StreetWires BASMS Adapter

Short side-mount battery post adapter

  • StreetWires BASMS Adapter


Crutchfield OMC logo
We don't check this item for fit or compatibility.
Item #: 211BASMS

Review Summary

This item is no longer available to purchase.
Contact us for other options
Call   Email  
Original price $4.99
We recommend this similar item, or shop all Battery Terminals

Our take on the StreetWires BASMS Adapter

by Tim Sprinkle

Replace your vehicle's side-mount battery post with a quality, solid brass post from StreetWires. The BASMS adapter allows you to connect the terminal for your vehicle's electrical components, as well as the ring terminal for your audio components, to the stud on your battery without overcrowding. Overall length: 1.3". Warranty: lifetime.

See more info on this item

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

  • Side mount battery post adapter
  • hex nut
  • split lock washer

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Overview: The Streetwires BASMS battery adapter is designed to attach directly to vehicle batteries with side mount terminals. It allows you to mount a power ring or ring terminal to the battery. The diameter of the top bolt is 0.302".

Materials: This battery adapter is machined from forged brass for maximum current transfer and resistance to harsh environments.

Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

StreetWires BASMS Adapter Reviews

Average Customer Review:

3 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
1 out of 5

StreetWires BASMS Adapter

Written By SHOGOR, NJ on Wednesday, June 16, 2010
Crutchfield Customer Review (What's this?)
Threaded stud is too short, it strips out the battery when you try to tighten it up. Buy the longer one and cut and thread the stud to match the battery.
Was this review helpful?    Yes | No
5 out of 5

The only way to go with a side post battery

Written By Anonymous, NC on Tuesday, June 09, 2009
This is the easiest and best way to tap power from a side post battery for an amp, etc. Very easy to install, and looks professional when you are done.
3 out of 3 people found this helpful
Was this review helpful?    Yes | No
5 out of 5

StreetWires BASMS Adapter

Written By Jared, Coldwater, OH on Thursday, April 23, 2009
Crutchfield Customer Review (What's this?)
If you want a quality side post battery terminal with a professional-looking installation, this adapter gets the job done. Great quality product.
3 out of 3 people found this helpful
Was this review helpful?    Yes | No

For a more in-depth review and enhanced detailed information on the StreetWires BASMS Adapter, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_211BASMS/StreetWires-BASMS-Adapter.html ).