In short, when your vehicle brakes are applied, the Surge Actuator compresses because of the forward "surge" created, which applies pressure to the hydraulic fluid, forcing it through the brake lines to the calipers, which compress on the brake rotors, and slow down your trailer. This process is extremely effective, and the most efficient way to have brakes on your boat trailer. This system will outfit Leaf Spring Axles and Torsion Axles.
What makes this kit we have put together so unique, are the components included. We have included a Disc Brake Surge Actuator, Stainless Steel Mounting Bolts, DOT Rated Flexible Brake Hoses, and Kodiak Brand Disc Brakes.
This Disc Brake kit is for 3500 lb trailer axles with a 4 Hole standard brake flange mounted to the axle. If your axle does not have this brake flange, you will not be able to mount brakes to your trailers axle. A standard 3500 lb Axle uses 1 3/8" x 1 1/16" Wheel bearings, and a 1.712" Grease Seal, we include the wheel bearings and grease seals in this kit as well.
From Front to Back Whats included:
Disc Brake Actuator, 7000 lb Capacity Demco DA70 Disc Brake Surge Actuator with Reverse Lockout Solenoid Pre-Installed and Protective Shield that uses a 2" Towing Ball and mounts to a 3 inch wide trailer tongue.
We have included (2) 1/2 inch x 4 1/2 inch Stainless Steel Mounting Bolts with Hardware for bolting your Surge Actuator to your Boat Trailers 3 inch wide trailer tongue.
Brand DOT Rated Tandem Axle Brake Line Kit with 20 ft Main Line to connect to the Reverse Lockout Solenoid, Brass Cross Fitting for First Axle, Brass T Fitting for Second Axle, (2) 18" Trailer Brake Hoses to Calipers, (2) 6 ft 8 in Trailer Brake Hoses to Go Across Axles to opposing Calipers, 3.5ft Trailer Brake Hose to Connect to Second Axle, (15) Push Mount Screw in Cable Ties, and (15) Standard Cable Ties.
Two Kodiak Integral All Dacromet Kodiak 5 Lug Disc Brake Kits complete with (4) Caliper Brackets, (16) Stainless Steel Caliper Bracket Mounting Bolts, (4) Kodiak Dacroment 225 Calipers with Brake Pads and Stainless Steel Caliper Bolts, (4) Dacromet Integral Disc Brake Rotors 5 Lug (5 on 4 1/2 pattern which is standard) with 3500 lb Wheel Bearing Kits and Grease Seals.
Wheel Bearing Kits use #68149 and #44649 Wheel Bearings, 1 3/8" x 1 1/16" Inner Diameter.
Also included are (4) 1.98" Zinc Plated Accu Lube Style Dust Caps, and (20) Zinc Plated Standard 1/2 - 20 Lug Nuts.
We have included an image of the Brake Hose Layout in Picture form with this listing, which is very simple and effective.
We additionally offer as add on options, Lucas Marine Wheel Bearing Grease, DOT 3 Heavy Duty Hydraulic Brake Fluid, and a 5 Flat Trailer Plug if you are needing these items to complete your installation. These are not included, as you may have them already in your trailer parts arsenal, but if you are needing them, simply click the checkbox, and they will be added to your order.