D'Addario NYXLB045 Bass guitar strings

Replacement Bass String for Long-Scale Basses

The D'Addario NYXLB045 is a single .045" nickel-wound bass guitar string designed as a replacement or for building custom sets. It belongs to the NYXL bass string family, which uses a reformulated nickel-plated steel wrap wire over a high-carbon NY Steel hex core. The result is a string with a familiar feel and accentuated harmonics, plus the tuning stability and break resistance the NYXL line is known for. The .045" gauge fits the A-string position on a standard long-scale 4-string bass or the D-string slot on a 5-string setup, and the string is built to fit basses with a scale length of up to 36 1/4" (921 mm). Made in the USA at D'Addario's New York production facility, this single string is uncoated and sold individually.

Technical Specifications

• Number of Strings: 1 (single replacement string)
• Gauge: .045" / 1.14 mm
• Wrap Material: Reformulated Nickel-Plated Steel
• Construction: Round Wound
• Core: NY Steel Hex Core
• Coating: Uncoated
• Scale Length Compatibility: Long Scale, fits basses up to 36 1/4" (921 mm)
• Compatible With: 4-String, 5-String, and 6-String Bass Guitars

Who This String Is For

The NYXLB045 is the right choice for bass players who need a reliable replacement .045" string for a long-scale bass without buying a full set. It suits rock, pop, funk, and metal players who want the bright, punchy character of round-wound nickel-plated steel with extra tuning stability for aggressive playing styles. Bassists building custom gauge sets — for example, mixing NYXL strings with other D'Addario bass lines — will appreciate the single-string format. The NY Steel hex core also makes this a practical option for players who break strings frequently and want a more durable replacement. Because it fits basses with scale lengths up to 36 1/4" (921 mm), it works with most standard long-scale 4-, 5-, and 6-string electric basses on the market.