Universal Fit, Three bolt design, Billet aluminum construction, Fits 91066411 and 91066412 Optima batteries, Precision CNC-machined. Speedway Deluxe Plain Billet Aluminum 3-Bolt Battery Mount, Optima. This deluxe billet aluminum battery mount is just what you need for Optima batteries. Hold down is across the battery. Precision CNC machined for fit and has drain holes to prevent build up of moisture. Choose plain, balck or polished. For Optima batteries: and. If using battery we suggest our mount. Fits 91066411 and 91066412 Optima batteries. Before cutting the uprights shorter for the yellow top battery, be sure to test fit the battery in the battery mount as Optimas battery dimensions may vary slightly. Really high quality polished top to bottom. By Casper on April 14, 2021. Yes, I recommend this product. By None on March 03, 2020. Looks great mounted in trunk a long with my polished fuel cell. By Niko on June 25, 2019. Great product and polished finished!! By Slick on January 13, 2019. Get them out really easy in the trunk of my 95 mustang street car Mount easy in the back of the truck. By No Name on August 05, 2018. Mounted in trunk of car. Related Items / Suggested Parts. Custom Bolt-On Remote Mount Car Battery Relocation Box/Steel Tray. Billet Battery Mounts 2-Bolt. JAZ Products Sealed Plastic Battery Box. Optima Batteries 9004-003 Group 34/78 12V Red Top Battery. Optima Batteries 9014-045 Group 34/78 12V Yellow Top Battery. Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years.