter:
3-7/8" (98mm)
Roll outer diameter:
3-1/2" (89mm)
Cone diameter:
2-7/8" (73mm)
Inner diameter:
2-1/2" (64mm)
Foam roll width:
1/4" (6mm)
Variances up to 1/8" (3mm) from your speaker measurements are OK.
  • Optimus 4" angle attach woofer foam repair kit. New-Edge-It ® part # FSK-4
  • Original Optimus woofer design
  • Fits all 4" frame models with 2-7/8" cone
  • Fits Optimus and Radio Shack cabinet and driver models:

    Optimus and Radio Shack 1255, Optimus Pro CS3, Pro 7AV, and many more!

    Please check the model and size of your speakers before ordering to be sure you receive the correct foam edge repair kit.

  • Speaker New-Edge-It ® foam repair kits include:
  • Two new formula polyether foam rubber surrounds. These last much longer than the original foam.
  • Special CLEAR speaker repair adhesive part # MI-3035. The same adhesive we use for our repairs.
  • We do NOT use generic glue or Elmers type white glue like others sell.
  • Easy to follow illustrated instructions. Installation average time is 30 minutes per speaker.
  • You do not need to remove the dust caps to install these kits perfectly - every time.
  • See online installation instructions here: Speaker Refoam Instructions
  • FREE technical support. FREE shipping to any USA address.
  • Join over 150,000 customers that have used our New-Edge-It ® speaker foam repair kits successfully!
5 Stars
Love Foam Speaker Repair Kit
Fast shipping. Exact fit with understandable instructions. Exactly what I was looking for. Saved me tons of money so that I don't have to buy new speakers. Thank you!
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Reviewed by:  from NJ. on 6/22/2016
5 Stars
Good fit, easily installed, works great.
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Reviewed by:  from Va.. on 6/19/2016
5 Stars
Retired Production Mgr.
Parts fit great. You Tube instruction made the job easy. You guys rock!
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Reviewed by:  from Rutland, Ma. 01543. on 8/23/2015
5 Stars
1st Duke of Peckens
Unfortunately this item was the wrong size my bad so I put it into inventory, however I must say that the other orders worked out well, These re-foaming kits are the best as are the other products. I can say that I will use Simply Speakers as a resource in the future.
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Reviewed by:  from Honor, Mi. on 12/4/2014
3 Stars
Optimus 4" Speaker repair kit
Very nice kit to repair speaker surrounds. In my opinion one thing could improve this kit would be to include new gaskets. The original gasket are flimsy and easily damaged during removal. I think this would be an improvement in small speaker repair kits. The glue works extremely well, although dispensing a lesser amount would be an improvement. I found that usuing a little on the speaker cone and a little on the new surround letting it set for a few minutes worked well prior to attaching together.
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Reviewed by:  from Allentown, PA. on 11/20/2014



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