
Backun Fatboy A/Bb Clarinet Barrel Overview
The Backun Fatboy A/Bb Clarinet Barrel in Cocobolo is a 66mm standard-fit clarinet barrel designed to provide a flexible, versatile response for players who perform across multiple styles and venues. Known as Backun Barrel in Japan, the Fatboy is Backun’s best-selling barrel and is commonly chosen by clarinetists who need reliable intonation and a consistent feel when moving between orchestral, chamber, and jazz settings.
Backun Fatboy A/Bb Clarinet Barrel Specifications
- Instrument: A/Bb clarinet barrel
- Length: 66mm
- Material: Cocobolo
- Fit: Standard fit
- Compatibility (standard fit pairs with): Backun, Buffet, Yamaha, Leblanc, Selmer USA (Centered Tone, 10G, Series 9)
- Finish: Natural wood
- Velvet bag; barrel tube
Condition & Setup
Brand new.
Who the Fatboy Clarinet Barrel Is For
The Fatboy clarinet barrel is a 66mm Cocobolo barrel for A and Bb clarinets that is designed for players who want one barrel that can adapt to a wide range of musical demands. It is particularly well-suited to working professionals, serious students, and doubling artists who need a stable, familiar setup across orchestral repertoire, chamber music, and commercial or jazz work.
What distinguishes the Fatboy within Backun’s barrel lineup is its emphasis on flexibility and versatility rather than a single specialized feel. If you play in varied acoustic environments, switch frequently between styles, or need a dependable standard-fit option for common clarinet makes, the Fatboy is a practical upgrade path without changing the core character of your instrument.
Common Questions About The Backun Fatboy
What clarinets does the Backun Fatboy 66mm Standard Fit barrel fit?
The standard fit is intended to pair with Backun, Buffet, Yamaha, Leblanc, and Selmer USA clarinets, including Selmer USA Centered Tone, 10G, and Series 9 models.
Is the Backun Fatboy barrel suitable for professional use?
Yes. The Fatboy is widely used by players who perform in varied settings and need a flexible barrel that supports changing repertoire demands, from concert hall work to jazz and commercial playing.
What is included with this Backun Fatboy barrel?
This listing includes one 66mm Cocobolo barrel, one velvet bag, and one barrel tube.
We are proud to be an authorized Backun dealer
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
Backun Fatboy A/Bb Clarinet Barrel, Cocobolo, 66mm, Standard Fit
Backun Fatboy A/Bb Clarinet Barrel Overview
The Backun Fatboy A/Bb Clarinet Barrel in Cocobolo is a 66mm standard-fit clarinet barrel designed to provide a flexible, versatile response for players who perform across multiple styles and venues. Known as Backun Barrel in Japan, the Fatboy is Backun’s best-selling barrel and is commonly chosen by clarinetists who need reliable intonation and a consistent feel when moving between orchestral, chamber, and jazz settings.
Backun Fatboy A/Bb Clarinet Barrel Specifications
- Instrument: A/Bb clarinet barrel
- Length: 66mm
- Material: Cocobolo
- Fit: Standard fit
- Compatibility (standard fit pairs with): Backun, Buffet, Yamaha, Leblanc, Selmer USA (Centered Tone, 10G, Series 9)
- Finish: Natural wood
- Velvet bag; barrel tube
Condition & Setup
Brand new.
Who the Fatboy Clarinet Barrel Is For
The Fatboy clarinet barrel is a 66mm Cocobolo barrel for A and Bb clarinets that is designed for players who want one barrel that can adapt to a wide range of musical demands. It is particularly well-suited to working professionals, serious students, and doubling artists who need a stable, familiar setup across orchestral repertoire, chamber music, and commercial or jazz work.
What distinguishes the Fatboy within Backun’s barrel lineup is its emphasis on flexibility and versatility rather than a single specialized feel. If you play in varied acoustic environments, switch frequently between styles, or need a dependable standard-fit option for common clarinet makes, the Fatboy is a practical upgrade path without changing the core character of your instrument.
Common Questions About The Backun Fatboy
What clarinets does the Backun Fatboy 66mm Standard Fit barrel fit?
The standard fit is intended to pair with Backun, Buffet, Yamaha, Leblanc, and Selmer USA clarinets, including Selmer USA Centered Tone, 10G, and Series 9 models.
Is the Backun Fatboy barrel suitable for professional use?
Yes. The Fatboy is widely used by players who perform in varied settings and need a flexible barrel that supports changing repertoire demands, from concert hall work to jazz and commercial playing.
What is included with this Backun Fatboy barrel?
This listing includes one 66mm Cocobolo barrel, one velvet bag, and one barrel tube.
We are proud to be an authorized Backun dealer
Pairs well with
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99

Backun Fatboy A/Bb Clarinet Barrel, Cocobolo, 66mm, Standard Fit
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders valued over $99 ship via FedEx 2-Day within the U.S. and via DHL internationally. A physical address (no P.O. Boxes) and signature are required. Smaller accessories ship via USPS (2–5 day service) and do not require a signature if valued under $99. Please see our FAQ for additional details.
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Return Policy
We offer an unconditional 30-day return policy to ensure you’re completely satisfied. If you’re unhappy for any reason, return the item for a full refund or full exchange credit (reeds and other consumables are non-returnable once opened). Every instrument we sell is guaranteed to be free of mechanical defects—if an issue arises, contact us and we’ll either reimburse a local repair or provide a prepaid return label for repair, exchange, or refund. If you simply change your mind, you may still return the item for a full refund, but return shipping costs are the customer’s responsibility unless free returns were purchased through Redo at checkout. Please see our FAQ for additional details.
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Shop Warranty:
Brand new items are covered by the full manufacturer’s warranty unless otherwise noted (see the individual maker for details). Open box, used, and vintage items include a two-year warranty serviced by our in-house repair shop, and we guarantee every instrument will be free of mechanical defects. Warranty coverage does not include damage from accident, misuse, negligence, improper operation, unauthorized alterations or removed serial numbers, normal wear and routine maintenance, environmental damage (including perspiration, corrosion, or extreme temperature and humidity), lacquer or plating wear, or consumable parts such as springs, pads, and felts. Please see our FAQ for additional details.

