ECOTRIC Behind Seat Speaker Brackets 6x9

This rear speaker bracket kit from ECOTRIC lets you mount 6x9 speakers behind the seat of classic square-body Chevy and GMC C10 pickups to improve cabin sound staging and bass projection. It is intended to fit single or crew cab models from the mid 1970s through 1987 and provides a sturdy steel anchoring point so the sound travels along the seat sides rather than being absorbed by upholstery.

Key Points

Made of high-quality steel with an oil-based anti-rust finish, these brackets are built to withstand the conditions inside a truck cab and hold standard 6 x 9 speakers securely. The design aims to be a direct-fit replacement for the rear corner mounting location on 1973–1987 Chevy/GMC C10 single cab and crew cab models, avoiding cutting in most installations. According to the manufacturer, the package includes two brackets in black steel for left and right positions.

Technical Specifications

• Name: ECOTRIC Behind Seat Speaker Brackets Compatible with 1973-1987 Chevy/GMC C10
• Material: High-quality steel
• Finish: Oil anti-rust coating
• Speaker compatibility: 6 x 9 speakers
• Quantity: 2 pieces

Practical Tips

Installation is designed to be straightforward with bolt-on points and a press-fit style for many trucks, however professional installation is recommended if you are not experienced with vehicle audio mounts. Consider testing speaker orientation and wiring routes before final tightening to ensure clean cable runs and minimal vibration noise. Note that manufacturer instructions are not included, and small variations in vehicle interiors over the years may require minor adjustments.

Advantages

The brackets increase usable sound inside the cab by moving speakers out of the cavity behind the seat and into a position that projects toward occupants, which can result in clearer midrange and better perceived bass. They are a simple way to upgrade factory audio without major modification, and the steel construction adds durability for long-term use. One limitation to consider is that some aftermarket speaker grilles or deeper basket designs may need verification for fit before purchase.