Boss Audio 4" MR4.3B Box Speakers - Black - 200W [MR4.3B] Boat Outfitting | Trim Tabs The Straight shaft drive unit

The Straight shaft drive unit replaces the manual drive used on cable steered boats and is mounted directly behind the dash

Add one of the optional controllers and produce multiple colors

Sea Shelter2 and Sea Shelter3 brackets

AIS Class: Both A & B

Stud dimensions: 3/8" x 3/4"

Boss Audio 4" MR4.3B Box Speakers - Black - 200W [MR4.3B] Boat Outfitting | Trim Tabs The Straight shaft drive unit4" MR4. 3B Box Speakers White 200W Whether you are at a boat party or spending a day out on the lake, you can enjoy the premium quality sound of the BOSS Audio 3 Way Marine Enclosed Speaker System. This enclosed marine speaker system features a tweeter and 1. 5" polypropylene cone. Swivel brackets are included for a smooth, simple installation process. The versatile speakers can also be installed indoors or on the patio, giving you plenty of options