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The Jumbocaster Bobbin Kit

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  • Custom Jumbocaster Bobbin
  • Jumbocaster Hardware Kit
  • Jumbocaster Pickup Product Box with Custom Foam Inserts
  • Age Polepieces
  • Engraving
Tone Kraft
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Calculated at checkout

 Product Description

This kit includes 1 complete Tone Kraft "Jumbocaster" Stratocaster® Style Pickup Bobbin including all hardware. this bobbin is pre-assembled and ready for winding. (Magnet wire is NOT included in this kit, and must be purchased separately).

Because of the over-sized 0.250 in diameter rod magnets the winding area (flatwork) has been increased to allow for necessary turns. For this reason the pickup bobbin does not use a cover. The pickup winding will require either cloth tape (not included in this kit), or use the 8 ply cotton string (provided with kit) to protect the winding from the pickguard (same idea as the cotton string used to protect the bridge pickup in the Telecaster®). These bobbins will fit on any American Standard/Deluxe or Vintage Stratocaster® style guitar.

Turn your standard Stratocaster® style guitar into a Jumbocaster with these oversized polepiece magnets. Enjoy twice the power with 0.250 in diameter Alnico 5 rod magnets, this is truly a high-output pickup bobbin with flush or staggered pole option. No modifications to your pickguard or guitar are required.  


Each Jumbocaster style bobbin includes: 

  • Black vulcanized fiber work (black bottom flatwork 0.093", black top flatwork 0.062")
  • Eyelets made specifically for soldering (eyelet lip is on bottom side only providing smooth, snag-free winding)
  • Jumbo 0.250" Alnico 5 sand cast vintage beveled polepiece magnets 
  • Flush Pole Option:        E: 0.671  A: 0.671  D: 0.671  G: 0.671  B: 0.671  e: 0.671
  • Staggered Pole Option: E: 0.671  A: 0.671  D: 0.710  G: 0.710  B: 0.630  e: 0.650
  • Pickup height tension (your choice of conical spring or rubber tubing, rubber tubing recommended)
  • Pickup height adjustment screws (your choice of black oxide, chrome, gold or nickel)
  • Cloth style push-back wire
  • Holes for pickup tension screws come pre-tapped to accept a standard 6-32 thread
  • (8) ft 8 ply white cotton string
  • Optional product box with custom foam inserts


  • Engraving  Add a real professional touch to your pickups by engraving. Have your logo or custom text engraved on each bobbin (requires art work or font file to be used). Click Here for more details. 
  • Polepiece Aging   Give your pickups that real vintage vibe and add polepiece aging.  note: magnet aging is strictly cosmetic, no heating or other methods are used.  



Bulk Pricing:

  • Buy 5-9 sets and get 5% off
  • Buy 10 or more sets and get 10% off






(The term “Stratocaster”® is a registered trademark of Fender Musical Instruments Incorporated. Tone Kraft is in no way affiliated with Fender Musical Instruments.)

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