Dexter 12 Inch Disc Brake Assembly K71-G00-43 for G5 Trailer Axles

The Dexter K71-G00-43 is a complete 12 inch disc brake assembly built for G5 trailer axle applications, sold as a single-wheel kit. Each assembly pairs a single piston aluminum caliper with a patented bimetal aluminum and stainless steel piston, riding on oil impregnated bronze bushings and factory pre-installed stainless steel slider pins for smooth, consistent engagement over time. The caliper is fitted with ceramic brake pads backed by stainless steel plates, delivering steady stopping power while resisting the heat and wear that come with repeated trailer braking.

The stainless steel rotor includes venting holes to promote faster cooling during use, reducing brake fade on longer tows. The hub carries a GalvX coating and the mounting bracket is galvanized, giving the assembly corrosion protection suited to trailer environments, including boat ramp exposure. Precision bearings, seals, and grease are factory installed, so the kit arrives ready to mount without additional bearing pack-out. Because this is a G5-caliper assembly, it also serves as an upgrade path for earlier G4 caliper setups, replacing the G4 caliper with the newer G5 caliper and lifetime pads. Each K71-G00-43 kit covers one wheel; a matching kit is required for the opposite wheel position to complete a full axle.

Specifications

• Brand: Dexter
• Manufacturer Part Number: K71-G00-43
• Rotor Diameter: 12 inches
• Caliper Type: Single piston aluminum caliper
• Piston Material: Bimetal aluminum and stainless steel
• Pad Material: Ceramic with stainless steel backing plates
• Bushing Material: Oil impregnated bronze
• Slider Pins: Stainless steel, factory pre-installed
• Hub Finish: GalvX coated
• Mounting Bracket Finish: Galvanized
• Rotor Material: Stainless steel with venting holes
• Bearings and Seals: Precision bearings, seals, and grease factory installed
• Package Quantity: 1 (one wheel)
• Position: Rear
• Weight: 30 pounds
• Package Dimensions: 13.8 x 12.3 x 6.3 inches
• UPC: 081628820928

Frequently Asked Questions

What does the Dexter K71-G00-43 disc brake assembly include? The K71-G00-43 is a complete single-wheel kit that includes a single piston aluminum caliper, a stainless steel rotor with venting holes, ceramic pads with stainless steel backing plates, a GalvX coated hub, and a galvanized mounting bracket. Precision bearings, seals, and grease are factory installed.

Does this kit cover one wheel or both wheels on the axle? Each K71-G00-43 assembly is packaged for one wheel only. A second, matching kit is needed to equip the opposite wheel of the same axle.

What rotor size is used on this assembly? This Dexter disc brake assembly uses a 12 inch stainless steel rotor with venting holes designed to speed up cooling under repeated braking.

What material are the brake pads made from? The K71-G00-43 uses ceramic brake pads with stainless steel backing plates for consistent friction performance and reduced corrosion at the backing plate.

Can this assembly be used to upgrade an older G4 caliper setup? Yes. The G5 caliper used in the K71-G00-43 assembly replaces the earlier G4 caliper and comes with lifetime pads, making it suitable as an upgrade kit for trailers originally equipped with G4 calipers.

Are the bearings and seals already installed on this brake kit? Yes, the K71-G00-43 ships with precision bearings, seals, and grease factory installed, so no separate bearing pack-out is required before mounting.

What corrosion protection does this brake assembly have? The hub on the K71-G00-43 has a GalvX coating and the mounting bracket is galvanized, both intended to resist corrosion in trailer and boat ramp environments.

What is the piston material in the caliper? The single piston aluminum caliper on the K71-G00-43 uses a patented bimetal aluminum and stainless steel piston, riding on oil impregnated bronze bushings.

How much does the Dexter K71-G00-43 disc brake assembly weigh? This assembly weighs 30 pounds as packaged.

What are the slider pins made of on this brake assembly? The K71-G00-43 uses stainless steel slider pins that are factory pre-installed in the caliper.

Is this brake assembly for the front or rear of the trailer? The K71-G00-43 disc brake assembly is designated for the rear position.

What are the package dimensions for this brake kit? The K71-G00-43 ships in a package measuring 13.8 inches by 12.3 inches by 6.3 inches.