Specification AutomotiveFitType : universal_fit Brand : TRAILER SUPPLIES BulletPoint : 5pcs/lot 2 Row Toggle DIP Switch 2 3 4 5 6 8 Pin P 2.54mm Pitch Position Way DIP Red Blue Snap Switch BulletPoint1 : 【Heavy-Duty Electric Trailer Brake Kit】 Complete trailer brake kit for 9K–10K axles, includes 2 left and 2 right 12.25" x 3.375" electric drum brake assemblies. Designed to fit general duty trailer axles with a 7-hole brake flange. Designed for house trailer axles with 9K–10K capacities, ensuring optimal safety and reliability. BulletPoint2 : 【Self-Adjusting Mechanism】 No more manual adjustments needed. Self-adjusting function automatically maintains proper shoe-to-drum clearance for consistent, reliable braking performance. BulletPoint3 : 【Fully Assembled & Easy Installation】 Our 8 lug trailer brake kit comes fully assembled with pre-installed components, included shoes, springs, magnets, and backing plates — ready to bolt on with no extra setup. Just attach to your trailer's 7-bolt flange and wire into your system. BulletPoint4 : 【Compatible with Dexter 9K–10K Axles】 Direct replacement for Dexter part numbers K23-450-00 (LH) and K23-451-00 (RH). Commonly used on utility trailers, livestock trailers, dump trailers, and more. BulletPoint5 : 【Durable, Smooth & Safe Braking】 Heat-resistant friction material delivers smooth, quiet stops without jerking. Designed for trailers with 16"–17.5" wheels. Backed by a 2-Year Limited Manufacturer Warranty. Color : Red CompatibilityOptions : Compatible with Dexter, TRP, Redneck trailer brake systems; direct cross-reference with OEM part numbers: 023-450-00 / 023451-00, BK-10KE-01 / BK-10KE-02, 23-450 / 23-451. CompatibleWithVehicleType : Trailer ExteriorFinish : Painted ExternallyAssignedProductIdentifier : 7320565301439 IncludedComponents : 2 x Left-Hand Electric Brake Assemblies 2 x Right-Hand Electric Brake Assemblies ItemName : TRAILER SUPPLIES 12.25" x 3.375" Electric Dexter Trailer Brake Kit, Self-Adjusting, 4-Pack (2 Left + 2 Right), Fits 9K–10K Axle, Compatible with Dexter K23-450-00 / K23-451-00 ItemPackageDimensions_Height : 14 inches ItemPackageDimensions_Length : 13 inches ItemPackageDimensions_Width : 13 inches ItemPackageQuantity : 1 ItemTypeKeyword : trailer-brakes Manufacturer : TRAILER SUPPLIES ModelName : WA-77-1210-0102-2PAIRS ModelNumber : WA-77-1210-0102-2PAIRS ModelYear : 2025 NumberOfBoxes : 1 NumberOfItems : 4 OemEquivalentPartNumber : Dexter Part Number K23-450-00(LH) / K23-451-00(RH) Orientation : Dual PartNumber : 77-1210-1/77-1210-2 ProductDescription : Upgrade your trailer’s braking system with this premium Electric Trailer Brake Kit, built for 9,000–10,000 lb axles and trusted in heavy-duty applications. This 4-pack includes two left-hand and two right-hand 12-1/4" x 3-3/8" brake assemblies, compatible with Dexter 9K–10K axles and designed to mount using a 7-hole brake flange. Each assembly comes fully pre-wired and pre-assembled, featuring robust brake shoes, a powerful electromagnet, and a self-adjusting mechanism that automatically keeps the brake pads aligned to the drum for optimum stopping power. No manual adjustment needed — enjoy consistent, safe braking with less maintenance. These brake sets are commonly used on: Utility trailers Car haulers Horse/livestock trailers Dump trailers Gooseneck or flatbed trailers Specifications: Brake Type: Electric, Self-Adjusting Size: 12.25" Diameter x 3.375" Width Mounting: 7-hole brake flange Wheel Size Compatibility: 16"–17.5" OEM Replacement: Dexter K23-450-00 / K23-451-00 Warranty: 2-Year Limited Manufacturer Warranty Note: Mounting hardware not included Choose TRAILER SUPPLIES for quality, performance, and safety on every mile. ProductSiteLaunchDate : 2025-05-15T21:57:15.959Z Size : 5P SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 25170000 WarrantyDescription : 2-Year Limited Warranty. Covers manufacturing defects only. Installation and usage must follow industry guidelines. Buyer is responsible for return shipping for warranty claims.