Bass Ukulele Strings – UBass & Ashbory Bass – Aquila Thunderblack – 4 Strings – 18-21″ Scale – New Formula – 140U 1 zoom


Bass Ukulele Strings – UBass & Ashbory Bass – Aquila Thunderblack – 4 Strings – 18-21″ Scale – New Formula – 140U 1
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Aquila Thunderblack – Bass Ukulele Strings – UBass & Ashbory Bass – 4 Strings – 18-21″ Scale – New Formula – 140U


  • New Aquila Thunderblack Bass Ukulele Strings – Code 140U
  • New Formula – For UBass & Ashbory Bass
  • Suitable for 18 to 21 Inch Scales
  • Pack Includes Four Bass Ukulele Strings
  • Made in Italy
  • Superior Performance – Stable Intonation – Quicker Tuning

In Stock | FREE UK Priority Shipping | Fast Dispatch & Delivery


Aquila Thunderblack Strings – 140U

New Formula for Improved Performance.

Aquila’s new Thunderblack bass ukulele strings have been developed from specially formulated compounds, allowing for better sound, increased stability and more accurate intonation for your bass uke.

Thunderblack bass ukulele strings are created with 3 different types of synthetic elastomer. The density of the elastomeric material in strings 3 and 4 of each Thunderblack set is increased by adding micronized metal iron powder during the extrusion process.

This advanced technological solution allows for smaller diameters operating at the same working tension, whilst providing greater volume and sustain than other polyurethane and silicone rubber strings on the market.

Thunder black strings ensure fast and stable intonation for your bass ukulele while the properties of the metallic powder included in the composition help to provide a beautiful feel with a slipperiness that helps glide the fingers across the strings.

The Aquila Thunderblack 140U set is for 4 string bass ukuleles of 18 to 21″ scales.

Pack Contains 4 Bass Ukulele Strings – G, D, A, E

1st – G
2nd – D
3rd – A
4th – E

Please Note – These strings have been designed specifically for the UBass and Ashbory basses of 18 to 21 inch scale and are not to be used on longer scales.

Additional information

Weight 68 g
Dimensions 15 × 15 × 1.6 cm






Range / Series


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Tuning - Last String to First

Tuning - First String to Last


No of Strings

Pack Type

Anchor / End

Coated / Uncoated

Other Stringed Instruments


Dispatch, Delivery & Returns

At Original Artisan, we take great care ensuring the goods you purchase on this site reach you in good condition and as quickly as possible.

Our aim is to provide the best service we possibly can for all our customers which is why we provide FREE priority shipping on all UK Mainland orders, fast dispatch and delivery and 100% satisfaction moneyback guarantees.

Please view our shipping information pages and guarantee & returns pages for further details.

UK Mainland Shipping – FAST & FREE

Smaller Items – Strings & Musical Accessories

  • FREE Royal Mail 1st Class & RM24 shipping for all UK orders
  • Same day dispatch on orders received before 4.30pm Monday to Friday & 11.30pm Saturday
  • Royal Mail aim to deliver most 1st Class & RM24 letters & parcels within 1 – 2 working days
  • Royal Mail Special Delivery Service available at checkout

Larger Items – Amps, Guitars & Ukuleles

  • FREE Express Courier shipping via UPS, DPD & Parcel Force
  • Same day dispatch on orders received before 12pm requiring courier delivery
  • Most couriers aim to deliver the next working day after posting or within 1 to 2 working days for certain services

Please note that at times of year where excessive strain is placed on delivery services such as Christmas, New Year, bank holidays and periods whereby unforeseen weather conditions or restrictions arise due to Coronavirus concerns, delivery times can vary.

Scottish Highlands, UK Islands, Channel Islands, Northern Ireland & Remote Areas

Free Royal Mail 1st Class & RM24 shipping is available for most smaller items, strings & musical accessories
Charges are applicable for larger items, amps, guitars and larger sized ukuleles.
Please view our shipping information pages and guarantee & returns pages for details.

International Shipping

Coronavirus Notice

Unfortunately due to the coronavirus pandemic, international shipping has been temporarily suspended. We hope to be resuming our international shipments as soon as possible but at the moment we are only processing UK orders. Please see our shipping page for exceptions.


All items are sent with adequate postage insurance.

Customer Guarantees & Returns

Original Artisan operates a fair and open returns policy.

If for any reason the buyer is dissatisfied with the product, then the item may be returned within 14 days of receipt for a full refund, provided the product is returned unused and in it’s original packaging and condition.

If you need to return your item for any reason, please contact us either by phone, email or using our contact form and we will be happy to assist and discuss options to help resolve your issue or instigate your return as quickly as possible.

Please see our guarantee and returns page for more details.

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