Martin Authentic SP 80/20 Bronze Acoustic Guitar Strings

zZounds Gear Experts Say...
With high tensile strength core wire and tin plating for added corrosion resistance, these Martin Authentic strings will provide consistently true tone.

These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin starts with the highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance; because what you don't see matters! When coupled with the highest quality wrap wire you get consistent true tone that you can count on song after song.

Get an overview of Martin Authentic Acoustic strings:


Martin Authentic SP 80/20 Bronze Acoustic Guitar Strings offer excellent tuning stability, corrosion resistance and great playability.
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.

Extra Light 6-String
- Gauge: 10-14-23-30-39-47

Custom Light 6-String
- Gauge: 11-15-23-32-42-52

Light 6-String
- Gauge: 12-16-25-32-42-54

Medium 6-String
- Gauge: 13-17-26-35-45-56

Bluegrass 6-String
- Gauge: 13-17-26-36-46-56

Dimensions and Weight in Packaging

Bluegrass, MA240

  • Shipping Weight: 0.09 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA240

Custom Light, MA175

  • Shipping Weight: 0.08 lbs
  • Shipping Dimensions: 5 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA175

Extra Light, MA170

  • Shipping Weight: 0.08 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA170

Light, MA140

  • Shipping Weight: 0.09 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA140

Medium, MA150

  • Shipping Weight: 0.25 lbs
  • Shipping Dimensions: 6 x 5 x 1 in
  • Manufacturer Part Number (MPN): 41Y18MA150

3-Pack, Custom Light, MA175

  • Shipping Weight: 0.24 lbs
  • Shipping Dimensions: 7 x 5 x 2 in
  • Manufacturer Part Number (MPN): 41Y18MA175PK3

3-Pack, Extra Light, MA170

  • Shipping Weight: 0.22 lbs
  • Shipping Dimensions: 6 x 5 x 2 in
  • Manufacturer Part Number (MPN): 41Y18MA170PK3

3-Pack, Light, MA140

  • Shipping Weight: 0.25 lbs
  • Shipping Dimensions: 6 x 5 x 2 in
  • Manufacturer Part Number (MPN): 41Y18MA140PK3

3-Pack, Medium, MA150

  • Shipping Weight: 0.27 lbs
  • Shipping Dimensions: 6 x 5 x 2 in
  • Manufacturer Part Number (MPN): 41Y18MA150PK3

For support or warranty questions, please contact the manufacturer:
Phone: 610-759-2837
Web: https://www.martinguitar.com/contact-us

Martin Authentic SP 80/20

These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin starts with the highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance; because what you don't see matters! When coupled with the highest quality wrap wire you get consistent true tone that you can count on song after song.

Martin Authentic SP 80/20 Bronze Acoustic Guitar Strings offer excellent tuning stability, corrosion resistance and great playability.

3-Pack, Custom Light, MA175

$20.99
FREE -Day Shipping!
Get it for 
Get it (or get it with an order of ), if you order within
Shipping to